Wednesday, 11 January 2012

Telemedicine: A Part of Medical Team


The convergence of information and communication technologies (ICT) for improving health system through telemedicine addresses both changes in the access of healthcare information and services as well as wider dissemination of healthcare related skills and specialist expertise into community, into home and ultimately the individuals. The use of the internet and high-tech communications in health care has led to new approaches to medical treatment and to challenging legal questions. The health care providers, hospitals, pharmaceutical companies, insurers and their legal counsels are exchanging medical information through web-portal access using telemedicine. The application of telemedicine in health system improvement can be classified as the use of e-health in the provision of health services at a distance (tele-health), management of clinical and administrative information (health informatics), and sharing information with health care providers, patients, and communities (e-learning). Proven benefits of telemedicine include improved access to care, enhanced quality of services, and reduced costs of care for patients and health care systems. However, use of telemedicine within or between institutions involves a number of factors that require appropriate planning. Many of these issues cannot be addressed without the support of well-defined policies, rules, standards, or guidelines at the institutional, jurisdictional, and global levels. It is important for the planners of telemedicine at different levels to develop policies that could facilitate the adoption of telemedicine and prove its success through improvement in services and change in public health status.
Doctors have recently gained extensive knowledge of using telemedicine applications for consultations, education and training, and conferences. What is still lacking is systematic evaluation of these new approaches compared with traditional measures. Trials involving consultations for diagnostic, monitoring, and interpretative purposes should be blinded and multicentred, and should include tests of patients satisfaction as well as macro-economic considerations. The quality of educational programmes and conferences should be documented and compared with traditional teaching methods. International standards need to be developed for such evaluations, to allow valuation between trials performed at national and international levels. Pakistan is in a good position to contribute to these developments because of a well-integrated health care system and excellent telecommunication facilities. Through telemedicine, Pakistan possibly will resume a leading global position in the use of advanced information technology. There are still significant gaps in the evidence base between where telemedicine is used and where its use is supported by high-quality evidence. Further well-designed and targeted research that provides high-quality data will provide a strong contribution to understanding how best to deploy technological resources in health care. The identification of a number of critical requirements for the successful implementation of ICT projects and programs in the health sector of developing countries includes:

  1. purpose, strategies, and scope of services to be provided;
  2. audiences, customers, and users (targeted populations);
  3. value of health and healthcare to the individual and community;
  4. current ways to assess individual and collective health problems (community health);
  5. needs of the individual, community, and nation;
  6. institutional user needs and commitments; and
  7. competencies of the organization implementing or hosting the ICT system. 
ICT have clearly made an impact on health care, includes:
  • improved dissemination of public health information and facilitated public discourse and dialogue around major public health threats; 
  • enable remote consultation, diagnosis and treatment through telemedicine;
  • facilitate collaboration and cooperation, among health workers, including sharing of learning and training approaches;
  • support more effective health research and the dissemination and access to research findings;
  • strengthened the ability to monitor the incidence of public health threats and respond in a more timely and effective manner; and
  • improve the efficiency of administrative systems in health care facilities.

Telemedicine now has the potential to make a difference in the lives of sick people. Depending upon the level of technology employed, telemedicine can reduce professional isolation of the rural primary practitioner in several ways. For instance, two-way interactive video consultation with specialists links the isolated practitioner with the specialist community of a large medical care. This virtual support system and contact with professional colleagues should enhance the integration of the rural or otherwise isolated practitioner. However, it must be noted that these contacts are only temporary, will occur only sporadically, and depend on the level of telemedicine technology employed. Therefore, the extent of the integrative possibility of telemedicine remains to be determined. The technology also has the potential to link the primary practitioner with on-line services which provides the opportunity to review the latest medical literature, thereby strengthening links to the professional medical community and improving the quality of care for the rural patient.

Wednesday, 7 December 2011

ADVANCING HEALTH-CARE SYSTEM PERFOMANCE WITH GEOINFORMATICS


Abstract:
Health-care systems represent hearty and demanding information environment that requires comprehensive infrastructure capable of addressing inadequacies in existing systems. Although several modern geo-technologies have been available for over three decades, most health-care systems and public health agencies have incorporated only a limited number of these innovative technologies into their routine practices. Understanding geo-informatics capabilities in health-care industry as a decision support system in responding to health-care challenges associated with assessment, assurance, and policy development is needed. Geographic information systems (GIS) and analyses based on GIS have become widespread and well accepted. GIS is not the complete solution to understanding the distribution of disease and the problems of public health but is an important way in which to better illuminate how humans interact with their environment to create or deter health.

Keywords: Health-care system, Public health, Geo-technologies, Geographic information system (GIS)


Introduction:
Geography is important in understanding the dynamics of health causes and spread of diseases. Any attempt to advance quality improvement in health-care requires geospatial consideration and implementation of geo-informatics science and technology system (GIS), global positioning system (GPS), and remote sensing applications. Recent progress in geo-technologies has intensified the need for evidence-based spatial decision support systems (SDSS) in health-care practices. A GIS integrates data from multiple sources, providing the ability to analyze and visualize how data relates over space and time. The use of GIS requires the creation of geospatial database, appropriate hardware and software acquired, applications developed, and all components installed, integrated and tasted before users can use it. This paper provides a snapshot of the benefits of GIS and related technologies and how they possibly use in health-care systems.

Geo-informatics in health care:
Health geo-informatics combines spatial analysis and modeling, development of geo-databases, information systems design, human-computer interaction and networking technologies to understand the relationship between people, environments, and health effects. GIS provides the opportunity of linking databases to maps, creating visual representation of statistical data, and analyzing how location influences features and health events on the earth’s surface.
Within the last decade, the world has experienced some catastrophic events that clearly provide evidence of the importance of state-of-art health information system (HIS). Compared with other public services as natural resource, urban planning and transportation, it is evident that the full capacity of GIS in health-care management has not been fully explored. There is limited evidence that GIS are being formally considered or regularly used in strategic decision-making in any major health-care planning system. Several initiatives that advocate the inclusion of GIS operations at different stages of health-care planning and management have been noticed. In 2003, GIS was recognized as an emerging information technology that can be used to enhance the ability to prepare for and respond to public health emergencies. Several organizations including the WHO are committed to support countries in the adaptation and integration of GIS within their respective health-care programmes. Successful adoption of GIS by health-care managers and policy-makers depends on understanding the spatial behaviors of health-care providers and consumers in the rapidly changing health-care landscape and how geographic information affects these dynamic relationships.

Geo-informatics in Emergency Response:
In most cases, linking emergency resources with victims creates a geo-logistical challenge. To address this challenge, an integrated Advanced Emergency Geographic Information System (AEGIS) can be developed and accessed anywhere. AEGIS allows all emergency resources to be fully coordinated as a web-based situational awareness system for use in all emergency medical services. AEGIS monitors and maps the location and status of emergencies, locates victims and emergency response personnel, and tracks other factors such as prevailing weather conditions that can impact emergency response on a real-time basis. AEGIS overlays traffic congestion and accidents on freeways to plot the fastest routes to area trauma centers. All authorized emergency responders can access AEGIS via the Web or by using a basic cell phone or in-vehicle unit.

GIS provides high quality patient care management:
Ensuring delivery of high quality care requires care givers to have the necessary accurate and timely information and the ability to visualize them at their fingertips. Hospitals that have developed patient/bed management systems that operate during non-surge periods are in a better position to provide critical information to local incident management during unanticipated disaster surges. This system facilitates capturing of vast array of information of patients’ admittance, switching rooms, discharge, and moving from in-hospital to outpatient care. On a broader scale, linking hospitals in local, statewide and multi-state systems will enable health-care capacity and the ability to adequately prepare and respond to mass-casualty events and other regional public health emergencies.

Defining suitable locations for health-care services:
Access to health care is a significant factor that contributes to a healthy population. Accessibility and utilization of health care depends largely on having the appropriate health-care resources in the right place at the right time. GIS has been used in a number of situations to estimate the optimal location for a new clinic or hospital to minimize distances potential patients need to travel taking into account existing facilities, transport provision, hourly variations in traffic volumes and population density. GIS applications demonstrate sophisticated use of health information to enhance facility utilization, improve distribution of preventive and curative care, and provide evidence-based rationale for targeted assistance and service delivery.

Resources required implementing a GIS:
Developing a GIS requires investment in computer hardware, GIS software, networking environment, data procedures, and trained staff. Staffing for a GIS programme is critical as it is not easily feasible to directly expand the local health-care staff positions to fill the GIS need. Areas where expertise is needed include GIS project management, GIS database skills, and application development. Training of the health-care workforce in general computing, database principles, and GIS are essential for increasing efficiency of use.


Conclusion:
Several dimensions of health and human services can benefit from the adoption of geo-informatics as a way of improving health and be in a better position to prevent and respond to public health emergencies. There is a need for health care systems to create new types of information that are both clinically relevant as well as place and time sensitive in response to large scale emergencies. When appropriately implemented, GIS could potentially act as a powerful evidence-based practice tool for early problem detection and solving while modifying clinically and cost-effective actions in predicting outcomes, and continually monitor and analyze changes in health-care practices.

Reference:


  • Ricketts TC. 1994. Geographic Methods for Health Services Research: A Focus on the Rural-Urban Continuum. Lanham, MD: Univ. Press Am. 375 pp.

  • Higgs G, Gould M: Is there a role for GIS in the new NHS? Health Place 2001, 7(3): 247-59.

  • Jenks RH, Malecki JM, 2004. GIS – a proven tool for public health analysis. J Environ. Health, 67(3), 32-34.

  • Rushton G, Elmes G, McMater R. 2000. Considerations for improving geographic information research in public health. URISA J. 12(2): 31-49.

Sunday, 30 October 2011

Medical Image Acquisition: Static to Digital World

Overview:
Early radiology was embedded in morphology, namely skeletal morphology. The change towards image of physiology of the human body began with nuclear medicine. With this transformation approach the ability to not only display presence of diseases but also the mechanism of disease and the biology of treatment. In the midst of the excitement brought about by the Roentgen’s discovery, Becquerel discovered radioactivity in the early 1896. Thus began the dawn of the nuclear age. Similar to the discovery of x-rays, the discovery of phosphorescence was accidental. Becquerel had placed some photographic plates in a drawer with some crystals of uranium. Upon retrieving the plates, he found that the plates had been exposed. He deduced that exposure must have been from rays of a radioactive source i.e; the uranium crystals. Over the years numerous scientists such as the Curies and Rutherford had contribute to the advancement of nuclear medicine. The use of single-photon emission computed tomography (SPECT) and to a greater extent positron emission tomography (PET) to display functional abnormalities not detected by other imaging tools have made assessment of treatment feasible.


Background:
In the early years, radiographs were initially made onto glass photographic plates which were coated with emulsion only on one side. In 1918, Eastman introduced film coated with emulsion on two surfaces. Radiograph at this time was focused on imaging of extremities, mainly to detect fractures and to localize position of bullets. This was due to fact that bone, soft tissue and dense foreign bodies provided the only contrast between materials. In 1910, orally administered contrast medium (bismuth nitrate later replaced by barium sulphate) was used to image the gastrointestinal system. Further development brought about an intravenous contrast agent marketed for urinary tract radiograph in 1927.
The next development involved the use of fluorescent screen, an x-ray tube, and x-ray table and red goggles and required the radiologist to stare directly into the screen so that x-ray images could be displayed in real time. This was a rather primitive method as the fluorescence emitted was very dim. The first iodine-based contrast arteriogram in a patient was reported in 1929 by Dos Santos, approximately 34 years after the discovery of x-ray. However without the benefit of the image intensifiers at this time, arterial access was obtained via a blind tranlumbar puncture. The emergence of image intensifiers gave a much-needed boost to this flagging enterprise. Greater steps were taken when Seldinger introduced a safer, simpler and more effective method of accessing the femoral artery. Despite the advent of the Seldinger technique, real advances in diagnostic angiography were still stunted, as fluoroscopy remains primitive. In the late 1980’s and early 1990’s however, two essential technologies have greatly impacted the evolution of angiography; moveable multiple-angle C-arm fluoroscopy and digital image acquisition.

The Power of Three:
By the 1970’s ultrasound (US) and computed tomography (CT) had arrived displacing angiography as the supreme imaging tool in radiology. By the 1990’s duplex ultrasound, CT angiography and Magnetic Resonance (MR) angiography began to replace diagnostic arteriography for the direct study of vascular pathology. In most radiology departments today, catheter-based angiography is reserved mainly for diagnosis of atherosclerotic vessels and as an adjunct to interventional procedure. Early imaging studies were projections of 3-Dimensional (3D) body parts displayed as if a steamroller as in our favorite cartoons had flattened the human body. This results in much overlap of the body parts making interpretation of disease difficult. The emergence of three powerhouses imaging tools namely ultrasound, computed tomography and magnetic resonance imaging have revolutionized the care of patients across the continuum of medicine and surgery. Radiology is now often referred to as ‘imaging’ reflecting the fact that it is no longer dependant on x-rays alone. Over the years, ultrasound has stood the test of time proving to be a safe, reliable, portable and cheap imaging modality. In 1972 the cross-sectional imaging became a catch phrase; this was attributed to the invention of computed tomography (also known as computed axial tomography or CT scan). The earliest CT scanners were limited to imaging of the head, by 1976 the technology had evolved to whole body scanners, and by the 1980’s CT Scans had gained worldwide acceptance. Today there are an estimated 600,000 locations around the world where this diagnostic tool is in use. The prototype CT Scanners took roughly four minutes of lapsed time to acquire a single image. Currently, modern units produce images in less than 0.5 seconds. The advent of CT had an enormous effect on our ability to ‘SEE’ inside the body and immediately changed the practice of medicine; the momentum created by CT scanners fueled the commercial development of MRI systems. In its infancy, many thought that MRI would have a limited impact because of its high cost, the technical difficulties associated with it and the belief the CT scanning was a superior method of imaging. MRI has quickly become the primary imaging method for brain and spine imaging as well as functional imaging of the heart.

Inflowing the Digital World:
Computers and the digital world have impacted the science of Radiology bringing it to what it is today. The advancement of artificial intelligence in the last 25 years has created an explosion of diagnostic imaging technique. These techniques have now been developed for digital rather than photographic recording of conventional radiographs. In the early days, a head x-ray would require up to 11 minutes of exposure time but now digital radiographic images are made in milliseconds while reducing the radiation dose to as little as 2% of what was used for the 11 minutes head examination 10 years ago.
The resolution achievable by the different imaging methods may be classified as spatial, contrast or temporal. Spatial resolution is the ability of a system to resolved anatomic detail. Contrast resolution is the ability of the system to differentiate different tissue especially to distinguished normal from pathological tissue. Temporal resolution is the ability of the modality to reflect either changing physiological events such as cardiac motion or disease remission or progression as a function of time. Each imaging modality has its strength and weaknesses much to frustration of hospital administrators no single method will solve all diagnostic problems and the fusion of knowledge gleaned from different modalities would serve our patient best.

Sunday, 18 September 2011

Ionizing Radiation in Medical Diagnosis and Treatment

Overview:
“The dose makes the poison,” Paracelsus said some 500 years ago. Paracelsus was a 16th century Renaissance physician who is often credited as the father of toxicology. A doctor’s duty is to diagnose and treat but, if mishandled; the treatment can often do as much damage as the disease. Nowhere is this truer than in the field of ionizing radiation, particularly in medical procedures that use of x-rays, as in computed tomography (CT) scans, or in interventional procedures such as cardiac catheterization for angioplasty. What happens if a patient receives a very high dose of radiation during a radiological procedure? There are two general types of risks he/she might face the first one is readily visible and the symptoms can come relatively early, such as skin reddening, or erythematic and hair loss. The second effect might manifest itself slowly and take years to appear, such as an increased risk of cancer. Radiation effects on skin have been reported primarily in patients undergoing interventional procedures such as angioplasty. This may happen in 1 in 10,000 cases and are not possible in simple examinations such as plain x-rays of chest or any part of the body. Some skin injuries in computed tomography (CT) examinations have only recently been reported and again are rare. With this, the main concern is a long-term risk of cancer.
  
Background:
The use of ionizing radiation has transformed medicine in the last 100 years. Many of the discoveries that advanced our understanding of human anatomy and function happened in the last few years of the nineteenth century. The invention of x-rays by C.W. Roentgen1 in 1895 was an impressive discovery followed by the discovery of radioactivity by H. Becquerel, who noted in 1896 that uranium was emitting radiation without the need of exposure to sunlight. In 1898, Marie S. Curie announced the discovery of radium, which is more radioactive than uranium2. Curie was instrumental in ensuring that her discovery found applications in helping others, for example, equipping mobile radiography units often referred to as petite Curies. Curies died in 1934 from plastic anemia, a disease most likely due to her lifelong exposure to ionizing radiation.
Nowadays, ionization radiation is used in medicine for two main purposes:

  • Diagnostics
  • Therapy
Diagnostics:
The largest source of man-made radiation exposures to humans stems from diagnostic procedures. These can be broadly divided into radiology and nuclear medicine. In radiology, an external radiation source is used to generate photons (typically x-rays) of sufficient energy to penetrate human tissues. A detector system at the exit site of the beam determines the transmitted photons, which provide a projection image of all structure in the body. This information can be used as a single projection image (radiograph), for example, chest x-rays. The fluoroscopic imaging allows the clinician to follow anatomical movement (e.g. breathing), surgical interventions (e.g. fluoroscopy-guided biopsy), or search for structures in the patient by moving the imaging apparatus. Finally, multiple projection images of the same anatomy can be acquired from different directions and a computer used to reconstruct three-dimensional information, this process called computed tomography (CT), is usually done in several sections to reduce the influence of scatter in the reconstructed image.
In nuclear medicine, a radioactive isotope, most commonly 99m-technetium is administered to the patient. The isotope is used to label a substance of interest that will follow a physiological pathway of interest. As such, nuclear medicine provides information about not just anatomical features in the patient but also metabolic activity and physiological pathway. The emitted radiation can be detected from outside the patient using mostly gamma cameras, sophisticated arrangements of collimator and detector systems that allow determination of the location of the isotope.

Therapy:
Most uses of radiation for therapy are concerned with cancer treatment. In cancer treatment, radiotherapy aims to deliver a very high dose to the tumor while trying to minimize the dose to surrounding normal tissues. There are two possible ways to deliver radiotherapy:

  1. External beam radiotherapy where the radiation is directed to the cancer from outside of the patient’s body. As the distance of the radiation source is typically of the order of a matter, this type of therapy is also sometimes referred as tele-therapy.

  1. Brachytherapy (brachys is Greek for “close by”, “near”) is the use of radioactive isotope brought into close contact with the tumor to deliver the radiation.

The Radiation Warning Sign:
Radiation is a natural part of our lives. Visible light is the most common type of radiation that we use for seeing things every day. There are also forms of invisible radiation in our environment that come to us from outer space and from the small amount of natural radioactive substances that are in the earth, the air we breathe, the water we drink, the food we eat, as well as in our own bodies. Whereas, ionizing radiation cannot be seen, heard, smelled by humans. However, as radiation is considered a hazard, it is important to make people aware of its presence. The internationally recognized symbol indicating radiation hazards is the black trefoil on a yellow background. (This is shown in figure 1).



External and Internal Exposure:
“The International Commission on Radiological Protection, ICRP, is an independent Registered Charity, established to advance for the public benefit the science of radiological protection, in particular by providing recommendations and guidance on all aspects of protection against ionizing radiation.” (www.icrp.org) 3

Hazards from ionizing radiation can broadly be divided in two groups:
External exposure: Radiation reaches a person from outside through the skin is typically from a radiation source that can be turned off like an x-ray unit. The radiation from this source may cause damage in an organism while it is turned on. In the case of external exposure, nothing radioactive left in the body. Hazards of this type may occur in radiology or radiotherapy departments.

Internal exposure: This occurs most commonly after the incorporation (e.g. breathing in, consuming with food, absorbing through the skin) if radioactive isotopes. The radioactivity remains in the organism until the isotope has decayed or until it is excreted. These hazards may be present in nuclear medicine departments, research laboratories or in hospital environment. If you, a loved one or someone you know need to undergo x-ray examination here are some suggestions:
  1. Try and fine out if the health facility has a program for quality assurance and certification in which the patient-doses are comparable with international standards;
  2. Never refuse a needed examination. Despite the risks associated with x-rays, you should beat in mind that the benefits of x-ray examinations outweigh the risks. What is most important is that the examination should have been duly justified by the doctor for you;
  3. Do not expect the health-care providers to give information on the exact figure of the radiation dose. It is important to know that there is no internationally prescribed “upper limit” for a radiation dose; and
  4. Carry records of all previous radiological examinations.





References:

  1. Kron, T., Wilhelm Conrad Rontgen, Australas. Phys. Eng. Sci. Med., 18, 121-23, 1995.
  2. Macklis, R.M., Portrait of science. Scientist, technologist, proto-feminist, superstar, Science, 295, 1647-48, 2002.
  3. http://www.icrp.org/

Saturday, 3 September 2011

Organ Donation the Gift of Life


Overview:
“Human organ can either be donated as free (gift) or sold by the donor. The organ could be accepted/purchased directly by a patient/ his relatives or “through a third party”. Selling of human organ has enormous ethical, socio-cultural and religious implications and is prohibited in majority of countries of the world. It is banned in US and most of the European countries. The Islamic religious scholars also disapprove this practice of selling human organ. The organ donation is based on three Islamic principles i.e. beneficence, gift (donation) and usefulness and sustenance of human life”.

Background:
Organ transplantation is the established treatment for the failure of vital organ such as the kidney, pancreas, liver, heart or lung. Kidneys are by far the most common type of organ transplant. Future demand for organ transplants is likely to increase due to the rapid rise in some diseases, such as diabetes and hepatitis C, together with an ageing population.
Organ transplantation is the therapeutic use of human organs involving the substitution of a non-functional organ for another one coming from a donor. Clinical organ transplantation began in the mid 1950s with kidney transplantation procedures between twins. Simultaneously with kidney transplantation, the first heart (1967) and the liver (1979) transplantation were performed. The use of human organs for transplantation has steadily increased during the past decades. Organ transplantation is now the most cost-effective treatment for end-stage renal failure, and for end-stage failure of organs such as liver, lung and heart, it is the only available treatment. An organ transplant is lifesaving and is in most cases the only available treatment.

Who Can Be a Donor?

Organ donation takes healthy organ and tissues from one person for transplantation into another, in order to replace diseased and non-functioning organ. Organ/tissue, which is suitable for transplant, includes heart, kidney, lungs, liver, pancreas, skin and bone. Most donated organ come from people who die while on life support, following a severe brain injury. Brain death, unlike a coma, is the complete and irreversible cessation of all brain function. Brain death usually occurs when a person receives a severe head injury, suffers stoke or a brain hemorrhages or any other event which deprives the brain of oxygen. In some countries organs are also taken from non-heart-beating donors (NHBDs). NHBDs are patients who have died from cardiac death i.e. irreversible loss of heart and lung function.

Donor Selection:
Organ recipients can not be selected by the donor but are selected based on medical need and tissue compatibility. However, there is currently a debate regarding whether donors should be allowed to direct their organs to a specific recipient. Opponents argue that allowing donors to select recipients would lead to the discrimination of person on the basis of race, gender or religion; opponents also invoke the principle of justice which supports an equal distribution of life-saving resources independent of characteristics, such as race etc. Living organ donation involves in organ or part of an organ being taken from a healthy living person (known as a living donor) and transplanted into a person with organ failure. Typically a living donor is related to the person awaiting a transplant e.g. sibling or parent. This is mainly because someone who is closely related will have a better chance of being a good tissue match. Some countries allow un-related living donation, whereby friends, colleagues and even strangers are allowed to donate an organ for transplant. Living donors can only donate those organs or tissues, which they can live a healthy lifestyle without. These include a kidney, a lung, and a part of liver, blood or bone marrow.


Thursday, 25 August 2011

Administrative and Managerial Functions for Health Care Improvement



Overview:
The current scenario of health care visualizes preventive and curative health. The Government is trying its best to improve the primary health care. Rapid steps have been made to improve the quality of curative health care services to the people. The health care provides a three-tier system- the dispensaries of the primary health centers, the hospitals managed by the Government of the local authorities like corporations and hospitals managed by corporate organizations, and then tertiary care centers including the medical colleges.

Background:
As we prepare ourselves to enter the 21st century, the organization and management of health services and hospitals will also have to change rapidly in tune with the advanced technological innovations. Organizational strength of any institution will depend on the achievement of the required output of its managers and professionals, such organizations which are endowed with organizational potency would be able to help the nation to achieve the desired health care goals. It is therefore very necessary that each and every expert in the organization should be equipped with the knowledge of the managerial functions. The drift from compassion and care to a shift towards technology and technical competence in the field of medical care has necessitated reshaping of hospital services.
Hospitals are expensive to build and equip and equally expensive to maintain. With the shift towards newer diagnostic and treatment technologies, hospitals need a sizeable investment in resources and their careful management. The challenge lies in effective planning and implementation, efficient utilization to limited resources and providing medical care.
“Medical care is a program of services that should make available to the individual, and thereby to the community, all facilities of medical and allied services necessary to promote and maintain health of mind and body. This program should take into account the physical, social and family environment, with the view to the prevention of disease, the restoration of health and alleviation of disability”. (WHO, 1959)
“A Hospital is an integral of social and medical organization, the function of which is to provide for the population complete health care, both curative and preventive, and whose outpatient services reach out to the family and its home environment; the hospital is also a centre for the training of health workers and bio-social research”.(WHO definition of Hospital)

Eight essential elements of Primary Health Care as described by the WHO are as fellows:
  1. Adequate nutrition.
  2. Safe and adequate water supply.
  3. Safe waste disposal.
  4. Maternal and child health and family planning services.
  5. Prevention and control of locally endemic deceases.
  6. Diagnosis and treatment of common diseases.
  7. Provision of adequate drugs and supplies.
  8. Health education.
Hospital viewed as a system:
A hospital can be variously described as a factory, an office building, a hotel, an eating establishment, a medical care agency, a social service institution and a business institution. In fact it is all of these in one, and more. Sometimes it is run by business means but not necessarily for business ends. This complex character of the hospital has fascinated social scientists as well as lay people.
Management science defines a system as “a collection of component subsystem which, operating together, perform a set operation in accomplishment of defined objectives”. Sociologists have considered hospital as a social system based on bureaucracy, hierarchy and super ordination subordination. A hospital manifests characteristics of a bureaucratic organization with dual lines of authority, viz. Administrative and professional.
There is an ongoing race between the medical resources and increasing population. Even though there has been a tremendous growth in the medical resources, they have not been able to cope up with increasing demand due to unchecked growth of population. From its gradual evolution through the 18th and 19th centuries, the hospital both in the eastern and the western world-has come of age only recently during the past 50 years or so.

Effective Hospital Management:
Management has been defined in many ways by many authorities, but the original definition by Henri Fayol, considered the father of modern management, “To manage is to forecast and plan, to organize, to co-ordinate and to control”. The task of the management of any enterprise incorporates:

  • Determining the goal and objectives of the enterprise.
  • Acquisition and utilization of resources.
  • Instituting communication systems.
  • Determining control procedures.
  • Evaluating the performance of the enterprise.

Administrative Services:
The terms “Administration” and “Management” have often been interchangeably used. Some people have tried to define administration and management as two distinct entities. To them, administration seems to indicate some higher and broader function than managing. They continue to distinguish is about. But management is not an academic discipline alone. It is a practical art and a science, calling for development of knowledge, skills and attitudes. Managing and administration make use of organized knowledge, i.e. the management science.

Roles and Functions:
The following is a description of the various roles and functions of the hospitals administrator, and activities associated with them. Description of each function of role leads to key element under that role.

Working with People:
The administrator has no direct clinical responsibility for any patient, which rests firmly on the members of the medical staff who have the clinical freedom of decide who shell be treated for what, by what means and for how long. Because doctors are responsible in this way, they are in unique position to influence the work and development of the hospital. The physician’s management of a case has an effect far beyond the clinic or ward situation, on the work of the other staff, and in the functioning of other departments remote from his sphere of action.

The Enabling Role:
One of the prime roles of the administrator is to enable the doctors, nurses and patient-care team to do their job. He “enable” “sees” to and “ensures”. All this is part of his enabling job, but not the whole of it. He must concern himself also with creating and maintaining the nonmaterial conditions in which the professional staff can do their work best-morale, atmosphere.

Staff Motivation:
Expensive facilities and equipment do not necessarily make for a good hospital; it is the people who operate them that make the hospital go. This function is one of the most challenging functions of a hospital administrator. The staff needs to be motivated to give their best at all times even in trying situations. Many discouraging factors and stress situations, in which hospitals abound, tend easily to lead to erosion in motivation.

Management of Resources:
All decision making is limited by the human and material resources the hospitals has. The variety and quantum of the pressures and constraints on hospital administration is best seen when it comes to deciding between competing claims for manpower and financial resources. How does one compare the need for a new lift to replace a very old one with that for a set of ventilator for the ICU? Or the requirement of two data entry operators for the computer section with extra technician in the laboratory for a new oncology program?

Containing Cost:
Being in-charge of the business side of hospital management, a hospital administrator is responsible for the conduct of all the business aspects. With phenomenal rise in hospital costs, the administrator has to devote considerable time and energy to monitor and contain costs. The medical staff knows very little or nothing about the economics of hospital care. Therefore, it is necessary to make them cost-conscious, to reduce expenditure without jeopardizing patient care. The hospital administrator achieves this through presenting them with different types of costing data, and seeking their cooperation in containing costs. The administrator puts into practice his knowledge and skills in financial management to practical use in forecasting financial results as precisely as possible.

Dealing With New Technology:
Hospital practice has become more and more dependent on high technology which can become rapidly outdated as the technological advance continues.  Medical staffs are subjected to sales pressure from manufacturers of newer items, and they mat tend to seek what is new without regard to cost because of glamour attached with newer sophisticated equipments.

Social Commitment:
The hospital administrator is a part of the society in which the hospital functions. His vision therefore must be restricted to the hospital in isolation. He must be aware that he is a part of the wider health care system and serves the larger society through the hospital.

Skill of Effective Managers:
A question is often asked whether the effective manager in one situation or institution culture can also prove to be effective in another situation or culture. It the skills, qualities and abilities of effective managers are all so very well documenter, are there any differences in these qualities, skills and abilities at various levels of the organization? There are numerous examples of some managers vitalizing a badly run institution with a poor public image to a very successful one. There are also other examples of some successful managers have been removed from important managerial position either on change of ownership of the institution or for their failure to work under a different organizational culture.
After a lot of research, it has now established that successful management rests on three basic skills- technical, human and conceptual. These three skills are not absolute and mutually exclusive but interrelated.

Technical Skill:
Technical skill is the understanding of and proficiency in specific type of activities involving methods, processes or techniques, e.g. those of an engineer or a doctor. It implies specialized knowledge in that trade and proficiency in the use of techniques and tools of the trade, and which can be easily observed and assessed.

Human Skill:
All managers achieve the organizational objectives through the efforts of other in the organization. Human skill is the skill in dealing with people (rather than things or objects). It involves ability and judgment in working with and through people, including an understanding of motivation. This skill is demonstrated in the way the individual perceives his superiors, equals and subordinates, and requires awareness of their attitude, beliefs and feelings. It also involves the ability to effectively communicate with others so as to influence their behavior.

Conceptual Skill:
Conceptual skill involves the ability of understand complexities of the whole organization and how changes in any part of the organization affect others. This knowledge permits the managers to acts according to the objectives of the total organization rather than only on the basis of needs of the problem at hand. The success of decision depends on the conceptual skill of managers who make the decision. The attitude and values of top manager make up an organization personality which distinguishes good organization from others.


Wednesday, 24 August 2011

Engineering Toward the Better Healthcare-Biomedical (BME)


Overview:
The 20th century was an inspirational period for physical and engineering sciences applied to medicine. The seeds for the rapid growth of medical physics and biomedical engineering in healthcare were already sown in the closing decade of the 19th century by three important discoveries: x-rays by Wilhelm Roentgen in Germany in 1895, radioactivity by Henri Becquerel in France in 1896, and the electron by JJ Thompson in England in 1897. As with other aspects of technological development, the basic principles elucidated by physicists were soon turned into practical applications through the skill of engineers. As we enter the 21st century, medical physicists and biomedical engineer continue to play an essential role in delivering modern, effective healthcare in a wide variety of ways. The work of these dedicated health professionals takes place in hospitals, research laboratories, industrial companies, academic institutions, and governmental organizations.

Background:
In modern medicine, technology plays a prominent role in the diagnosis of diseases and treatment of patients. As a consequence, healthcare requires new generations of medical doctors and engineers. Development of medical products requires a close cooperation between doctors and engineers, medical doctors who are familiar with the latest technical developments in their field, and engineers who have knowledge about the human body-anatomy, physiology, pathology, etc. Biomedical engineering (BME) is a multidisciplinary field that spans interdisciplinary boundaries and connects the engineering and physical sciences to the biological sciences and medicine in a multidisciplinary setting, to develop or apply new technologies in patient oriented research and clinical healthcare. The scope of this pretty young field of science covers many different medical applications, varying from the development and application of new medical imaging techniques (MRI, PET, X-ray scanning, etc.) and biochemical test kits for the assessment of organ function, cell function, cell-material interactions, blood-material interactions, to the development of medical devices like orthopedic implants, blood purification devices, mechanical circulatory support systems, etc. In tissue engineering and regenerative medicine, engineering techniques are used to facilitate culturing of cells outside the body or for changing the behavior of cells.

Definition and Nature of the Work:
Biomedical engineers combine their knowledge of biology and medicine with engineering principles and practices to develop devices and procedures that solve medical and health-related problems. That is, biomedical engineers try to answer medical challenges by helping design and develop new equipment or methods. Biomedical engineers help to develop a wide variety of medical instruments and devices. For example, the heart-lung machine takes over the body's job of pumping and oxygenating the blood during surgery. Special lasers are used in delicate eye surgery. Sonar, or sound waves, can be used to measure diseased organs and detect tumors. Tiny radio transmitters that send out signals about changes in body temperature, internal bleeding, and digestion can be worn or swallowed. Biomedical engineers also work to improve equipment, such as artificial limbs, heart valves, and kidney machines. They contribute to the development of such devices as heart pacemakers, which can be implanted in a patient's body to improve the heart's functioning. Many biomedical engineers do research along with physicians, chemists, and other scientists in hospitals and universities. They are involved in the search for answers to questions such as how drugs affect muscle fibers and how the brain thinks, remember, and sleep. Some biomedical engineers work in hospitals where they help maintain and monitor complex medical systems. For example, they work with systems that can inform a hospital physician of the pulse rate, blood pressure, and other vital signs of a heart attack victim in an ambulance mile away.

Opportunities in Biomedical Engineering:
The opportunities in biomedical engineering are expected to increase much faster than the average for all occupations through 2014. The aging population and a focus on health issues will increase demand for better medical devices and equipment designed by biomedical engineers. The job market for biomedical engineering is rapidly growing. According to the U.S. Bureau of Labor Statistics, employment of biomedical engineers is projected to grow more than twice as fast as the overall employment increase in all sectors during the 2004–2014 periods.

Impact on the world:
Biomedical engineering has a huge impact on the world we live in today. There are now a variety of medical devices and machines that can both improve health and save lives, thanks to biomedical engineering. Biomedical engineering is the fusion of engineering expertise with the world of clinical medicine, developing technologies such as laser systems used in corrective eye surgery and systems for analyzing blood. Biomedical engineers play an exciting and critical role at the frontier of technological advances to improve healthcare. They apply engineering expertise and ingenuity to design systems to help prevent, diagnose and treat all types of diseases, injuries and disabilities.