From Wikipedia, the free encyclopedia

In the United States, a Physician Assistant (PA) is a health care professional licensed to practice medicine with the supervision of a licensed physician (either an M.D. or D.O.) [1]

PAs are not to be confused with medical assistants, who perform administrative and clinical tasks in hospitals and clinics under the direct supervision of physicians, registered nurses, or nurse practitioners.

Contents 1 History of the profession 2 Education and certification 3 Scope of practice 4 Employment 5 PAs in the U.S. Armed Forces and Uniformed Services 6 International use of PAs 7 External links

The PA profession came into existence in the mid-1960s due to the shortage and uneven geographic distribution of primary care physicians in the United States. Dr. Eugene Stead of the Duke University Medical Center in North Carolina assembled the first class of PAs in 1965, composed of former U.S. Navy hospital corpsmen and U.S. Army combat medics, who had received considerable medical training during their military service and gained valuable experience during the Vietnam War. He based the curriculum of the PA program in part on his first-hand knowledge of the fast-track training of medical doctors during World War II.

The Duke University Medical Center Archives has established the Physician Assistant History Center, dedicated to the study, preservation, and presentation of the history of the PA profession. On February 25, 2006 the North Carolina Academy of Physician Assistants formally opened the Stead Center in Research Triangle Park, North Carolina, in honor of Dr. Stead.

As of September 2007, there were more than 139 PA programs in the United States [2] accredited by the Accreditation Review Commission on Education for the Physician Assistant (ARC-PA). The majority are graduate programs leading to the award of master's degrees in either Physician Assistant Studies (MPAS), Health Science (MHS), or Medical Science (MMS), and require a bachelor's degree and GRE or MCAT scores for entry. Some PA programs are starting to offer a clinical doctorate degree; Doctor of Science Physician Assistant (DScPA), while others still lead to the award of an undergraduate bachelor's or associate's degree [3], but many of these are transitioning to graduate-level training.

The education of a PA is based on the medical school model [4], although unlike medical school which lasts four years, PA training is usually two to three years in duration. It is generalist in approach, consisting of classroom and laboratory instruction in medical and behavioral sciences, such as anatomy, microbiology, pharmacology, pathophysiology, clinical medicine, and physical diagnosis, followed by clinical rotations in internal medicine, family medicine, surgery, pediatrics, obstetrics and gynecology, emergency medicine, and geriatric medicine, as well as elective rotations.

A PA may use the post-nominal initials "PA", "PA-C", "RPA" or "RPA-C", where the "-C" indicates "Certified" and the "R" indicates "Registered." The "R" designation is unique to a few states, mainly in the Northeast; most PAs use "PA-C". During training, PA students are designated PA-S. The use of "PA-C" is limited only to those PAs currently certified and in compliance with the regulations of the national certifying organization, the National Commission on Certification of Physician Assistants (NCCPA).

A graduate from an accredited PA program must pass the NCCPA-administered Physician Assistant National Certifying Exam (PANCE) before becoming a PA-C; this certification is required for licensure in all states. In addition, a PA must earn and log 100 Continuing Medical Education (CME) hours and reregister his or her certificate with the NCCPA every two years. Every six years, a PA must also recertify by successfully completing either the Physician Assistant National Recertifying Examination (PANRE) or Pathway II exams [5]

PAs obtain medical histories and perform examinations and procedures, order treatments, diagnose illnesses, prescribe medication, interpret diagnostic tests, refer patients to specialists when appropriate and first assist in surgery. PAs may practice in any medical or surgical specialty, and have the ability to move to different medical and surgical fields during their careers.

PAs are licensed to practice medicine with physician supervision, which may be either in person, by telecommunication system or other reliable means. The physician supervision, in most cases, need not be direct or on-site, and many PAs practice in remote or underserved areas in satellite clinics. Their scope of practice and autonomy are only limited by their supervising physician's scope of practice, physician's comfort level and the PA's clinical experience.

All states, as well as the District of Columbia, Guam, the United States Virgin Islands, and the Commonwealth of the Northern Mariana Islands have laws or regulations authorizing physician assistants to practice medicine. PAs can also prescribe medications in all of these locations [6], but those who prescribe controlled medications in their scope of practice must also have a DEA number.

According to the American Academy of Physician Assistants (AAPA), there were about 63,609 certified PAs in clinical practice as of January 2007.[7]

In the 2007 AAPA census, just over 56 percent of responding PAs worked in the offices and clinics of physicians, either allopathic or osteopathic. About 23 percent were employed by hospitals. The rest were mostly in public health clinics, nursing homes, schools, prisons, home health care agencies, and the United States Department of Veterans Affairs. Approximately 9 percent of responding PAs provide health care to rural communities and those with fewer than 20,000 residents, in which physicians may be in limited supply.

The U.S. Department of Labor Bureau of Labor Statistics report on PAs states, "...Employment of physician assistants is expected to grow much faster than average for all occupations through the year 2014, ranking among the fastest growing occupations..." This is due to several factors, including an expanding health care industry, an aging baby-boomer population, concerns for cost containment, and newly-implemented restrictions to shorten physician resident work hours. Also according to the BLS, the PA profession is the fourth fastest-growing occupation in the U.S.

Money Magazine, in conjunction with Salary.com, listed the PA profession as the "fifth best job in America" (May 2006) based on salary and job prospects, with an anticipated 10-year job growth of 49.65% [8]. According to the American Academy of Physician Assistants (AAPA), in 2006 the mean total income for physician assistants working at least 32 hours per week was $.84 [9]. Physician assistants in dermatology or surgical subspecialties can earn $100,000-$200,000, with the mean total income for PAs working at least 32 hours per week in cardiovascular/cardiothoracic surgery listed as $104,681 for 2006 [10].

U.S. Army PAs[11] typically serve as Medical Specialist Corps officers within Army combat or combat support battalions[12] located in the continental US, Alaska, Hawaii and overseas. These include infantry, armor, cavalry, airborne, artillery and (if the PA qualifies) Special Forces units. They serve as the "front line" of Army medicine and along with combat medics are responsible for the total health care of soldiers assigned to their unit, as well as of their family members.

PAs also serve in the Air Force and Navy as clinical practitioners and aviation medicine specialists, as well as in the Coast Guard and Public Health Service. The skills required for these PAs are similar to that of their civilian colleagues, but additional training is provided in specific fields such as advanced casualty care, medical management of chemical injuries, aviation medicine and other specialties [13]. In addition, military PAs are also required to meet the officer commissioning requirements and maintain the professional and physical readiness standards of their respective services.

The PA concept is being explored in Canada, where Canadian military PAs are gaining legislative changes allowing them to work in the civilian world after retirement as "clinical assistants"[14], and in England, where several U.S.-trained PAs are working in a pilot project.[15]

Pilot projects in Scotland[16] and the Netherlands[17], and Australia are also underway.

• American Academy of Physician Assistants (AAPA)
• National Commission on Certification of Physician Assistants (NCCPA)
• Journal of the AAPA (JAAPA)
• Information About PAs and the PA Profession - AAPA website
• Physician Assistant Forum
• ADVANCE for Physician Assistants journal
• Physician Assistant History Center

v • d • e Health science > Medicine > Medical specialties
Surgery	Anesthesiology • Cardiac surgery • Cardiothoracic surgery • General surgery • Neurosurgery • Oral and maxillofacial surgery • Orthopedic surgery (Hand surgery) • Otolaryngology (ENT) • Pediatric surgery • Plastic surgery • Surgical oncology • Thoracic surgery • Transplant surgery • Trauma surgery • Vascular surgery
Internal medicine	Cardiology • Endocrinology • Gastroenterology • Hematology • Hepatology • Infectious diseases • Intensive care medicine • Nephrology • Oncology • Proctology • Pulmonology • Rheumatology • Urology
Diagnostic	Clinical laboratory sciences (Cellular pathology, Clinical chemistry, Hematology, Clinical microbiology, Clinical immunology, Transfusion medicine) • Radiology (Interventional radiology, Nuclear Medicine) • Pathology (Anatomical, Clinical) • Clinical neurophysiology
Other specialties	Allergy and immunology • Dermatology • Disaster medicine • Emergency medicine • General practice • Geriatrics • Infectious disease • Neurology • Obstetrics and Gynaecology (Fertility medicine, Reproductive medicine) • Occupational medicine • Ophthalmology • Palliative care • Pediatrics • Physical medicine and rehabilitation (Physiatry) • Preventive medicine • Psychiatry •
Interdisciplinary	Allopathic medicine • Epidemiology • Hospital medicine • Medical genetics • Osteopathic medicine • Pharmacy • Physician (M.D. and D.O.) • Physician Assistant • Public health • Sports medicine