Scope of Practice
Prerequisites to PA programs include two years of college courses in basic and behavioral science, as well as prior experience in healthcare. According to a report generated by the Association of Physician Assistant Programs, most PA students have earned a bachelor’s degree and have an average of 38 months of healthcare experience before being admitted to a PA program.2
The first year of PA education comprises a didactic curriculum with coursework in anatomy, physiology, biochemistry, pharmacology, physical diagnosis, pathophysiology, microbiology, clinical laboratory sciences, behavioral sciences, and medical ethics. In the second year, students receive hands-on clinical training through a series of rotations—typically in family and internal medicine, obstetrics and gynecology, pediatrics, general surgery, emergency medicine, and psychiatry. By the time they graduate (typical PA programs last an average of 26 months), PAs will have completed more than 2,000 hours of supervised clinical practice.
PAs work in all areas of medicine. Although hospital bylaws and state regulations often stipulate the PA’s scope of practice, the major determinant of duties is the supervising physician. The relationship between supervising physician and PA, says Kislingbury, is a collaborative one. Duties are “defined on an individual basis, and they are determined based on our [PAs’] experience, the physicians’ experience with us, and then the nuances of the system and the hospital itself.
“The PA who is hired should know what his or her scope of practice is,” she continues. “By the time they have graduated and obtained their license, they should know what their state allows them to do.”
For instance, according to the American Academy of Physician Assistants, 48 of the 50 states, plus the District of Columbia and [the U.S. Territory of] Guam, authorize PAs to prescribe medications. In California, PA prescriptions are referred to as “written prescription transmittal orders.”
“For the most part,” says Genzink, “the supervising physician determines what the PA is capable of doing, within the guidelines of state law.”
Within Genzink’s hospital medicine group (with which he has been affiliated for five years) the physician and PA roles are very similar.
“We see the same type of patients in a team approach. For instance, it’s not uncommon for one of us to order a test early in the day, and then, when results come back, the other person may be discharging that patient or prescribing other treatments, if necessary,” he explains. “In general, the physicians take care of the more complicated patients, while PAs take care of more routine patients.”
Genzink’s group experience aligns with findings of a 1998 University of Pittsburgh School of Nursing Study, which evaluated provider roles and patient outcomes in an acute care setting.3 Compared with acute care nurse practitioners and PAs, residents in that study tended to care for patients who were older and sicker.
Genzink reports that in his group initial histories and physicals, as well as the consultations, are performed exclusively by the PAs and then the physician takes over for treatment. “Based on the acuity of the patient,” says Genzink, “the physician may be right down there to see the patient immediately.”
Areas for Improvement?
Although the two PAs interviewed for this article report positive experiences working with hospitalists, they admit that some physicians continue to hold misperceptions about the PA’s role in caring for patients.
Kislingbury says that hospitalists could improve their delegation of duties to the PAs and recognize their scope of practice. She admits that delegation duties can be improved through gaining experience. “Although the PA profession has been around for a while, there are a surprising number of institutions that do not utilize physician assistants on the wards in routine rounds and bedside-type care,” says Kislingbury.