Until very recently the medical care of the patient in the intensive care u
nit (ICU) was provided primarily by physicians. Many of these physicians we
re specifically trained as intensivists to manage the critically ill and pr
ovide minute to minute titration of care to improve the outcomes of these p
atients. However there has been a change in the delivery of critical care i
n many centers with the addition of NPCs (nonphysician clinicians) to the t
eam. A 1998 article in JAMA listed 10 nonphysician disciplines that will af
fect the demand for physicians in the future;(1) this article focuses on on
ly two of these disciplines: physician assistants (PAs) and acute care nurs
e practitioners (ACNPs). A driving force for the addition of these NPCs to
the ICU team is the downsizing of resident programs. This article explores
the utilization of NPCs in the ICU, including the perceived advantages and
potential controversies associated with these practitioners.