Highly trained nurse practitioners (NPs) and physician assistants (PAs) are just as capable of performing screening colonoscopies as gastroenterologists: This is the conclusion from a number of studies conducted across both the United States and Europe.
So, why aren’t more NPs and PAs doing them?
“We wanted it to take off, but we haven’t been able to do it,” said San Diego gastroenterologist Daniel “Stony” Anderson, MD. He spent decades working to expand access to colorectal cancer screening at Kaiser Permanente and other health care organizations, and he has now been doing the same as president of the California Colorectal Cancer Coalition.
Anderson told this news organization that he isn’t sure why the practice did not catch on but added, “I don’t see a groundswell for this.”
One explanation has been that the centers abandoned the practice because there were enough gastroenterologists to handle the demand.
Or perhaps it was one battle too many for NPs and PAs, who are fighting at the state level and at Veterans Affairs (VA) for permission to deliver more primary care and anesthesia services.
In addition, doctors are fighting back.
The American Medical Association runs a Stop Scope Creep campaign that opposes attempts by NPs and PAs “to inappropriately expand their scope of practice.” Along with anesthesiologists, the AMA is fighting the extension of a COVID-19 waiver at the VA that allows NPs and PAs to continue delivering anesthesia without a physician’s supervision. Other groups have joined in the battle against practice expansion via social media under the hashtags #stopscopecreep and #patientsafetymatters.
The battle is ongoing and ugly at times.
Proponents describe NPs and PAs as “advanced practice providers” but opponents call them “midlevel practitioners.” One website called Midlevel WTF argues that the health care system is declining, in part, because of “the proliferation of poorly supervised or completely unsupervised midlevels across the health care spectrum.”
NPs perform colonoscopies ‘safely and effectively’
One of the studies to examine the issue of NPs performing screening colonoscopies, and how this compares with gastroenterologists performing the procedure, was published in Endoscopy International Open in October 2020.
In a retrospective analysis from Johns Hopkins Hospital in Baltimore, the authors concluded that three fellowship-trained NPs satisfied the American College of Gastroenterology’s quality indicators and “demonstrated that adequately trained NPs can perform colonoscopy safely and effectively.”
There was little reaction to this conclusion when the study was published. But some months later, several gastroenterologists on social media began questioning the high percentage of African Americans in the study and suggested that the research exploited Black patients, according to a story in STAT, a national health news website.
In a written statement, Hopkins said in an interview, from 2010 to 2016, patients were given the option to have an NP or physician provide a screening colonoscopy. However, they are no longer offered that option. The project has been discontinued: The gastroenterologist who was overseeing the clinical program, Anthony Kalloo, MD, director of the division of gastroenterology and hepatology, left John Hopkins earlier this year, and two of the three NPs involved in the program have also left.
Dr. Kalloo declined to comment but was quoted at length in the STAT article. He noted that NPs regularly perform colonoscopies in the United Kingdom and that the John Hopkins study showed, for the first time, “that we could do this in the United States, and the implication of that is cost savings.”
Dr. Kalloo also defended his work against claims of racial exploitation. In fact, he said, “I found those comments to be amusing. ... Obviously, they saw that I was the lead author from Hopkins, but they obviously didn’t know what I look like.” Dr. Kalloo is Black.
Dr. Kalloo is now chair of the department of medicine at Maimonides Medical Center, New York City, and he told STAT that he was interested in starting up a similar project there to train NPs to perform colonoscopies.
Other centers that explored the practice have also not continued with it.
A 2008 study at the University of California, Davis, notes: “Several barriers to colorectal cancer screening have been identified, including limited access to trained endoscopists and highlight insufficient capacity to meet projected demand for colonoscopies. ... Training NPs to perform colonoscopy may be an effective strategy to increase access.”
The study compared 100 screening colonoscopies performed by board certified gastroenterologists (GI-MD) and 50 performed by a gastroenterology-trained NP (GI-NP). There were no complications reported among the 150 cases, and “the GI-NP in our study performed screening colonoscopy as safely, accurately, and satisfactorily as the GI-MDs,” the authors conclude.
But it’s not a strategy the hospital adopted. The nurse who conducted the study said in an interview that she is no longer doing them and declined further comment. The University of California, Davis could not confirm whether anyone else is.