Prevalence of ICU nurses has strong link to patient outcomes

Patients undergoing high-risk surgeries are more likely to have post-operative complications, including difficulty breathing, if their hospital's intensive care unit (ICU) isn't sufficiently staffed by nurses, according to a Johns Hopkins study of Maryland hospitals.

Results of the study, published in the October issue of Effective Clinical Practice, a journal of the American College of Physicians, indicate that while the optimal nurse-to-patient ratio remains to be determined, intensive care units having ratios of one nurse for every three or four patients, rather than one or two, have significantly higher rates of post-surgical complications.

Overall, 47 percent of patients treated in hospitals with fewer ICU nurses and 34 percent treated in hospitals with more ICU nurses had at least one complication. Patients treated in hospitals with fewer ICU nurses were more likely to have medical complications (43 percent vs. 28 percent) or respiratory failure (21 percent vs. 13 percent), or need a breathing tube re-inserted (21 percent vs. 13 percent). Nurse staffing did not affect the risk for surgical complications.

"Nurses who care for three or more patients may have less time to devote to patient care especially preventive measures, such as post-operative pulmonary care," says Peter J. Pronovost, M.D., Ph.D., lead author of the study and associate professor of anesthesiology and critical care medicine. "Hospital administrators who reduce the number of ICU nurses in order to cut costs may actually cost themselves more in the long run."

For the study, researchers analyzed hospital discharge data for 2,606 abdominal aortic aneurysm patients who were treated at 38 hospitals in Maryland between 1994 and 1996, looking at medical and surgical complications such as pulmonary problems, kidney failure, heart complications, bloodstream infection and post-operative bleeding. People with abdominal aneurysm -- a dangerous ballooning of a ma

Contact: Karen Blum
Johns Hopkins Medical Institutions

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