Handover of anesthesia care associated with adverse patient outcomes: study

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LONDON, ON – In the operating room, just before surgery begins the last face a patient sees and last voice they hear is that of the anesthesiologist. While surgeons rarely hand over care during a procedure to another surgeon, anesthesiologists do occasionally transfer care to a colleague after a surgical procedure is under way. A new study from Lawson Health Research Institute, Western University and the Institute for Clinical Evaluative Sciences (ICES) Western site in London, Ontario examines the operating room practice of handing over patient care between anesthesiologists.

The retrospective, population-based study, published in the journal JAMA, examined the postoperative outcomes of 313,066 adult patients undergoing major surgeries. The researchers compared patient outcomes in surgeries which did not experience a handover of anesthesia care with those where the primary anesthesiologist transferred care to a colleague and did not return to the operating room.

“Patient handovers occur for a variety of reasons, including illness or fatigue, to comply with working hour policies, or simply to balance an individual’s work hours and personal commitments,” says Dr. Philip Jones, Lawson scientist, and associate professor, Department of Anesthesia & Perioperative Medicine and Epidemiology & Biostatistics at Western University’s Schulich School of Medicine & Dentistry.

The cases examined as part of the study were of all patients in Ontario who had a surgery expected to last at least two hours and required a hospital stay of at least one night between April 2009 and March 2015. Researchers included patients undergoing a broad group of surgeries including neurosurgery, cardiac, vascular, thoracic, abdominal, pelvic and urologic surgery.

“Amongst anesthesia doctors, there has always been an assumption that handovers were ‘care neutral,’ in that they would not harm patients as long as sufficient information was communicated between anesthesiologists,” continues Dr. Jones. That assumption, combined with on-call scheduling practices that have resulted in shorter working hours, is likely a factor in the observation that handovers progressively increased in each year of the study, reaching 2.9 per cent of all major surgeries studied in Ontario in 2015.

“Our study finds that our assumptions of ‘care neutrality’ may be wrong and that, among adults undergoing major surgery, complete handover of intraoperative anesthesia care compared with no handover was associated with a higher risk of adverse postoperative outcomes. Our results are also congruent with work done by other research groups, heightening our concern about this practice,” explains Dr. Jones.

An adverse outcome (major complications, hospital readmission, and all-cause death) occurred in 29 per cent of the no-handover group and in 36 per cent of the complete handover group. On average, for every 15 patients exposed to a complete anesthesia handover, one additional patient would be expected to experience an adverse outcome.

The findings may support limiting complete anesthesia handovers or creating an improved system of anesthesia handovers. “What this study suggests is that we need to pay careful attention to patient handovers. A national consensus statement describing the appropriate circumstances for anesthesia handovers to occur, that also incorporates best practices in communication, would be a helpful start to reduce the risks associated with these handovers,” concludes Dr. Jones.

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Dr. Jones is available for interviews on Wednesday, January 10, 2018

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About Lawson Health Research Institute

Lawson Health Research Institute is one of Canada’s top hospital-based research institutes, tackling the most pressing challenges in health care. As the research institute of London Health Sciences Centre and St. Joseph’s Health Care London, our innovation happens where care is delivered. Lawson research teams are at the leading-edge of science with the goal of improving health and the delivery of care for patients. Working in partnership with Western University, our researchers are encouraged to pursue their curiosity, collaborate often and share their discoveries widely. Research conducted through Lawson makes a difference in the lives of patients, families and communities around the world. To learn more, visit www.lawsonresearch.ca.

About Western

Western delivers an academic experience second to none. Since 1878, The Western Experience has combined academic excellence with life-long opportunities for intellectual, social and cultural growth in order to better serve our communities. Our research excellence expands knowledge and drives discovery with real-world application. Western attracts individuals with a broad worldview, seeking to study, influence and lead in the international community.

About ICES

The Institute for Clinical Evaluative Sciences (ICES) is an independent, non-profit organization that uses population-based health information to produce knowledge on a broad range of health care issues. Our unbiased evidence provides measures of health system performance, a clearer understanding of the shifting health care needs of Ontarians, and a stimulus for discussion of practical solutions to optimize scarce resources. ICES knowledge is highly regarded in Canada and abroad, and is widely used by government, hospitals, planners, and practitioners to make decisions about care delivery and to develop policy. For the latest ICES news, follow us on Twitter: @ICESOntario

Media Contacts
Celine Zadorsky

Communications Consultant & External Relations
Lawson Health Research Institute
T: 519-685-8500 ext. 75664
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