Canadian Journal of Anesthesia, Vol 46, 7-14, Copyright © 1999 by Canadian Anesthesiologists' Society

ARTICLES

Early postoperative complications following neurosurgical procedures

PH Manninen, SK Raman, K Boyle and H el-Beheiry
Department of Anesthesia, University of Toronto, Toronto Hospital, Ontario, Canada. pmanninen@torhosp.toronto.on.ca

PURPOSE: To assess the incidence and characteristics of early postoperative complications in patients following neurosurgical procedures. METHODS: All patients undergoing neurosurgery during a four month period were followed postoperatively for up to four hours in the post anesthetic care unit or intensive care unit. Patient information and all complications were documented by the investigators on a standardized form. Complications were classified as respiratory, cardiovascular, nausea and vomiting, shivering and other. Risk factors analyzed for the occurrence of complications included age, sex, ASA status, type of surgery, elective or emergency surgery and postoperative placement. RESULTS: Four hundred eighty six adult patients were followed, but in 55 patients the trachea remained intubated during the four hour study period and they were eliminated from the analysis of postoperative complications. At least one complication occurred in 54.5% of the remaining 431 patients. Respiratory problems occurred in 2.8%, trauma to the airway in 4.4%, cardiovascular complications in 6.7%, neurological in 5.7% and nausea and/or vomiting in 38%. The highest incidence of patients with complications was during spine (65%) and vascular (66%) surgery, compared with tumour (47%) and other (43%) surgery, P < 0.05. Other risk factors included age < 70 yr for nausea and vomiting (P < 0.02), and elective surgery for spine and vascular surgery (P < 0.001). CONCLUSION: There was a high incidence of early postoperative complications in neurosurgical patients. The most common problem was nausea and vomiting especially in the younger patient undergoing elective spine surgery.

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