Ravi B, et al. JAMA Network Open. 2019;doi:10.1001/jamanetworkopen.2019.0111.

February 22, 2019
1 min read

Increased duration of hip fracture surgery may increase risk for postoperative delirium


Ravi B, et al. JAMA Network Open. 2019;doi:10.1001/jamanetworkopen.2019.0111.

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Bheeshma Ravi

Results published in JAMA Network Open showed an increased risk for postoperative delirium was associated with an increased duration of surgery and receiving general anesthetic among older adults undergoing hip fracture surgery.

Bheeshma Ravi, MD, and colleagues determined the relationship between procedure duration, type of anesthesia and the occurrence of postoperative delirium using generalized estimated equations with logistic regression analysis among patients aged 65 years or older who underwent hip fracture surgery at 80 hospitals in Ontario, Canada.

Of the 68,131 patients who underwent hip fracture surgery, results showed 26,853 patients received general anesthesia and 7,150 experienced postoperative delirium. Researchers found an association between receiving general anesthesia and a slightly greater rate of postoperative delirium when compared with patients who did not receive general anesthesia. Increased surgical duration also increased the risk for delirium, according to results, with a 6% increase in the risk for delirium for every 30-minute increase in the duration of surgery. Results also showed a greater incidence of postoperative delirium with prolonged surgical duration. Researchers noted the risk of delirium was greater among patients with prolonged surgical duration who had received general anesthesia. – by Casey Tingle


Disclosures: Ravi reports no relevant financial disclosures. Please see the full study for a list of all other authors’ relevant financial disclosures.