RT Journal Article
SR Electronic
T1 Incidence and predictors of postoperative delirium in the older acute care surgery population: a prospective study
JF Canadian Journal of Surgery
JO CAN J SURG
FD Canadian Medical Association
SP 33
OP 38
DO 10.1503/cjs.016817
VO 62
IS 1
A1 Bianka Saravana-Bawan
A1 Lindsey M. Warkentin
A1 Diana Rucker
A1 Frances Carr
A1 Thomas A. Churchill
A1 Rachel G. Khadaroo
YR 2019
UL http://canjsurg.ca/content/62/1/33.abstract
AB Background: Among older inpatients, the highest incidence of delirium is within the surgical population. Limited data are available regarding postoperative delirium risk in the acute care surgical population. The purpose of our study was to establish the incidence of and risk factors for delirium in an older acute care surgery population.Methods: Patients aged 65 years or more who had undergone acute care surgery between April 2014 and September 2015 at 2 university-affiliated hospitals in Alberta were followed prospectively and screened for delirium by means of a validated chart review method. Delirium duration was recorded. We used separate multivariable logistic regression models to identify independent predictors for overall delirium and longer episodes of delirium (duration ≥ 48 h).Results: Of the 322 patients included, 73 (22.7%) were identified as having experienced delirium, with 49 (15.2%) experiencing longer episodes of delirium. Postoperative delirium risk factors included Foley catheter use, intestinal surgery, gallbladder surgery, appendix surgery, intensive care unit (ICU) admission and mild to moderate frailty. Risk factors for prolonged postoperative delirium included Foley catheter use and mild to moderate frailty. Surgical approach (open v. laparoscopic) and overall operative time were not found to be significant.Conclusion: In keeping with the literature, our study identified Foley catheter use, frailty and ICU admission as risk factors for delirium in older acute care surgical patients. We also identified an association between delirium risk and the specific surgical procedure performed. Understanding these risk factors can assist in prevention and directed interventions for this high-risk population.