Abstract:
BACKGROUND:Medicines are potentially modifiable risk factors for postoperative delirium. However, the extent to which preoperative medicines are included in risk prediction models (RPMs) is unknown. OBJECTIVE:This systematic review aimed to assess the extent of inclusion of preoperative medications in RPMs for postoperative delirium. METHODS:Articles were systematically searched from MEDLINE, EMBASE and CINAHL using Medical Subject Headings (MeSH) where possible and keywords for postoperative delirium and prediction model. Studies published until May 2017 with a primary outcome of postoperative delirium that developed an RPM containing preoperative patient information were considered. Where a study had two cohorts, a derivation and a validation cohort, findings from the derivation cohort were extracted and reported. RESULTS:Eighteen prospective and one retrospective cohort studies were included for review. Of the 19 studies, only nine considered preoperative medication data, with medications appearing as predictor variables in five models. There was wide variability in the factors included in the final models, with the most frequent predictors being age and cognitive impairment, appearing in 13 (68%) and 11 (58%) RPMs, respectively. CONCLUSION:While medications are commonly cited risk factors for delirium, they are not adequately considered when developing RPMs. Future studies aiming to develop an RPM for postoperative delirium should include preoperative medication data as a potential predictor variable because of the modifiable nature of medication use and its impact on other factors commonly in models, such as cognition.
journal_name
Drugs Agingjournal_title
Drugs & agingauthors
Kassie GM,Nguyen TA,Kalisch Ellett LM,Pratt NL,Roughead EEdoi
10.1007/s40266-018-0526-6subject
Has Abstractpub_date
2018-03-01 00:00:00pages
213-222issue
3eissn
1170-229Xissn
1179-1969pii
10.1007/s40266-018-0526-6journal_volume
35pub_type
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