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Can J Anaesth. 2012 Aug;59(8):798-804. doi: 10.1007/s12630-012-9737-1. Epub 2012 May 26.

A brief review of practical preoperative cognitive screening tools.

Author information

1
Department of Anesthesia & Perioperative Care, University of California, San Francisco, 521 Parnassus Avenue, Room C-450, San Francisco, CA 94143-0648, USA. longs1@anesthesia.ucsf.edu

Abstract

PURPOSE:

Preoperative cognitive impairment is associated with the development of postoperative delirium, a common and consequential complication of major surgery in older patients. Screening for cognitive impairment should become a routine part of the preoperative evaluation of older patients; however, its implementation is hampered by limited clinical time and resources. The objective of this review was to identify cognitive screening tools that could be easily incorporated into the evaluation of older patients before major surgery.

SEARCH STRATEGY:

Using strict inclusion and exclusion criteria, we searched PubMed over a 15-year period for short and simple cognitive screening tools. In addition, we reviewed studies that examined these cognitive screening tools in a perioperative environment. SEARCH RESULTS: We identified six cognitive screening tools that could each be administered in 2.5 min or less. Among the tools, sensitivity for cognitive impairment ranged from 79-99%, while specificity ranged from 70-98%. Only one (Mini-Cog) of the six tools we identified had been tested in a perioperative environment.

CONCLUSIONS:

Incorporating a cognitive screening assessment into the preoperative evaluation of older patients is feasible. More research is needed to validate cognitive screening tools in the perioperative setting.

PMID:
22638676
PMCID:
PMC3711831
DOI:
10.1007/s12630-012-9737-1
[Indexed for MEDLINE]
Free PMC Article
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