Faculty Collaboration Database

Elevated postoperative inflammatory biomarkers are associated with short- and medium-term cognitive dysfunction after coronary artery surgery. J Anesth 2011 Feb;25(1):1-9

Date

11/10/2010

Pubmed ID

21061037

DOI

10.1007/s00540-010-1042-y

Scopus ID

2-s2.0-79952245068 (requires institutional sign-in at Scopus site)   102 Citations

Abstract

PURPOSE: We tested the hypothesis that elevated postoperative interleukin-6 (IL-6) and C-reactive protein (CRP) concentrations are associated with short- and medium-term impairment of cognitive functions in patients after coronary artery surgery using cardiopulmonary bypass.

METHODS: Eighty-six age- and education-balanced patients ≥55 years of age undergoing elective coronary artery bypass surgery with cardiopulmonary bypass and 28 nonsurgical controls with coronary artery disease were enrolled. Recent verbal and nonverbal memory and executive functions were assessed before surgery and at 1 week and 3 months after surgery using a cognitive test battery. IL-6 concentrations were measured before surgery and 4 h after cardiopulmonary bypass, and CRP concentrations were measured before surgery and at 24 and 72 h after anesthetic induction. Overall cognitive function between high and low biomarker concentration groups was analyzed by the Wilcoxon rank-sum test.

RESULTS: Recent memory was at least 1 standard deviation (SD) impaired at 1 week and 3 months in the high-CRP compared with low-CRP and in the high-IL-6 compared with low-IL-6 concentration groups. Overall cognitive function was significantly (P = 0.04 and P = 0.01, respectively) different between the high- and low-CRP concentration groups (CRP assayed 24 h after anesthetic induction) at both 1 week and 3 months. Overall cognitive function was also significantly (P = 0.04) different between the high and low-IL-6 concentration groups at 1 week after surgery.

CONCLUSION: The results suggest that elevated postoperative IL-6 and CRP concentrations are associated with the subsequent development of short- and medium-term impairment of cognitive functions after coronary artery surgery.

Author List

Hudetz JA, Gandhi SD, Iqbal Z, Patterson KM, Pagel PS

Author

Sweeta D. Gandhi MD Associate Professor in the Anesthesiology department at Medical College of Wisconsin

MESH terms used to index this publication - Major topics in bold

Age Factors
Aged
Anesthesia, General
Anesthetics
Biomarkers
C-Reactive Protein
Cardiopulmonary Bypass
Cognition Disorders
Education
Female
Humans
Inflammation
Interleukin-6
Male
Middle Aged
Neuropsychological Tests
Postoperative Complications
Sample Size