Sex-based differences in serum cardiac troponin I, a specific marker for myocardial injury, after cardiac surgery.

Abstract:

BACKGROUND:Prevalence and causes of sex-based differences in morbidity and mortality secondary to cardiovascular disease remain controversial. Cardiac troponin I (cTnI) is a sensitive and specific marker for myocardial injury. Serial cTnI measurements have been used to identify perioperative myocardial cell injury. OBJECTIVE:To determine whether sex influences the extent of myocardial injury during cardiac surgery, we measured perioperative cTnI in male and female patients. DESIGN:A total of 17 male and 17 female patients were prospectively studied in an age- and case-matched manner. Arterial cTnI were obtained preinduction, 30 mins after the application of the aortic cross-clamp, at arrival to the intensive care unit, and on postoperative day 1. SETTING:Tertiary cardiac surgery center at a major teaching hospital. RESULTS:There was no difference between men and women in body mass index (kg/m2), duration of cardiopulmonary bypass, and aortic cross-clamp times. Preoperative cTnI measurements were similar in men (0.24 +/- 0.15 ng/mL) and women (0.25 +/- 0.13 ng/mL, mean +/- sem). The maximum serum cTnI occurred on postoperative day 1 in all patients, and it was 3-fold higher in men (18.5 +/- 5.7 ng/mL) compared with women (6.4 +/- 1.0 ng/mL). CONCLUSIONS:Men had markedly higher serum cTnI compared with women, although they were case matched with respect to age and cardiac risk factors. Our results may suggest there may be sex-related differences in the myocardial response to ischemia and reperfusion injury or intrinsic differences between the male and female myocardium.

journal_name

Crit Care Med

journal_title

Critical care medicine

authors

Schwarzenberger JC,Sun LS,Pesce MA,Heyer EJ,Delphin E,Almeida GM,Wood M

doi

10.1097/01.CCM.0000055442.84685.4D

subject

Has Abstract

pub_date

2003-03-01 00:00:00

pages

689-93

issue

3

eissn

0090-3493

issn

1530-0293

journal_volume

31

pub_type

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