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- W2364402486 abstract "Objective To determine the incidence of pre- and postoperative myocardial ischemia (MI) in patients undergoing noncardiac surgery and to identify the predictors of perioperative MI. Methods One hundred and fifty patients (99 male, 51 female) aged 42-89 yr, weighing 35-87 kg undergoing elective noncardiac surgery were enrolled in this study. Patients with left or right bundle branch block, left ventricular hypertrophy, low voltage on ECG using limb leads, being treated with digoxin or on artificial pacemaker were excluded from the study. The patients were premedicated with intramuscular atropine 0.5 mg and phenobarbital sodium 0.1 g, and were monitored continuously with dynamic ECG (DMS Holler 5.0 USA) for at least 12 h before surgery and 48 h after surgery. The incidence of MI, the number of ischemic episodes, the duration of MI and the area under the ST curve per hour were computed pre- and postoperatively. Factors that could affect MI including age, sex, weight, ASA class, history of cardiac disease, cardiac risk factors, cardiac medication, anesthesia, surgery, laboratory and other physiological data were also recorded. The potential predictors of perioperative MI were identified by univariate model and were then entered into multivariate logistic models. Results The incidence of preoperative MI was 4.7% and postoperative MI was 22.7 % . The incidence of MI and number of ischemia episodes achieved peak levels at 12-24 h after operation, while the duration of MI and the area under the ST curve peaked at 0-12 h after operation. Predictors of postoperative MI were : preoperative MI identified by ECG, age ≥ 65 yr, ASA class ≥ Ⅲ , history of angina, or hypertension or diabetes and high VAS score. Conclusion Postoperative MI usually develops on the first day after surgery. The patients at high risk for developing postoperative MI can be identified by predictors." @default.
- W2364402486 created "2016-06-24" @default.
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- W2364402486 date "2004-01-01" @default.
- W2364402486 modified "2023-09-25" @default.
- W2364402486 title "Predictors of perioperative myocardial ischemia in patients undergoing noncardiac surgery" @default.
- W2364402486 hasPublicationYear "2004" @default.
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