ISSN : 1301-5680
e-ISSN : 2149-8156
TURKISH JOURNAL OF
THORACIC AND
CARDIOVASCULAR SURGERY
Turkish Journal of Thoracic and Cardiovascular Surgery     
TROPONIN LEVELS AFTER CORONARY ARTERY BYPASS SURGERY
Hüsnü Sezer, Ahmet Kuzgun, Cüneyd Öztürk, Sırrı Akel, Selma Sezer
International Hospital, Kalp Damar Cerrahisi Bölümü, İstanbul
Backgrounds: Cardiac troponinis is a specific marker of myocardial injury, more spesific and sensitive than creatine kinase (CK). It has been suggested that troponin I specifity to detect myocardial injury may be greater than that of troponin T.

Methods: Between september 2001- march 2002, in two hundred fifty patients, indicated for CABG troponin levels were measured. Troponin I in 125 patients, troponin T in 125 patients at 24 hours after CABG, CK and CK-MB in all patients at 6 and 24 hours were studied. After operation and at postoperative 24 hours, ECG were evaluated. ST-T segment changes, R progression, LBBB, RBBB, AF were enrolled.

Results: Troponin I level was 18.52 ± 73.95 and troponin T level was 0.32 ± 0.029. Diagnosis of perioperative myocardial infarction was established in 3 patients from troponin I group and mean troponin I was 283.95 ± 377.66. There was one patient with perioperative MI in troponin T group and troponinT was over 2 ng/mL. When the patients with ST segment changes, new Q waves, LBBB, RBBB, AF, aneurysmectomy and endarterectomy were excluded, troponin I level was 6.48 ± 9.38 (0.37-63.7) and troponin T level 0.24 ± 0.21 (0.01-1.4).

Conclusions: Serum troponin levels are very important parameters to determine the myocardial injury. Troponin I over 6 and troponin T over 0.20 must sign the myocardial protection or surgical problems.

Keywords : coronary bypass, troponin , myocardial infarction
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