Purpose: This retrospective study sought to determine the benefr of measurement of changes in plasma creatine kinase -myocardial band (CK-MB) levels in elective postoperative high risk sur~=al patients beyond that obtained from the surface 12 lead ECG. .Mc'~r~ol~: The charts of I 1 I patients admitted to the surgical intensive care unit (SICU) of a tertiary level university teaching hospital were reviewed. They were screened using predetermined definitions of myocardial infection (MI) (as reflected by changes in the 12 lead surface ECG (Minnesota code) or elevations in CK-MB) for complications such as pulmonary oedema, congestive heart failure, arrhybhmias, or cardiogenic shock. Four groups were identified based on changes in the ECG indicative of MI (Present -ECG+ or Absent -ECG-) and elevations of CK-MB (Present -CKMB+ or Absent -CKMB-) and compared for the incidence of complications. ]P,J~ts: No patient with ECG-findings had a complication. F~een patients with ECG+ findings were identified and all had complications. Fourteen of these patients had CKMB+ results. In contrast, 29 patients with CKMB+ results alone (i.e., ECG-) had no complications. Conch~ion: Clinically important (i.e., requiring therapeutic intervention) postoperative myocardial infarction was detected by ECG changes. The benef~ of determining changes in CK-MB was minimal from a therapeutic perspective, Objectif : Cette 6rude retrospective visait A comparer les avantages,,,~ la pEriode postopEratoire, de la mesure des variations de la crEatine phosphokynase-MB (CK-MB) ~t ceux de I I~CG ~. 12 d~rivations chez des patients ,~ haut risque. M6-thodes : REvision des dossiers de II I patients admis ~ I'unitE des soins intensifs chirurgicaux d'un h6pital universitaire de soins tertiaires. Tout en utilisant les d~finitions prE~tablies de rinfarctus du myocarde (IM) (changernents ,~ I'I~CG A 12 derivations (code du Minnesota) ou augmentation de la CK-MB), on a recherche les complications comme I'oedEme pulmonaire, I'insuflisance cardiaque congestive, les arythmies ou le choc cardio, gEnique. Quatre grou~, s ont EtE identifies sur la base des changernents I~CG indicatifs de riM (IM present avec ECG+ ou absent avec ECG-) et des ElEvations de la CK-MB (IM present avec CPK-MB + ou absent avec CPK-MB-) et compares en rapport avec I'incidence des complications.

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