Postoperative CK-MB and troponin, even at low cutoff levels, are independent and complementary predictors of long-term mortality after major vascular surgery.

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The purpose of this study was to analyze the vascular complications of 24 children with supracondylar humeral fractures treated in two affiliated hospitals and to propose a management plan. Exploration and repair of the brachial artery were undertaken in 11 of the 24 cases in which the pulse did not resume following reduction of the fracture. The repaired vessels were found to be patent on follow-up. Angiography was performed in six of the 24 cases and resulted in improved management in comparison with cases in which no angiography was performed. We believe that intra-operative angiography and vascular repair are indicated in most cases in which a palpable pulse does not resume after fracture reduction.

To investigate the associations between specific preoperative 12-lead electrocardiogram (ECG) abnormalities , perioperative ischemia, and postoperative myocardial infarction or cardiac death in major vascular surgery.Methods: Two prospective studies on perioperative myocardial ischemia performed in two tertiary university hospitals were combined to include 405 patients. All preoperative ECGs were analyzed according to the Sokolow-Lyon criteria for left ventricular hypertrophy by investigators who were blinded to the patients' perioperative clinical course. Perioperative myocardial ischemia was detected by continuous ECG recording, and postoperative cardiac complications included myocardial infarction and cardiac death.Results: A total of 19 postoperative cardiac complications occurred (two cardiac deaths and 17 myocardial infarctions). Voltage criteria for left ventricular hypertrophy (78 patients, 19%) and ST segment depression greater than 0.5 mm (98 patients, 24.2%) on preoperative ECGs were both significantly associated with postoperative myocardial infarction or cardiac death (odds ratio, 4.2 and 4.7; p = 0.001 and 0.0005, respectively) and with longer intraoperative and postoperative myocardial ischemia. In each of the two study groups, a preoperative ECG abnormality that involved voltage criteria, ST segment depression, or both (134 patients, 33.1%) was more predictive of postoperative cardiac complications than any other preoperative clinical variable, including a history of myocardial infarction or angina pectoris, diabetes mellitus, pathologic Q-wave by ECG, or preoperative myocardial ischemia. The combined duration of intraoperative and postoperative ischemia and the preoperative ECG with either voltage criteria or ST segment depression were the only independent factors associated with adverse cardiac events by multivariate analysis (p -< 0.0001 and p = 0.02, respectively). Conclusion:Left ventricular hypertrophy and ST segment depression on preoperative 12-lead ECGs are important markers of increased risk for myocardial infarction or cardiac death after major vascular surgery.

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