[Emergency CABG for patients with LMT lesion treated by mechanical cardiac support]

We retrospectively analysed the perioperative course of 22 patients who underwent emergency CABG for severe left main trunk lesion. The causes of LMT lesion were spontaneous acute myocardial infarction in 14 patients and failed coronary intervention and coronary angiography in 8 patients. IABP was used preoperatively in all patients and additional coronary perfusion catheter were induced for two patients and PCPS was for one patient. Overall incidence in-hospital operative mortality was 22.7% (5/22), four of them were due to cardiac related causes and one of them was due to acute renal failure. Postoperative level of max CPK enzyme was significantly higher in death cases compared to survivors, 6,330 +/- 3,649 versus 1,299 +/- 1,417 IU/dl. We considered that the most important factors in surgical strategy for acute coronary syndrome with LMT lesion were as follows: improvement of hemodynamics with mechanical cardiac support by IABP or/and PCPS, protection of broad myocardial ischemia using coronary perfusion catheter and urgent surgical revascularization by emergency CABG.