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  • Title: [Indication and result of hypothermic fibrillatory arrest in coronary artery bypass grafting].
    Author: Okamura Y, Sugita Y, Mochizuki Y, Iida H, Mori H, Tabuchi K, Matsushita Y, Kobayashi S, Shimada K.
    Journal: Nihon Kyobu Geka Gakkai Zasshi; 1996 May; 44(5):623-8. PubMed ID: 8964990.
    Abstract:
    Currently, cardioplegic arrest is used for almost all coronary artery bypass grafting (CABG). However, there are some cases in which aortic occlusion or the cardioplegic infusion is not desirable. In this paper, we discussed the indications and the usefulness of hypothermic fibrillatory arrest for CABG. From April 1992 to March 1995, CABG with hypothermic fibrillatory arrest was performed in 6 patients (3.9% of total CABG cases). The reasons of employing hypothermic ventricular fibrillation were as follows; calcified ascending aorta in 2 patients, coronary aneurysm associated with Behçet's decrease in 1, revascularization to the totally obstructed branches with poor left ventricular function in 2, and collateral circulation from bronchial artery with total obstruction of left main trunk in 1. The age range was 48 to 68 years with a mean of 59.0 +/- 7.8 years. Five patients had a history of myocardial infarction and 2 of them had a left ventricular ejection function less than 0.25. Surgical procedures consisted of elective ventricular fibrillation without aortic cross-clamp, systemic hypothermia and local pericardial cooling, left atrial or pulmonary artery venting, and local vessel isolation during distal anastomosis. Average number of grafts was 2.0 +/- 0.6, and 5 left internal thoracic arteries, 2 gastroepiploic arteries and 5 saphenous vein were used. Mean duration of ventricular fibrillation was 74.0 +/- 17.5 min. Postoperative angiography confirmed all bypasses patent. Only 1 patient, whose preoperative left ventricular ejection function was 0.20, died of heart failure 5 months after the operation. All other patients survived asymptomatically. Hypothermic fibrillatory arrest is useful and reliable technique in coronary artery bypass grafting when aortic occlusion or cardioplegic arrest is not desirable.
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