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1.
Japanese Journal of Cardiovascular Surgery ; : 6-10, 1998.
Artigo em Japonês | WPRIM | ID: wpr-366368

RESUMO

A total of 56 patients undergoing coronary artery bypass grafting were allocated to two groups: the Cold group (28 patients) with cold (4°C) crystalloid cardioplegia and topical ice slush, and the Tepid group (28 patients) with tepid (32°C) blood cardioplegia delivered intermittently antegrade. The two groups were comparable in terms of preoperative New York Heart Association classification, age, gender, and number of grafts. Intraoperatively, tepid blood cardioplegia was associated with a significantly shorter cardiopulmonary bypass time and nearly uniform return of normal sinus rhythm. Cardiac output after bypass was significantly higher than before bypass only in the Tepid group. The absolute peak levels in the myocardial-specific isoenzyme of creatine kinase were higher in the Cold group (70±8IU/<i>l</i>) than in the Tepid group (31±5IU/<i>l</i>). There was a trend toward reduced incidence of perioperative myocardial infarction (0% versus 7.1%) and need for intraaortic balloon pump support (0% versus 3.6%) associated with the use of tepid blood cardioplegia. Our results suggest that intermittent tepid blood cardioplegia is a safe and effective technique for coronary artery bypass grafting.

2.
Japanese Journal of Cardiovascular Surgery ; : 182-185, 1997.
Artigo em Japonês | WPRIM | ID: wpr-366305

RESUMO

Aberrant right subclavian artery is a common congenital anomaly of the aortic arch, with a reported prevalence of approximately 0.5%. However aneurysms of this aberrant vessel are very rare. A 71-year-old man was admitted with cerebral hemorrhage. Chest X-ray revealed an abnormal upper mediastinal shadow. Angiography, computed tomography (CT) scan, and magnetic resonance (MR) imaging revealed an aberrant origin of the right subclavian artery arising as the fourth branch of the aortic arch and crossing the mediastinum from left to right indenting the esophagus posteriorly. The origin of the right subclavian artery was aneurysmal (maximum diameter was 5cm), and this aneurysm did not compress the esophagus. The patient was treated by Dacron patch graft aortoplasty and right subclavian artery reconstruction with the aid of cardiopulmonary bypass and hypothermic selective cerebral perfusion. The postoperative course was uneventful and there were no major complications. The surgical technique is detailed as well as a review of all the cases in the literature.

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