Double Valve Replacement Using Manouguian Technique for Deteriorated Bioprosthetic Mitral Valve after Aortic and Mitral Valve Replacement / 日本心臓血管外科学会雑誌

An 83-year-old woman (BSA 1.36 m2) who had undergone aortic valve replacement (Magna ease 19 mm), mitral valve replacement (Epic mitral 25 mm), tricuspid annuloplasty (De Vega technique), and pulmonary vein isolation eight years earlier was referred to our hospital due to her heart failure symptoms. Ultrasound cardiography revealed severe mitral regurgitation due to perforation of bioprosthetic valve, severe mitral valve stenosis (mean pressure gradient 7.8 mmHg) due to bioprosthetic deterioration, and subsequent pulmonary hypertension (mean pulmonary artery pressure 49 mmHg, tricuspid regurgitation pressure gradient 85.5 mmHg). We performed a redo aortic valve (Inspiris 23 mm) and mitral valve (Epic mitral 29 mm) replacement using the Manouguian technique. The postoperative course was uneventful and pulmonary hypertension improved (tricuspid regurgitation pressure gradient 39.6 mmHg).

Balloon Aortic Valvuloplasty for a High-Risk Patient Using Percutaneous Cardiopulmonary Support / 日本心臓血管外科学会雑誌

Balloon aortic valvuloplasty (BAV) is a treatment for high risk patients with severe aortic valve stenosis (AS). Rapid pacing is needed to reduce cardiac output when dilating the balloon, but it may cause cardiac ischemia or lethal arrhythmia. In this case report, percutaneous cardiopulmonary support (PCPS) was used to prevent these complications with BAV. We achieved adequate blood pressure and cardiac output during BAV without using rapid pacing by drawing a certain amount of blood into the reservoir equipped with the PCPS circuit. When performing BAV, PCPS may be a useful option for the patients who have high risks of circulatory failure.

A Successful Case of Ascending Aorta-Abdominal Aorta Bypass in a Patient with Atypical Coarctation / 日本心臓血管外科学会雑誌

A 69-year-old woman was admitted with severe hypertension and intermittent claudication. The results of further examination, showed that the hypertension and intermittent claudication were due to stenosis of the descending aorta and we diagnosed atypical aortic coarctation. We performed median sternotomy and ventrotomy with side-to-end anastomosis a woven Dacron graft and the ascending aorta. The graft was passed through the lesser omentum, and mesocolon and to abdominal aorta. The postoperative state was stable, and the hypertension and intermittent claudication were remarkably ameliorated. Many cases of extra-anatomical bypass were reported, and the ascending aorta-abdominal aorta bypass was useful method and, very successful with no complications in this case.

Ruptured Coronary Artery Aneurysm with a Fistulous Communication / 日本心臓血管外科学会雑誌

A 68-year-old woman was referred to our hospital with arrhythmia and cardiomegaly. She lost consciousness in the waiting room. After urgent hospitalization, cardiac ultrasonography showed cardiac tamponade, and urgent pericardial drainage was performed. A ruptured coronary aneurysm with a fistulous communication was diagnosed by CT scan and coronary angiography. Under extracorporeal circulation, ligation of the unusual coronary vessels and resection of the aneurysm were performed. The postoperative course was uneventful and she was discharged on the 25th postoperative day. No ischemic signs were observed on treadmill test at one year after surgery. Most congenital coronary aneurysms are asymptomatic; however, once rupture occurs, it is important to diagnose this condition rapidly and treat surgically.

Successful Surgical Repair of Left Main Coronary Artery Total Occlusion with Aortitis Syndrome / 日本心臓血管外科学会雑誌

We report the successful repair of left main coronary artery obstruction with aortitis syndrome. She was a 39-year-old woman and was admitted to Saiseikai Kumamoto Hospital because of angina pectoris. Her bilateral radial artery pulsation was not palpable. Total occlusion of the left main coronary artery (LMT) and bilateral subclavian artery was detected by angiography. Patch enlargement of the LMT was performed using a Distaflo (Impra Carbon PTFE) graft. Postoperative coronary angiography showed an adequate LMT diameter and sufficient blood flow.

Clinical Applications and Pitfalls of Hypothermia in Patients after Fontan's Operation / 日本心臓血管外科学会雑誌

This study was designed to clarify the usefulness and pitfalls of hypothermic management after Fontan's operation. Twenty-five patients who underwent Fontan's operation and received hypothermic management in an acute postoperative phase from 1974 to 1991 were divided into two groups; the alive (S) group and the dead (D) group. The lowest rectal temperature during the procedure was 32°C on average. There were no significant differences in preoperative indices of pulmonary circulation and renal function. After rewarming, PaO₂ and daily urinary output were increased and central venous pressure decreased significantly in the S group. In all S group patients, urinary output was increased during hypothermia irrespective of peritoneal dialysis. Anuria occurred 2 days on average after induction of hypothermia in D group. Urinary output in D group decreased significantly for 4 days compared to S group. On the other hand, it was possible to save two patients who underwent take-down of Fontan's operation within 6 hours after the onset of anuria. We conclude that hypothermic management is useful in serious cases after Fontan's operation and that daily urinary output in relation to body weight during hypothermia is most important as an index of post operative circulation.