Porcelain aortaを呈した大動脈弁置換術, 冠動脈バイパス術, 腹部大動脈瘤手術の3同時手術  [in Japanese] Combined Coronary Artery Bypass Grafting, Abdominal Aortic Repair and Aortic Valve Replacement in a Case with Porcelain Aorta  [in Japanese]

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上行大動脈がporcelain aortaを呈したAVR,CABG,腹部大動脈瘤手術の心臓・大血管系の3同時手術を施行した.73歳女性で,左室-大動脈圧較差60mmHgを示し,RCAの4A-V枝に90%の狭窄を認めた.大動脈弁および上行大動脈の著しい石灰化を認め,腹部に5cmの壁在血栓を伴うAAAを認めた.手術はAVR,CABG,AAAの3同時手術を施行した.CABGのグラフトは大動脈での吻合のない右胃大網動脈を用いた.送血管は上行大動脈より行い,右房脱血にて体外循環を開始した.石灰化のない大動脈より心筋保護(CP)液を注入,大動脈遮断して,AVR施行した.冠動脈入口部の石灰化のために,選択的にCP液を注入することは難しく,大動脈切開部の石灰を除去し縫合閉鎖してから大動脈より注入した.ついでRGEAとRCAの吻合を行い,大動脈遮断解除し体外循環を終了し,AAAの人工血管置換術を行った.翌日抜管でき,現在NYHA1度で経過している.

A 73-year-old woman was admitted to undergo three simultaneous operations: aortic valve replacement (AVR), coronary artery bypass grafting (CABG) and abdominal aortic aneurysm repair. She had previously undergone percutaneous catheter intervention in the left coronary anterior descending artery. Computed tomography revealed an abdominal aortic aneurysm 5cm in diameter. Aortic valve stenosis (AS) was shown with a pressure gradient of 60 mmHg, and 90% stenosis of the distal right coronary artery was also shown. CT scan and aortography revealed porcelain ascending aorta. The patient underwent simultaneous operations because of severe AS, coronary artery disease and abdominal aortic aneurysm. An aortic cannula was placed in a position higher in the ascending aorta with no calcification. Cardiopulmonary bypass was started using a two-staged venous cannula through the right atrium. At first, AVR was performed with cardioplegic solution and ice slush. Because it was difficult to inject the cardioplegic solution into the coronary artery selectively due to the calcified orifice of coronary artery, we closed it immediately by removing the calcified intima of the porcelain aorta after completion of AVR. The second cardioplegic solution was injected through the ascending aorta. Next, CABG to RCA was performed using the right gastroepiploic artery without anastomosis to the ascending aorta. Cardiac surgery was first performed, followed by abdominal aortic aneurysm repair after discontinuation of cardiopulmonary bypass. The patient was extubated the next day and stayed for two days in the intensive care unit. She is very well now one year after the operation.


  • Japanese Journal of Cardiovascular Surgery

    Japanese Journal of Cardiovascular Surgery 31(5), 344-346, 2002-09-15

    The Japanese Society for Cardiouascular Surgery

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