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Article in Japanese | WPRIM | ID: wpr-738362


Background : Endoscopic vessel harvesting (EVH) is one of the less-invasive graft harvesting techniques for CABG. On the other hand, it needs certain amount of a learning curve to acquire sufficient technique. Inappropriate manipulation will cause damage of the vein, decrease the patency and affect the patient's long-term survival. Off-the-job training has the potential to shorten the length of the learning curve. In this study we evaluated the effectiveness of a newly developed saphenous vein harvesting model provided by EBM corporation. Purpose : To evaluate the effectiveness of concentrated training with the EVH simulator. Objective and Methods : One novice trainee doctor was recruited for this study. After 20 procedures using the simulator training clinical device, EVH was performed under supervision. This procedure was compared with the last case before the training in terms of setup for the EVH, visualization by endoscope, dissection, division of branches, duration of the procedure, and number required for repair. Results : The duration required to train with the simulator showed a stable average of 10 cases. All the elements in terms of EVH procedure were improved after the simulator training. Discussion : It is important to prepare an appropriate simulator, trainer, and clear purpose for effective training. It was beneficial to enhance the clinical level with the concentrated simulator training. Conclusions : The newly developed EVH model is an effective simulator before performing the initial clinical case.

Article in Japanese | WPRIM | ID: wpr-378129


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.

Article in Japanese | WPRIM | ID: wpr-361961


A 70-year-old man who had been followed up in our outpatient clinic for mild aortic regurgitation underwent curative surgery for progression of the regurgitation due to a prolapsed right coronary cusp, associated with annular dilatation and aortic root aneurysm formation. The Operation consisted of subvalvular circular annuloplasty to reduce the size of the aortic annulus, adjustable leaflet suspension for the prolapsed right coronary cusp, and modified aortic root remodeling, which replaced the Valsalva sinus of both non and right coronary cusps while sparing the Valsalva sinus of the left coronary cusp. Coronary artery bypass grafting was additionally performed for the 90% stenosis of the proximal right coronary artery segment. The postoperative course was uneventful with no need of blood transfusion. He was discharged from the hospital 10 days postoperatively. This combination of valvuloplasty with valve-sparing aortic root reconstruction procedure can be useful.