In two cases of thromboangitis obliterans (TAO) a popliteal-posterior tibial-peroneal artery sequential bypass was attempted through a median approach. The 1st case underwent the operation successfully with non-reversed saphenous vein graft. However, only popliteal-peroneal bypass was carried out in the 2nd patient because the posterior tibial artery was severely affected. In surgery of TAO patients, careful assessment of preoperative angiographic findings is important to select the site of distal anastomosis. We found that the posterior tibial artery and the peroneal artery are easily accessible through the medial route in the proximal half of the lower leg and that peroneal artery revascularization was effective for limb salvage.

We participated in the “Advanced Objective Structured Clinical Examination (OSCE) Osaka Trial, ” which was part of the 10th Medical Education Seminar and Workshop in Osaka. OSCEs have been used to assess students' clinical ability before the clinical clerkship program, where the medical interview and the medical examination are introduced as basic clinical skills. The Advanced OSCE is used to assess students' clinical ability after they have done clinical clerkships; it will soon be a part of the national board examination. In the present trial, the students and residents took the Advanced OSCE with 6 themes: pharyngeal pain, palpitations, dyspnea, abdominal pain, hypertension, and cardiac arrest. We examined questionnaires completed by students and residents just after they had taken the Advanced OSCE. We believe that the use of simulators is important for medical students and residents to improve their clinical skills and that appropriate feedback is also extremely important.

We reviewed the results of 14 patients who underwent the operation of thoracic aneurysms using a centrifugal pump. Nine patients had atherosclerotic aneurysms and 5 had aortic dissections. The autotransfusion system (ATS) was used to keep hemodynamic stability by rapid transfusion. The ATS consisted of a roller pump, a 2, 000ml reservoir and a heat exchanger. Two mg/kg of heparin was given to the patients to keep ACT over 400 seconds. All patients survived. Body temperature increased 0.08±0.59°C during bypass with the ATS, and no patients showed hemodynamic instability after aneurysmotomy under the help of the ATS. We conclude that 1) the centrifugal pump is a useful and safe assisting means for the surgery of thoracic aneurysms, 2) the autotransfusion system has advantages as follows: keeping stable circulation and preventing loss of body temperature during bypass.