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Article in Japanese | WPRIM | ID: wpr-375901


An 80-year-old man felt a loss of strength and sharp pain in both lower limbs while playing gate-ball, consulted a nearby doctor, and was followed up. Because the sharp pains in both lower limbs became aggravated the next day, he was given a previously prescribed medication. Both femoral pulses were absent and acute arterial obstruction of the lower limbs was suspected. A contrast-enhanced CT scan showed a thrombosed infrarenal abdominal aortic aneurysm with a maximum transverse diameter of 37 mm, and both external iliac arteries were contrast imaged by collateral circulation pathways. We diagnosed acute thrombosis of an abdominal aortic aneurysm, and was urgently transported to our hospital. We classified his lower limbs as Balas grade III and TASC classification grade IIb and Rutherford classification grade IIb. He exhibited no abdominal symptoms and since we confirmed the blood flow of his lower limbs, we decided to perform revascularization. An extra-anatomical bypass (axillo-bifemoral bypass) was conducted because he had dementia, and was old. After the operation, myonephropathic metabolic syndrome (MNMS) did not develop, and the patient was discharged on foot on the 16th postoperative day. Acute thrombosis of an abdominal aortic aneurysm is a rare disease. Because the ischemic area widens, often causing serious MNMS after the revascularization, it has a poor prognosis. Here, we report a case in which one such patient was rescued.

Article in Japanese | WPRIM | ID: wpr-366570


Risk factors for stroke after coronary artery bypass grafting (CABG) were assessed. We retrospectively investigated 681 consecutive patients who underwent isolated, first-time CABG at our institute between 1987 and 1998. Ninety-eight patients (14%) had a history of preoperative stroke. They tended to be older and with a higher incidence of peripheral vascular disease (PVD) than those without preoperative stroke. In spite of several techniques for prevention of postoperative stroke, such as the aortic non-touch technique, 14 patients (2.0%) suffered postoperative stroke. Postoperative stroke was diagnosed soon after surgery in 7 patients (50%), and the causes of stroke in these patients seemed to be intraoperative manipulation of the ascending aorta in 5, and hypoperfusion during cardiopulmonary bypass in two. Stroke in the remaining 7 patients occurred after normal awakening from anesthesia, and the cause was unknown. We then compared the patients with postoperative stroke (<i>n</i>=14) to those without postoperative stroke (<i>n</i>=667). Statistical analysis demonstrated no significant difference between the two groups in variables such as history of preoperative stroke, duration of cardiopulmonary bypass, and prevalence of PVD. Four (29%) of the patients with postoperative stroke died, due mainly to aspiration pneumonia. The morbidity and mortality of the patients who suffered postoperative stroke were very high.

Article in Japanese | WPRIM | ID: wpr-366118


Patients with an aortic aneurysm have a high incidence of coronary artery disease. Percutaneous transluminal coronary angioplasty (PTCA) has not established as a safe, effective procedure in patients with an aortic aneurysm. From November 1987 to November 1993, 5 patients underwent PTCA prior to aortic aneurysm repair. Three patients had abdominal aortic aneurysm and 2 had thoracic aortic aneurysm. There were 4 men and 1 woman whose mean age was 68 years (range 63 to 76). In 4 patients primary success of PTCA was achieved. The remaining 1 patient failed PTCA and underwent emergency coronary bypass surgery. Early mortality was 0%. All five were followed up after aneurysm repair for a mean of 28 months (range 12-66 months). There was no myocardial infarction or death. These results indicate that PTCA prior to aneurysm repair is a relatively safe and effective procedure, particularly in elderly patients with an aortic aneurysm.