The purpose of this study was to investigate whether a two-week high-intensity treadmill exercise improves arterial stiffness. Twenty-six young healthy subjects completed a 30-min treadmill exercise at 70% of their peak oxygen uptake 5 days/week. We measured pressure-strain elastic modulus (Ep) and stiffness parameter (β) of the left common carotid artery at rest with ultrasonic diagnostic equipment before and after a two-week exercise. After the exercise, the pulse pressure did not change significantly. However, pulsatile changes in diameter increased significantly, which decreased Ep and β significantly.
We report herein a retrospective study which included 21 consecutive patients who were diagnosed with isolated superior mesenteric artery (SMA) dissection at our hospital between 2006 and 2014. False lumen was thrombosed in 15 patients (71%). One patient underwent endovascular treatment because of persistent abdominal angina at 4 months after the onset. The other patients including three, whose true lumen of SMA were completely occluded by thrombosed false lumen, were successfully treated with conservative therapy. If occlusion of true lumen of the SMA is located closely to the ostium and is only short segment, collateral flow to distal SMA and early spontaneous recanalization of occluded segment will attribute to a successful conservative treatment.
A 27-year-old woman noticed a tumor in her right forearm without an inducement. Her tumor was egg-sized, pulsatile, movable, and well defined in the proximal part of her forearm. Ultrasonography showed hypoechoic to isoechoic mass around her brachial artery, and a part of the mass protruded into the arterial lumen. The tumor and the part of her brachial artery were resected and replaced with reversed great saphenous vein graft. Pathological examination revealed that it was an epithelioid hemangioma. In the third postoperative year, her graft was patent and no recurrence was observed.