The objective of our study was: (1) to compare the influence of moderate exercise on circulatory afterresponse in mildly hypertensive (n = 8) and normotensive male subjects (n = 9); (2) to examine the circulatory response to 3-min hyperoxic inactivation of arterial chemoreceptors at rest and during postexercise period in both groups. Hypertensive men (HTS) with a systolic blood pressure (SBP) 148 ؎ 5 mm Hg, diastolic blood pressure (DBP) 92.4 ؎ 4 mm Hg; and normotensive men (NTS), with a SBP 126 ؎ 3 mm Hg, DBP 75.6 ؎ 1.3 mm Hg, were submitted to 20-min of moderate exercise on a cycloergometer (up to the level of 55% of each subject's resting heart rate reserve). Finger arterial BP was recorded continuously with Finapres, impedance reography was used for recording stroke volume, cardiac output and arm blood flow. In HTS a significant decrease in SBP by 14.5 ؎ 3.4 mm Hg, DBP by 8.9 ؎ 1.9
The diagnosis of Takayasu's arteritis is often clinically dicult. The ultrasound examination of the arteries originating from the aortic arch, especially with the assessment of intima media thickness of common carotid arteries, is easily available and can add valuable information. Eighteen patients, 16 women and 2 men, aged 11±62, with established diagnosis of Takayasu's arteritis and 17 age-and sex-matched controls were examined using duplex color doppler ultrasound. Thē ow in subclavian, common, internal, external carotid and vertebral arteries was visualized. The mean intima media thickness of the common carotid arteries proximal to the bulb (CCA) and in the carotid bulb were measured in dierent planes, o-line from digitized images by a single reader, helped by a computerized system for averaging and analysis. A total occlusion of left common carotid arteries in three patients and right CCA in one patient was detected.
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