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- W2126745472 abstract "Abstract —To elucidate the relations between arterial hypertrophy and compliance in hypertension, we studied 205 unmedicated hypertensive patients (129 men and 76 women) and 82 normotensive adults (56 men and 26 women) from an employed population by carotid ultrasound, noninvasive applanation tonometry, and echocardiography. Carotid midwall strain and circumferential stress were calculated at end diastole and peak systole. The relations of luminal and midwall strain to the increment in circumferential stress from end diastole to peak systole (Δcarotid stress in normal subjects) were used to calculate ratios of observed/predicted carotid luminal and midwall strain. Mean stress-corrected luminal strain (82±26%) and midwall strain (78±23%) were lower (both P <0.001) in hypertensive patients than in normal adults. Stress-corrected luminal strain identified 14% of hypertensive patients with low arterial compliance, while stress-corrected midwall strain was low in 18% of patients. Patients with subnormal carotid midwall strain were older (61±12 versus 54±12 years, P <0.01) and had larger carotid diameters (6.6±0.8 versus 5.7±0.8 mm, P =0.002) and higher brachial pulse pressures (71±25 versus 63±17 mm Hg, P <0.05) than other patients. Patients with arterial hypertrophy had lower stress-corrected midwall strain than those without hypertrophy (70±24% versus 79±23%, P =0.05), whereas no difference was observed in stress-corrected luminal strain ( P =0.40). Stress-corrected midwall strain tended to be lower in patients with discrete atherosclerotic plaques than in those without (74±20% versus 79±24%, P =0.15). Compared with patients with normal left ventricular geometry, those with concentric hypertrophy had larger carotid diameters (6.6±0.7 versus 5.8±0.9 mm, P <0.05) and lower stress-corrected luminal strain (62±11% versus 85±25%, P <0.05) and midwall strain (59±10% versus 81±22%, P <0.05). Therefore, stress-corrected midwall strain identifies patients with reduced arterial compliance, increased arterial wall thickness, and abnormal left ventricular geometry better than conventional measures based on arterial lumen diameters." @default.
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- W2126745472 date "1999-03-01" @default.
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- W2126745472 title "Assessment of Arterial Compliance by Carotid Midwall Strain-Stress Relation in Hypertension" @default.
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- W2126745472 doi "https://doi.org/10.1161/01.hyp.33.3.793" @default.
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