alexa Variability in arterial diameter and compliance: compliance modulation reserve.


Journal of Biosensors & Bioelectronics

Author(s): Trazzi S, Omboni S, Santucciu C, Parati G, Mancia G

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Abstract BACKGROUND: Some antihypertensive drugs are known to increase arterial compliance in hypertensives; how far compliance can be increased is unknown. DESIGN: We studied eight mildly hypertensive patients to determine how far radial artery compliance can be acutely increased, i.e. the extent of the compliance modulation reserve. METHODS: We evaluated radial artery compliance by a new technique, assessing it throughout the cardiac cycle before and after the intra-arterial infusion of a vasodilator agent (papaverine). RESULTS: Before papaverine, compliance decreased progressively through diastolic to systolic blood pressure values. This was the case also during the papaverine infusion. However, over the full systolo-diastolic pressure range, compliance was increased by about 40\% with papaverine. CONCLUSIONS: In hypertensive subjects radial artery compliance can be markedly increased on a acute basis, indicating that those antihypertensive drugs that improve compliance have a considerable reserve to act upon.
This article was published in J Hypertens Suppl and referenced in Journal of Biosensors & Bioelectronics

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