Kosmala, W and Marwick, TH and Stanton, T and Abhayaratna, WP and Stowasser, M and Sharman, JE, Guiding hypertension management using central blood pressure: effect of medication withdrawal on left ventricular function, American Journal of Hypertension, 29, (3) pp. 319-325. ISSN 1941-7225 (2015) [Refereed Article]
© American Journal of Hypertension, Ltd 2015. All rights reserved.
Background: Central blood pressure (BP) is an acknowledged contributor to end-organ damage and independent determinant of prognosis. Primary analysis from the BPGUIDE study demonstrated no detriment on left ventricular (LV) structure from central BP-guided hypertension management, despite significant medication withdrawal. However, the effect of this on LV function has not been investigated. In this study, we sought to investigate the impact of central BP-guided hypertension management on LV systolic and diastolic performance.
Methods: A total of 286 enrollees with uncomplicated hypertension were randomized to therapeutic decisions guided by best-practice usual care (UC) or, in addition, by central BP intervention (CBP) for 12 months. Each participant underwent baseline and follow-up 2-dimensional echocardiography, with assessment undertaken by an expert blinded to participant allocation.
Results: Antihypertensive medication quantity remained unchanged for UC but significantly decreased with intervention. However, no significant between-group differences were noted for changes during follow-up in both brachial and central BP, as well as other central hemodynamic parameters: augmentation index and augmented pressure. Similarly, there were no differences between groups in parameters of LV diastolic function: tissue e′ velocity (∆UC vs. ∆CBP; P = 0.27) and E/e′ ratio (∆UC vs. ∆CBP; P = 0.60), and systolic parameters: LV longitudinal strain (∆UC vs. ∆CBP; P = 0.55), circumferential strain (∆UC vs. ∆CBP; P = 0.79), and ejection fraction (∆UC vs. ∆CBP; P = 0.15).
Conclusions: Hypertension management guided by central BP, resulting in significant withdrawal of medication to maintain appropriate BP control, had no adverse effect on LV systolic or diastolic function.
|Item Type:||Refereed Article|
|Keywords:||blood pressure, clinical trial, echocardiography, essential hypertension, hypertension, left ventricular function, management|
|Research Division:||Biomedical and Clinical Sciences|
|Research Group:||Cardiovascular medicine and haematology|
|Research Field:||Cardiology (incl. cardiovascular diseases)|
|Objective Group:||Clinical health|
|Objective Field:||Clinical health not elsewhere classified|
|UTAS Author:||Kosmala, W (Professor Wojciech Kosmala)|
|UTAS Author:||Marwick, TH (Professor Tom Marwick)|
|UTAS Author:||Sharman, JE (Professor James Sharman)|
|Web of Science® Times Cited:||5|
|Deposited By:||Menzies Institute for Medical Research|
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