Differences in the reduction of blood pressure according to drug administration at activity hours or rest hours

Paola Helena Ponte Márquez, Maria José Solé, Juan Antonio Arroyo, Laia Matas, Maria Teresa Benet, Àlex Roca-Cusachs

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© 2013 Elsevier España, S.L.U. All rights reserved. Background and objective In this study, 123 recordings of blood pressure (BP) obtained by ambulatory BP monitoring were analyzed. These recordings were measured in 2011 in patients from a Spanish tertiary university hospital. All participating patients were treated with 2, 3 or 4 anti-hypertensive drugs. The main aim of this study was to determine differences in BP control, if any, depending on the medication schedule. Thus, BP levels were studied at 3 periods of the day: activity hours, rest hours and 24 h. Patients and method We compared subjects taking all anti-hypertensive agents during the day (n = 70, group 1) with those taking at least one at night (n = 53, group 2). Results Significant differences were found on diastolic BP, where group 2 patients had lower levels at activity, 24 h periods and sleep-time. Even if it was not statistically significant, lower levels of systolic BP from group 2 were also observed at activity and 24 h periods as well as lower levels of systolic, diastolic and mean BP at rest hours periods. There were also significant group differences in relation to the number of prescribed agents (with the mean being higher for group 2) and the type of agent (beta-blockers and calcium antagonists were more prevalent in group 2). Nevertheless, the multivariate regression analysis done taking into account these variables did not change the observed statistical significance. Conclusion The administration of anti-hypertensive drugs at night could be associated with lower BP levels.
Idioma originalEnglish
Pàgines (de-a)51-54
RevistaMedicina Clinica
Estat de la publicacióPublicada - 1 de gen. 2015


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