Key result
Twice-daily administration of perindopril or losartan was significantly more effective than once-daily evening administration in eliminating the non-dipper phenomenon in hypertensive patients.
Why the study?
Does twice-daily administration of perindopril or losartan improve the diurnal index compared to once-daily evening administration in untreated primary hypertensive patients with non-dipper phenomenon?
Does twice-daily administration of perindopril or losartan improve the diurnal index compared to once-daily evening administration in untreated primary hypertensive patients with non-dipper phenomenon?
Twice-daily dosing of perindopril or losartan is more effective than once-daily evening dosing at eliminating the non-dipper phenomenon in hypertensive patients.
Answers are grounded in this paper and cite their sources.
May support twice-daily dosing in non-dippers; leaves open confirmation by RCTs on outcomes.
BACKGROUND/AIMS: Little is known about the effect of twice daily administration of same dose of ACE inhibitor and ARB on the diurnal/nocturnal blood pressure (BP) ratio. We aimed to assess the effect of two widely used long-acting drugs: perindopril and losartan in the treatment of hypertension comparing the once-daily (evening) vs. twice-daily (morning and evening) administration with the same daily doses. METHODS: Untreated primary hypertensive patients without complaints (a total of 164: 65 men, 99 women, 55.7 ± 13.7 years of age, 41-41 patients per treated groups) were selected with non-dipper phenomenon, estimated by diurnal index (DI) <10%. The effect of evening (8 mg perindopril or 100 mg losartan) vs morning and evening (4-4 mg perindopril or 50-50 mg losartan) administration was determined on a 14-day treatment by ABPM. RESULTS: The mean BP, the percent time elevation index, and the hyperbaric impact decreased in both drug groups. Significant difference was observed in the DI in the case of twice-daily administration vs once-daily evening dosing. CONCLUSIONS: The twice-daily administration with the same daily dose of perindopril or losartan seems to be more effective compared to the once daily evening administration in eliminating the non-dipper phenomenon. According to some authors the non-dipping phenomenon increases cardiovascular risk, while others are of the opinion that the association of non-dipping with cardiovascular events does not necessarily mean that selective treatment of non-dipping improves cardiovascular outcomes.
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Szauder et al. (2015) studied Untreated primary hypertension with non-dipper phenomenon (n=164). Twice-daily administration of perindopril or losartan vs. Once-daily evening administration (8 mg perindopril or 100 mg losartan) was evaluated on Diurnal index (DI) / elimination of non-dipper phenomenon. Twice-daily administration of perindopril or losartan was significantly more effective than once-daily evening administration in eliminating the non-dipper phenomenon in hypertensive patients.
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