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Blood pressure control in the Hypertension in the Very Elderly Trial (HYVET)
C J Bulpitt1, N S Beckett, R Peters
1Imperial College London, Hammersmith Campus, Care of the Elderly, London, UK.
Insights
Blood pressure control was achieved in over 70% of elderly patients with isolated systolic hypertension (ISH) using a stepped treatment regimen. This regimen significantly reduced strokes, mortality, and heart failure in the elderly population.
Area of Science:
- Gerontology
- Cardiovascular Medicine
- Clinical Pharmacology
Background:
- Hypertension is a prevalent condition in the elderly, increasing the risk of cardiovascular events.
- Effective blood pressure control in individuals over 80 years old is crucial but challenging.
- The Hypertension in the Very Elderly Trial investigated treatment strategies for this demographic.
Purpose of the Study:
- To evaluate blood pressure control in elderly hypertensive patients using a three-step treatment regimen.
- To compare treatment efficacy between patients with combined systolic and diastolic hypertension (SDH) and isolated systolic hypertension (ISH).
- To assess the impact of treatment titration on blood pressure control and clinical outcomes.
Main Methods:
- A placebo-controlled trial involving hypertensive participants aged over 80 years.
- Treatment involved three steps: indapamide, indapamide plus perindopril 2mg, and indapamide plus perindopril 4mg.
- Blood pressure control was assessed at 2 years, distinguishing between SDH and ISH participants.
Main Results:
- Active treatment lowered blood pressure significantly more than placebo in both SDH and ISH groups.
- By 2 years, 62% of SDH and 71% of ISH participants achieved goal systolic blood pressure.
- Blood pressure control was better in ISH than SDH patients, with incremental perindopril doses improving control.
- The treatment regimen led to a 30% reduction in strokes, 21% reduction in total mortality, and 64% reduction in heart failure.
Conclusions:
- A stepped treatment regimen including indapamide and perindopril is effective for blood pressure control in very elderly hypertensive patients.
- Isolated systolic hypertension showed better blood pressure control compared to combined systolic and diastolic hypertension.
- The observed reductions in cardiovascular events and mortality exceeded predictions, highlighting the benefits of treating hypertension in the very elderly.
Abstract:
To report blood pressure control in the Hypertension in the Very Elderly Trial, a placebo-controlled trial of hypertensive (systolic blood pressure (SBP) 160-199 mm Hg, diastolic blood pressure (DBP) <110 mm Hg) participants over the age of 80 years, given treatment in three steps: indapamide slow release 1.5 mg alone, indapamide plus 2 mg perindopril and indapamide plus 4 mg perindopril. The difference in control between participants with combined systolic and diastolic hypertension (SDH, DBP90 mm Hg) and those with isolated systolic hypertension (ISH, DBP<90 mm Hg) is determined together with the effects of increments in the treatment regimen. At 2 years, the active treatment lowered blood pressure by 16.5/6.9 mm Hg more than that on placebo in participants with SDH and by 19.3/4.8 mm Hg more in those with ISH. The 2-year falls in pressure on placebo alone were 13.2/8.5 mm Hg in SDH and 8.2/1.5 mm Hg in ISH participants. With full titration of active treatment, 62% of SDH participants achieved goal SBP (<150 mm Hg) by 2 years and 71% of those with ISH. The corresponding results for DBP control (<80 mm Hg) were 40 and 78%. The addition of active perindopril 2 mg roughly doubled the percentage controlled, as did increasing to 4 from 2 mg. Blood pressure control was good with ISH and better than with SDH. The fall in SBP accounted for the observed 30% reduction in strokes, but the 21% reduction in total mortality and 64% reduction in heart failure were greater than predicted.
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