An international trial looking at the benefits of giving blood-pressure lowering medication to elderly patients has stopped early, after researchers observed significant reductions in overall mortality in those receiving treatment.
The 3,845 patient Hypertension in the Very Elderly Trial (HYVET) is the largest ever clinical trial to look at the effects of lowering blood pressure solely in those aged 80 and over. Preliminary results of the trial, which is coordinated by scientists from Imperial College London, suggest that lowering blood pressure significantly reduces both stroke and mortality in the over-80s.
A number of earlier trials had demonstrated that reducing blood pressure in the under-80s reduces stroke and cardiovascular events. However, previous smaller and inconclusive studies also suggested that whilst lowering blood pressure in those aged 80 or over reduced the number of strokes, it did not reduce, and even increased, total mortality.
Patients with high blood pressure from across the world were randomised for the double-blind, placebo-controlled trial, which began in 2001. Patients were given either the placebo or a low dose diuretic (indapamide 1.5mg SR), and an additional ACE inhibitor (perindopril), in tablet form once a day.
Emeritus Professor Chris Bulpitt, HYVET Principal Investigator from the
Care of the Elderly Department at Imperial College London, said: "It was
not clear prior to our study whether the over-80s would benefit from
blood pressure lowering medication in the same way as younger people.
Our results are great news for people in this age group because they
suggest that where they have high blood pressure, such
Contact: Laura Gallagher
Imperial College London