Pharmacotherapy for hypertension in the elderly

Area of Science:

• Gerontology
• Cardiovascular Medicine
• Pharmacology

Background:

• Hypertension is a prevalent condition in the elderly, increasing the risk of cardiovascular events.
• Long-term data on the efficacy and safety of antihypertensive drug therapy in older populations is crucial.

Purpose of the Study:

• To quantify the long-term effects of antihypertensive drug therapy on morbidity and mortality in elderly individuals.
• To characterize co-morbid risk profiles of participants in relevant clinical trials.

Main Methods:

• A systematic review and meta-analysis of randomized controlled trials (RCTs) of at least one year duration in hypertensive elders (≥60 years).
• Data abstraction by two independent reviewers on morbidity, mortality, and trial characteristics.
• Searches included major databases (MEDLINE, Cochrane Library) and expert consultations.

Main Results:

• Fifteen RCTs involving 21,908 elderly subjects were analyzed.
• Antihypertensive drug therapy, particularly with diuretics or beta-blockers, significantly reduced cardiovascular morbidity and mortality (e.g., cardiovascular morbidity/mortality reduced from 177 to 126 per 1000 over 5 years).
• Total mortality was also reduced; however, data on dropouts due to side effects varied widely and were often unreported.

Conclusions:

• RCTs demonstrate that treating hypertension in healthy older individuals is highly effective.
• Low-dose diuretics or beta-blockers show clear benefits for systolic or diastolic hypertension in individuals aged 60-70.
• Differential treatment effects based on specific risk factors or co-morbidities could not be determined from the available trial data.