Hypertension in the elderly.

In those aged 65-85 years, the major causes of death and disability are cardiovascular diseases (myocardial infarction, sudden death and stroke). Clinical trials in elderly patients have demonstrated unequivocally that effective blood pressure reduction in hypertensive patients up to the age of 85 years significantly reduces this mortality and morbidity. The larger trials are referred to as the SHEP trial (chlorthalidone), the STOP trial (beta-blockers and/or diuretics), the MRC Elderly Trial (atenolol or diuretic) and the SYST-EUR trial (nitrendipine). Patients entered into clinical trials are a selected population; those with serious coexisting diseases and with a poor prognosis are usually excluded. For this reason one has to carefully consider whether the results of these trials would provide the best treatment for the next patient the doctor sees who would probably not meet the entry criteria. Elderly hypertensives may fall into one of three categories. The sick elderly with serious disorders such as cancer or dementia have a poor quality of life and a bad prognosis. They should not be given antihypertensive drugs. The medically complicated elderly have serious disorders, which usually require drug therapy and the medical condition and the drugs used in treatment may complicate the choice of antihypertensive drugs. The potential adverse effects of adding another form of drug treatment may outweigh the potential benefits. The fit elderly do derive considerable benefit from adequate blood pressure control and need an effective, well-tolerated antihypertensive drug. The choice of drug to control blood pressure in the elderly is difficult. An effective, well-tolerated antihypertensive with little potential to interact with coexisting disorders and other drugs is needed.