Abstract
Currently 4 classes of antihypertensive drugs - diuretics, beta-blockers, calcium channel blockers and angiotensin-converting enzyme (ACE) inhibitors - are most commonly used to treat hypertensive patients. Each class of drug has a distinctive cardiovascular pharmacodynamic profile and even within classes there exist agents with slightly different properties. The effects of the various drug classes on the heart and peripheral circulation, on the kidney and electrolyte metabolism, on the brain and on the renin-angiotensin system are now reasonably well described. Knowledge and understanding of these different cardiovascular effects are extremely important in order to adapt treatment to the needs of an individual patient. Furthermore, when combination therapy becomes necessary, the different cardiovascular aspects of the various drugs can be used to enhance antihypertensive efficacy and to attenuate adverse effects of separate compounds.
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