title: Evaluation and treatment of hypertension.
abstract: Hypertension is a significant and prevalent risk factor for the development of cardiovascular disease and target organ damage. The urgency of treatment of high blood pressure depends on the level of blood pressure elevation and the presence of coexistent risk factors for cardiovascular disease. Likewise, the level to which blood pressure is reduced is not restricted to the definition of high blood pressure but instead depends on the underlying disease. Diabetes and renal insufficiency, for example, require blood pressure goals below those that are traditionally defined. In the absence of contraindications, beta-blockers and diuretics are still recommended as first-line agents for treatment of uncomplicated hypertension. Calcium channel antagonists also may reduce mortality. In patients with diabetes, ACE inhibitors are effective first-line agents in type 1 and type 2 diabetic patients who are hypertensive or have microalbuminuria. ACE inhibitors may be beneficial in patients with nondiabetic renal insufficiency as well. Calcium channel antagonists may have some effect in retarding progression of diabetic nephropathy although a recent trial found a higher incidence of death as a secondary endpoint in hypertensive diabetic patients who were treated with calcium channel antagonists. Beta-blockers seem to be safe and well tolerated in patients with mild to moderate intermittent claudication, although patients with rest pain or limb ischemia have not been studied. Beta-blockers should not be used in patients with asthma. Dihydropyridine calcium channel antagonists are the preferred treatment of hypertension in patients with Raynaud's but should be avoided in patients with severe gastroesophageal reflux disease. NSAIDs, particularly piroxicam and indomethacin, raise mean blood pressure by approximately 5 mm Hg, enough to consider a change of either NSAID or antihypertensive to one that is not as affected by NSAIDs. Cyclosporine A can induce hypertension by its vasoconstrictive effects, particularly on the kidney. Calcium channel antagonists may antagonize this vasoconstriction while allowing the clinician to reduce the dose of cyclosporine A required to achieve its immunosuppressive effect.
authors.affiliation: Department of Medicine, University of Pennsylvania School of Medicine, Philadelphia, USA.
authors.forename: C M
authors.initials: CM
authors.lastname: Chou
mesh_terms: D000319:Adrenergic beta-Antagonists / Q000627:therapeutic use; D000806:Angiotensin-Converting Enzyme Inhibitors / Q000627:therapeutic use; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000494:pharmacology; D002121:Calcium Channel Blockers / Q000627:therapeutic use; D002318:Cardiovascular Diseases / Q000209:etiology; D004232:Diuretics / Q000627:therapeutic use; D006801:Humans; D006973:Hypertension / Q000150:complications / Q000175:diagnosis / Q000188:drug therapy*; D012216:Rheumatic Diseases / Q000150:complications* / Q000188:drug therapy; D012307:Risk Factors
chemical_list: D000319:Adrenergic beta-Antagonists; D000806:Angiotensin-Converting Enzyme Inhibitors; D000894:Anti-Inflammatory Agents, Non-Steroidal; D002121:Calcium Channel Blockers; D004232:Diuretics