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Long-term Protection in At-risk Hypertensive Patients - A Role for Nifedipine GITS?

Hypertensive patients who are at high risk of developing cardiovascular (CV) complications have become the focus of modern treatment guidelines. The choice of antihypertensive therapies in these patients should be evidence-based: in particular, there should be evidence of a beneficial impact on CV events in addition to blood pressure-lowering effects. The International Nifedipine GITS study: Intervention as a Goal in Hypertension Treatment (INSIGHT) is the first, large, randomized, double-blind study undertaken exclusively in high-risk hypertensive patients, with CV events as a prospectively defined primary end-point. The choice of a diuretic (co-amilozide) as a comparator reflects the fact that this group of antihypertensive drugs has been shown to reduce CV events in high-risk hypertensive patients. Nifedipine, administered in a long-acting gastrointestinal-transport-system (GITS) formulation, and coamilozide were equally effective in preventing overall CV or cerebrovascular complications. This finding extended to the subgroup of patients with diabetes at baseline. Substudies to INSIGHT showed that, compared with co-amilozide, nifedipine GITS was significantly more effective at preventing an increase in intima-media thickness in the carotid artery and significantly slowed the progression of coronary calcification. The results from INSIGHT support incorporating nifedipine GITS in the management of high-risk hypertensive patients to prevent atherosclerosis-related illness and death.