Abstract

Hypertension, if not appropriately treated, is associated with life-threatening complications. This study evaluated antihypertensive prescribing patterns in older adults (≥ 65years) versus young adults based on the current guidelines with an emphasis on the use of dual single-pill combinations (SPCs). A nationwide audit of 8746 primary care prescriptions of hypertensive patients with comorbidities in Bahrain was performed. Antihypertensive combination therapy was prescribed more often to older (77.1%) than young adults (68.6%; P < 0.0001) whereas SPCs were under-used (57.6% vs. 69.4%; P < 0.0001). Recommended dual SPCs, without/with a combination of a free-dose complementary antihypertensive agent, were significantly less often prescribed for the older adult as compared to young adult adults (45.1% vs. 62.99% and 35.97% vs. 46.72%; P < 0.0001), respectively. Unacceptable two- and three-drug combinations (including those with limited clinical evidence and unacceptable ones) were prescribed more often to older adults rather than to young ones (20.06% vs. 12.6%; and 56.5% vs. 46.8%; P < 0.0001), respectively. In both age groups, the top-three antihypertensive classes prescribed as monotherapy were angiotensin-converting enzyme inhibitors, angiotensin receptor blockers, and β blockers. The updated guidelines for hypertension treatment in older adults have had a limited impact on primary care practice in Bahrain. In both age groups, there was a high positive correlation between the number of antihypertensive drugs prescribed and prescribing unacceptable combinations. Unacceptable combinations comprising SPC-related antihypertensive therapy duplication were more common than those reported elsewhere. Introducing approved triple SPCs may discourage prescribing unacceptable antihypertensive drugs and their combinations that lack robust evidence.

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