Journal
CIRCULATION-CARDIOVASCULAR QUALITY AND OUTCOMES
Volume 9, Issue 3, Pages 222-+Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1161/CIRCOUTCOMES.115.002524
Keywords
accidental falls; aged; antihypertensive agents; geriatrics
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Funding
- National Institutes of Health from the National Heart, Lung, and Blood Institute, Bethesda, MD [K24-HL125704]
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Background-Antihypertensive medication use has been associated with an increased risk of falls in some but not all studies. Few data are available on the short-term risk of falls after antihypertensive medication initiation and intensification. Methods and Results-We examined the association between initiating and intensifying antihypertensive medication and serious fall injuries in a case-crossover study of 90 127 Medicare beneficiaries who were >= 65 years old and had a serious fall injury between July 1, 2007, and December 31, 2012, based on emergency department and inpatient claims. Antihypertensive medication initiation was defined by a prescription fill with no fills in the previous year. Intensification was defined by the addition of a new antihypertensive class, and separately, titration by the addition of a new class or increase in dosage of a current class. Exposures were ascertained for the 15 days before the fall (case period) and six 15-day earlier periods (control periods). Overall, 272, 1508, and 3113 Medicare beneficiaries initiated, added a new class of antihypertensive medication or titrated therapy within 15 days of their serious fall injury. The odds for a serious fall injury was increased during the 15 days after antihypertensive medication initiation (odds ratio, 1.36 [95% confidence interval, 1.19-1.55]), adding a new class (odds ratio, 1.16 [95% confidence interval, 1.10-1.23]), and titration [odds ratio, 1.13 [95% confidence interval, 1.08-1.18]). These associations were attenuated beyond 15 days. Conclusions-Antihypertensive medication initiation and intensification was associated with a short-term, but not long-term, increased risk of serious fall injuries among older adults.
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