Gianluca Testa1, Alice Ceccofiglio2,3, Chiara Mussi4, Giuseppe Bellelli5,6,7, Franco Nicosia8, Mario Bo9, Daniela Riccio10, Francesco Curcio1, Anna Maria Martone11, Gabriele Noro12, Francesco Landi11, Andrea Ungar2,3, Pasquale Abete1. 1. Department of Translational Medical Sciences, University of Naples, Federico II, Naples, Italy. 2. Syncope Unit, Geriatric Cardiology and Medicine, University of Florence, Florence, Italy. 3. Azienda Ospedaliero Universitaria Careggi, Florence, Italy. 4. Centro di Valutazione e Ricerca Gerontologica, University of Modena and Reggio Emilia, Modena, Italy. 5. Department of Health Sciences, University of Milano Bicocca, Milan, Italy. 6. Acute Geriatric Unit, San Gerardo Hospital, Monza, Italy. 7. Milan Center for Neuroscience, Milan, Italy. 8. Medicine and Geriatric Unit, Spedali Civili of Brescia, Brescia, Italy. 9. SCDU Geriatria e Malattie Metaboliche dell'Osso, Città della Salute e della Scienza-Molinette-Torino, Turin, Italy. 10. Geriatric Department, SS. Trinità Hospital, Cagliari, Italy. 11. Department of Geriatrics, Neurosciences and Orthopedics, Catholic University of the Sacred Heart, Rome, ITaly. 12. Geriatric Unit, Santa Chiara Hospital, Trento, Italy.
Abstract
OBJECTIVES: To determine whether hypotensive drugs may play a pivotal role in inducing orthostatic hypotension (OH)-related syncope. DESIGN: Prospective, observational, multicenter study. SETTING: Acute care wards, syncope units, and centers for the diagnosis of dementia. PARTICIPANTS: Individuals aged 65 and older with a diagnosis of dementia and 1 or more episodes of transient loss of consciousness of a suspected syncopal nature or unexplained falls during the previous 3 months MEASUREMENTS: Blood pressure was measured in the supine position and in the orthostatic position after 1 and 3 minutes. OH was defined as a decrease in systolic blood pressure of 20 mmHg or more and in diastolic blood pressure of 10 mmHg or more within 3 minutes of standing. Univariate and multivariate analyses were used to evaluate associations between hypotensive drugs and their combinations with OH-related syncope. RESULTS: The mean age of the study population (n=522; women, n=324) was 83.5±6.1, and the most frequent comorbidity was arterial hypertension (74.5%); 324 (67.8%) participants had had a syncopal fall and 168 (32.2%) a nonsyncopal fall. The mean number of hypotensive drugs administered (2.9±3.1) did not differ between the two groups. Syncopal falls was OH-related in 170 participants (48.0%). OH-related syncopal falls were more frequent in participants receiving nitrates (15.3% vs 9.8%, p=.06), alpha-blockers (16.5% vs 9.8%, p=.04), or combinations of angiotensin-converting enzyme inhibitors (ACE-Is) and diuretics (20.6% vs 13.0%, p=.04), alpha-blockers and diuretics (8.2% vs 3.3%, p=0.036), and ACE-Is and nitrates (8.2% vs 3.3%, p=.10). Multivariate analysis confirmed a greater risk of OH-related syncopal fall for nitrates (relative risk (RR)=1.77), combinations of ACE-Is and diuretics (RR=1.66), and combinations of ACE-Is and nitrates (RR=2.32). CONCLUSION: In older adults with dementia, OH-related syncopal falls are significantly related to treatment with nitrates, combinations of ACE-Is and diuretics, and combinations of ACE-Is and nitrates.
OBJECTIVES: To determine whether hypotensive drugs may play a pivotal role in inducing orthostatic hypotension (OH)-related syncope. DESIGN: Prospective, observational, multicenter study. SETTING: Acute care wards, syncope units, and centers for the diagnosis of dementia. PARTICIPANTS: Individuals aged 65 and older with a diagnosis of dementia and 1 or more episodes of transient loss of consciousness of a suspected syncopal nature or unexplained falls during the previous 3 months MEASUREMENTS: Blood pressure was measured in the supine position and in the orthostatic position after 1 and 3 minutes. OH was defined as a decrease in systolic blood pressure of 20 mmHg or more and in diastolic blood pressure of 10 mmHg or more within 3 minutes of standing. Univariate and multivariate analyses were used to evaluate associations between hypotensive drugs and their combinations with OH-related syncope. RESULTS: The mean age of the study population (n=522; women, n=324) was 83.5±6.1, and the most frequent comorbidity was arterial hypertension (74.5%); 324 (67.8%) participants had had a syncopal fall and 168 (32.2%) a nonsyncopal fall. The mean number of hypotensive drugs administered (2.9±3.1) did not differ between the two groups. Syncopal falls was OH-related in 170 participants (48.0%). OH-related syncopal falls were more frequent in participants receiving nitrates (15.3% vs 9.8%, p=.06), alpha-blockers (16.5% vs 9.8%, p=.04), or combinations of angiotensin-converting enzyme inhibitors (ACE-Is) and diuretics (20.6% vs 13.0%, p=.04), alpha-blockers and diuretics (8.2% vs 3.3%, p=0.036), and ACE-Is and nitrates (8.2% vs 3.3%, p=.10). Multivariate analysis confirmed a greater risk of OH-related syncopal fall for nitrates (relative risk (RR)=1.77), combinations of ACE-Is and diuretics (RR=1.66), and combinations of ACE-Is and nitrates (RR=2.32). CONCLUSION: In older adults with dementia, OH-related syncopal falls are significantly related to treatment with nitrates, combinations of ACE-Is and diuretics, and combinations of ACE-Is and nitrates.
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