Journal
AGING CLINICAL AND EXPERIMENTAL RESEARCH
Volume 26, Issue 1, Pages 33-37Publisher
SPRINGER
DOI: 10.1007/s40520-013-0124-8
Keywords
Unexplained falls; Syncope; Neuroautonomic evaluation
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Objective To evaluate the diagnostic relevance of neuroautonomic evaluation in patients with unexplained falls compared to those with a syncope etiologically unexplained after initial evaluation. Methods patients with unexplained syncope. Each patient underwent supine and upright blood pressure measurement, tilt testing (TT) and carotid sinus massage (CSM). Results Patients with unexplained falls were older (75.3 +/- 11.1 vs. 63.2 +/- 19.2 years, p < 0.001), were more frequently hypertensive (66.1 vs. 47.2 %, p < 0.001) and more frequently prescribed antihypertensive drugs (62.4 vs. 48.7 %, p < 0.001) or benzodiazepines (15.7 vs. 10.6 %, p = 0.01), and in a greater proportion they experienced major traumatic injuries (77.5 vs. 29.6 %, p < 0.001) as a consequence of falls. The TT was less frequently positive in patients with unexplained falls (36 vs. 51.3 %, p < 0.001), whereas a Carotid Sinus Syndrome as suggested by CSM had a similar prevalence in the two groups (14.3 vs. 10.5 %, p = 0.074). Overall, either TT or CSM were positive in 61 % of patients with unexplained falls, and in 64 % of those with syncope (p = 0.346). After matching by age 298 patients with falls (75.3 +/- 11.1 years) and 298 patients with unexplained syncope (75.4 +/- 11.1 years), we found that the positivity prevalence of TT and CSM were similar in the two groups. Conclusions The positivity prevalence of TT and CSM in patients with unexplained falls compared to patients with unexplained syncope is similar. Given its high diagnostic relevance, the neuroautonomic evaluation should be routinely performed in older patients with unexplained falls.
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