Why the study?
What is the prevalence of secondary causes of hypertension, particularly obstructive sleep apnea, in patients with resistant hypertension?
What is the prevalence of secondary causes of hypertension, particularly obstructive sleep apnea, in patients with resistant hypertension?
Obstructive sleep apnea is the most frequent secondary cause of resistant hypertension, affecting 64% of patients, and is strongly predicted by age >50, large neck circumference, and snoring.
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OSA screening may merit consideration in resistant hypertension with these predictors; leaves open causal effects on BP control.
Pedrosa et al. (2011) studied this question.
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