• Wolfgang Grotz, Nikolaus Büchner, Thomas Wessendorf, Helmut Teschler, Ludger Grote, Heinrich F Becker, and Lars Christian Rump.
• Klinik für Innere Medizin II, Alfried Krupp Krankenhaus Essen, Essen, Germany. wolfgang.grotz@krupp-krankenhaus.de
• Med Klin. 2006 Nov 15;101(11):880-5.

AbstractObstructive sleep apnea and arterial hypertension are frequent diseases, but they are also often overlooked. There is a causal relationship of sleep apnea and hypertension. Undiagnosed sleep apnea is probably the most important reason for "essential" hypertension. It is important to identify these patients. All hypertensive patients should be asked for snoring, breathing arrest and daytime sleepiness, neck circumference should be measured, and an ambulant sleep apnea monitoring should be performed, if necessary. Especially patients with refractory hypertension or non-dippers should be screened for sleep apnea and patients with sleep apnea should be examined for arterial hypertension. Continuous positive airway pressure (CPAP) can effectively lower blood pressure in the hypertensive sleep apnea patient. This is especially true for the obstructive sleep apnea patient with refractory hypertension. CPAP therapy is probably the best therapy for sleep apnea-induced nocturnal blood pressure rises.

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