Fig. (4).
Blood pressure during repetitive OSA-maneuvers: (A) Blood pressure registration in control (Ctr) pigs, (B) pigs with repetitive obstructive respiratory events with applied negative tracheal pressure (NTP) without and (C) with RDN (NTP + RDN). RAAS-signaling components (D and E): Effect of 4 hours of repetitive OSA-maneuvers on (D) plasma renin-activity and (E) plasma aldosterone concentrations. (Hypertension 2013; 62: 767-74.).