{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,22]],"date-time":"2026-09-22T17:47:39Z","timestamp":1790099259474,"version":"4.0.1"},"reference-count":27,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"4","content-domain":{"domain":["www.ahajournals.org"],"crossmark-restriction":true},"short-container-title":["Circulation"],"published-print":{"date-parts":[[2000,2]]},"abstract":"<jats:p>\n            <jats:italic>Background<\/jats:italic>\n            \u2014Patients with heart failure and systolic dysfunction may develop disordered breathing during sleep. Repeated episodes of apnea and hypopnea may result in desaturation and arousals, which could adversely affect left ventricular function. The purpose of this study was to determine the short-term effects of continuous positive airway pressure (CPAP) on sleep-disordered breathing and its consequences in heart failure patients.\n          <\/jats:p>\n          <jats:p>\n            <jats:italic>Methods and Results<\/jats:italic>\n            \u2014The author prospectively studied 29 male patients whose initial polysomnograms showed 15 or more episodes of apnea and hypopnea per hour (apnea-hypopnea index, AHI). Twenty-one patients had predominately central and 8 patients obstructive sleep apnea. All were treated with CPAP during the subsequent night. In 16 patients, CPAP resulted in virtual elimination of disordered breathing. In these patients, the mean AHI (36\u00b112 [SD] versus 4\u00b13 per hour,\n            <jats:italic>P<\/jats:italic>\n            =0.0001), arousal index due to disordered breathing (16\u00b19 versus 2\u00b12 per hour,\n            <jats:italic>P<\/jats:italic>\n            =0.0001), and percent of total sleep time below saturation of 90% (20\u00b123% to 0.3\u00b10.7%,\n            <jats:italic>P<\/jats:italic>\n            =0.0001) decreased, and lowest saturation (76\u00b18% versus 90\u00b13%,\n            <jats:italic>P<\/jats:italic>\n            =0.0001) increased with CPAP. In 13 patients who did not respond to CPAP, these values did not change significantly. In patients whose sleep apnea responded to CPAP, the number of hourly episodes of nocturnal premature ventricular contractions (66\u00b1117 versus 18\u00b120,\n            <jats:italic>P<\/jats:italic>\n            =0.055) and couplets (3.2\u00b16 versus 0.2\u00b10.21,\n            <jats:italic>P<\/jats:italic>\n            =0.031) decreased. In contrast, in patients whose sleep apnea did not respond to CPAP, ventricular arrhythmias did not change significantly.\n          <\/jats:p>\n          <jats:p>\n            <jats:italic>Conclusions<\/jats:italic>\n            \u2014In 55% of patients with heart failure and sleep apnea, first-night nasal CPAP eliminates disordered breathing and reduces ventricular irritability.\n          <\/jats:p>","DOI":"10.1161\/01.cir.101.4.392","type":"journal-article","created":{"date-parts":[[2012,6,12]],"date-time":"2012-06-12T00:42:29Z","timestamp":1339461749000},"page":"392-397","update-policy":"https:\/\/doi.org\/10.1161\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":257,"title":["Effects of Continuous Positive Airway Pressure on Sleep Apnea and Ventricular Irritability in Patients With Heart Failure"],"prefix":"10.1161","volume":"101","author":[{"given":"S.","family":"Javaheri","sequence":"first","affiliation":[{"name":"From the Sleep Disorders Laboratory, Department of Veterans Affairs Medical Center, and Department of Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio."}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"276","reference":[{"key":"e_1_3_2_1_2","doi-asserted-by":"publisher","DOI":"10.1161\/circ.97.21.2154"},{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.1093\/sleep\/16.6.513"},{"key":"e_1_3_2_3_2","doi-asserted-by":"publisher","DOI":"10.1016\/S1071-9164(96)80045-5"},{"key":"e_1_3_2_4_2","first-page":"S229","volume":"19","year":"1996","unstructured":"Javaheri S. 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