• 1. Geriatric Department of Respiration, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P. R. China;
  • 2. Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P. R. China;
ZONG Feng, Email: arthurjulia@126.com
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Objective To observes the postoperative transformation of subjective and objective sleep quality and related influencing factors in patients with rheumatic valvular heart disease (RVHD) who were found with central sleep apnea (CSA) after cardiac valve replacement.Methods A total of 262 patients undergoing cardiac valve replacement were screened for CSA by overnight polysomnography and 21 patients with CSA were enrolled and followed up successfully in the 3th, 6th and 12th month of postoperation from April 2010 to January 2013. The Pittsburgh Sleep Quality Index, Epworth Sleepiness, polysomnography and cardiac function were evaluated in preoperation and postoperation (in the 3th, 6th and 12th month).Results New York Heart Association class [preoperation and postoperation: (3.7±0.5), (2.3±0.6), (1.7±0.6), (1.6±0.7), F=81.124, P<0.05] continuously decreased, left ventricular ejection fraction [preoperation and postoperation: (58.5±6.8)%, (60.0±7.4)%, (60.9±5.6)%, (64.4±4.0)%, F=7.182, P<0.05] steadily increased, six-minute walk distance [preoperation and postoperation: (271.5±76.6), (422.1±71.9), (445.1±56.2), (454.5± 63.5) m, F=67.134, P<0.05] constantly increased. During postoperative follow-up, sleep apnea-hypopnea index [preoperation and postoperation: (26.2±13.4), (12.0±11.5), (8.6±7.5), (7.4±5.5)/h, F=20.548, P<0.05, central sleep apnea index [preoperation and postoperation: (19.6±10.3), (0.5±1.5), (0.3±1.3), (0.2±0.7)/h, F=72.926, P<0.05] and oxygen desaturation index [preoperation and postoperation: (20.1±16.6), (10.8±9.5), (8.5±7.2), (6.1±5.1)/h, F=9.646, P<0.05] sustained improved. Aroual index [preoperation and postoperation: (23.1±12.1), (2.7±3.8), (3.5±4.8), (2.2±2.1)/h, F=58.370, P<0.05] presented overall downward trend. Pittsburgh Sleep Quality Index scale [preoperation and postoperation: (11.1±3.2), (8.2±3.3), (6.0±3.8), (4.4±2.5), F=27.670, P<0.05] were constantly improved. Epworth Sleepiness scale [preoperation and postoperation: (13.3±5.7), (6.9±4.5), (8.2±4.8), (6.1±3.7), F=15.994, P<0.05] showed overall reduction.Conclusion The sleep quality of patients with RVHD and CSA is improved after cardiac valve replacement, of which the trend is in keep with postoperative recovery of cardiac function.

Citation: QI Daoda, DING Ning, ZHANG Xilong, ZONG Feng. Cardiac valve replacement improves sleep quality in patients with rheumatic valvular heart disease and central sleep apnea. Chinese Journal of Respiratory and Critical Care Medicine, 2019, 18(2): 144-149. doi: 10.7507/1671-6205.201804034 Copy

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