[Respiratory sleep disorders in patients with congestive heart failure].
OBJECTIVE
To examine respiration in sleeping patients with congestive heart failure (CHF).


METHODS
Night cardiorespiratory monitoring was made in 30 CHF patients with coronary heart disease (CHD), arterial hypertension and dilated cardiomyopathy. The control group consisted of 16 patients with obstructive sleep apnea and hypopnea (OSAH) free of CHF.


RESULTS
Respiratory sleep disorders were registered in all the examinees. Moderate and severe OSAH occurred more often. CHF patients vs controls had shorter inhalation, expiration, overall duration of the respiratory cycle, higher rate of the respiratory movements. With aggravation of the respiratory disorders in sleeping CHF patients, minute ventilation, respiratory volume and mean inspiratory flow arose. In severe OSAH there was low functional residual lung capacity and high intraalveolar volume in end expiration positive pressure. The above changes may cause fatigue and weakness of the respiratory muscles and alter intracardiac hemodynamics.


CONCLUSIONS
For CHF patients it is recommended to perform CPAP-therapy in sleep.
Voronin
I M
IM
Belov
A M
AM
Chuchalin
A G
AG
D000328:Adult; D000368:Aged; D004562:Electrocardiography; D005260:Female; D006333:Heart Failure / Q000150:complications* / Q000000981:diagnostic imaging / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D012891:Sleep Apnea Syndromes / Q000150:complications* / Q000188:drug therapy; D020181:Sleep Apnea, Obstructive / Q000150:complications / Q000188:drug therapy; D011795:Surveys and Questionnaires; D014463:Ultrasonography