Detection of apneas during 24-Hour ambulatory monitoring of ECG andrespiration in chronic heart failure patients with Cheyne-Stokesbreathing

摘要

Laboratory short-term respiratory monitoring detecting apneaoccurrence has a clinical and prognostic role in patients withcongestive heart failure. Long-term ambulatory recording of respirationmight provide more extensive and specific information about theoccurrence of abnormal patterns of breathing. Automatic detection ofapneas and periodic breathing should permit an easy interpretation ofrespiratory signal. Ten patients with congestive heart failure underwent24-hour recordings of ECG and respiration. The authors then compared 4different methods for detection of apneas. Results were more satisfyingfor a technique based on amplitude demodulation, whose applicationpermitted to quantify a high occurrence of abnormal respiratory patternsboth at night- and day-time. Quantification of these abnormalities overa circadian period provides new relevant clinical information fordiagnostic work-up, therapeutical management and follow-up of patients