Open AccessValidation and Clinical Utility of a Simple In‐Home Testing Tool for Sleep‐Disordered Breathing and Arrhythmias in Heart Failure: Results of the Sleep Events, Arrhythmias, and Respiratory Analysis in Congestive Heart Failure (SEARCH) Study
Author(s) -
Abraham William T.,
Trupp Robin J.,
Phillips Barbara,
Bourge Robert C.,
Bailey Brian,
Harding Susan M.,
Schofield Peter,
Pilsworth Samantha,
Shneerson John M.,
Di Salvo Thomas,
Camuso Janice,
Johnson Douglas,
King Martin,
Javaheri Shahrokh
Publication year - 2006
Publication title -
congestive heart failure
Language(s) - English
Resource type - Journals
eISSN - 1751-7133
pISSN - 1527-5299
DOI - 10.1111/j.1527-5299.2006.05693.x
Subject(s) - medicine , polysomnography , cardiorespiratory fitness , heart failure , cardiology , breathing , physical therapy , anesthesia , apnea
Fifty patients with New York Heart Association class III systolic heart failure were enrolled in this prospective multicenter study that compared the diagnostic accuracy of a home‐based cardiorespiratory testing system with standard attended polysomnography. Patients underwent at least 2 nights of evaluation and were scored by blinded observers. At diagnostic cutoff points of ≥5, ≥10, and ≥15 events per hour for respiratory disturbance severity, polysomnography demonstrated a sleep‐disordered breathing prevalence of 69%, 59%, and 49%, respectively. Compared with polysomnography, the cardiorespiratory testing system demonstrated predictive accuracies of 73%, 73%, and 75%, which improved to 87%, 87%, and 83%, respectively, when analysis of covariance suggested reanalysis omitting one site's data. The system accurately identified both suspected and unsuspected arrhythmias. The device was judged by 80% of patients to be easy or very easy to use, and 74% of patients expressed a preference for the in‐home system. Therefore, this system represents a reasonable home testing device in these patients.