| Activity monitoring in heart failure patients with cardiac resynchronization therapy. | |
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MedLine Citation:
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PMID: 18037741 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: Cardiac resynchronization therapy (CRT) improves functional capacity in heart failure patients. This study aimed to prospectively analyze long-term device-based monitoring of physical activity in patients undergoing CRT. METHODS AND RESULTS: The Activity Log Index (ALI), calculated by CRT devices, represents the percentage of time when acceleration exceeds a threshold and monitors the physical activity. Data from 178 CRT patients (New York Heart Association III 91%, left ventricular ejection fraction 21+/-6%, left ventricular end-diastolic diameter 69+/-9 mm, QRS 159+/-27 ms, sinus rhythm 81%) were retrieved. The ALI increased from a baseline value of 3.6+/-2.0 to 11.2+/-4.6 (p<0.005) 104 weeks after initiation of CRT. A plateau was reached at approximately 12 weeks and thereafter ALI remained stable for up to 2 years. The magnitude of the changes in ALI was similar in patients with different etiologies and underlying rhythms. Despite similar values at baseline, elderly patients (>or=65 years) exhibited significantly lower ALI values than younger patients during the follow-up and at the plateau (9.5+/-4.2 vs 13.3+/-4.8, p<0.001). CONCLUSIONS: Device-based monitoring of physical activity in CRT patients is feasible. CRT resulted in a large and long-term increase in physical activity. |
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Authors:
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Mihoko Kawabata; Cecilia Fantoni; Francois Regoli; Santi Raffa; Francesca Pastori; Simona Fratini; John Prentice; Helmut U Klein; Angelo Auricchio |
Publication Detail:
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Type: Evaluation Studies; Journal Article |
Journal Detail:
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Title: Circulation journal : official journal of the Japanese Circulation Society Volume: 71 ISSN: 1346-9843 ISO Abbreviation: Circ. J. Publication Date: 2007 Dec |
Date Detail:
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Created Date: 2007-11-26 Completed Date: 2008-02-12 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101137683 Medline TA: Circ J Country: Japan |
Other Details:
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Languages: eng Pagination: 1885-92 Citation Subset: IM |
Affiliation:
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Department of Cardiovascular Medicine, Tokyo Medical and Dental University, Japan. mihoko_kawabata.cvm@tmd.ac.jp |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aged Aging / physiology Diabetes Mellitus / physiopathology Female Heart Failure / etiology, physiopathology*, therapy* Heart Rate / physiology Humans Male Middle Aged Monitoring, Ambulatory / instrumentation* Motor Activity / physiology* Pacemaker, Artificial* Prospective Studies Stroke Volume / physiology |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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