| Echocardiography for determining the optimal atrioventricular interval in patients with dual chamber pacemakers. | |
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MedLine Citation:
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PMID: 19685516 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: We investigated the clinical value of Doppler echocardiography for determining the optimal setting of atrioventricular interval in patients with dual chamber pacemakers (DDD). In 38 patients with complete atrioventricular block and DDD pacemakers, the atrioventricular interval was prolonged in a stepwise fashion by 20 ms, from 90 to 250 ms, and cardiac stroke volume and transmitral flow were measured by pulsed Doppler echocardiography. METHODS: The optimal atrioventricular interval at which the cardiac stroke volume was maximal was 168.9 +/- 15.6 ms. The atrioventricular interval was 178.4 +/- 23.4 ms when the end of the A wave coincided with complete closure of the mitral valve. RESULTS: There was a significant linear relationship between the optimal atrioventricular interval and the predicted optimal atrioventricular interval (Y = 86.2 +/- 0.5X, r = 0.70, standard error of the estimate [SEE] = 11.5, P < 0.01). CONCLUSION: The optimal atrioventricular interval setting for DDD pacing can be successfully determined using Doppler echocardiography, which is a noninvasive, repeatable, and simple approach. |
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Authors:
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Pin Sun; Qing Zhao; Zhi-Bin Wang; Jian-Sheng Li; Jin-Shan Wo; Shang-Lang Cai |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Clinical cardiology Volume: 32 ISSN: 1932-8737 ISO Abbreviation: - Publication Date: 2009 Aug |
Date Detail:
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Created Date: 2009-08-24 Completed Date: 2009-10-29 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7903272 Medline TA: Clin Cardiol Country: United States |
Other Details:
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Languages: eng Pagination: 439-41 Citation Subset: IM |
Affiliation:
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Department of Cardiac Ultrasound, Affiliated Hospital of Medical College, Qingdao University, Qingdao City, China. sunnysunpin@163.com |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Aged, 80 and over Aortic Valve / physiopathology, ultrasonography Atrial Function* Atrioventricular Block / physiopathology, therapy*, ultrasonography* Cardiac Pacing, Artificial* / adverse effects Echocardiography, Doppler, Pulsed* Equipment Design Female Hemodynamics* Humans Linear Models Male Middle Aged Mitral Valve / physiopathology, ultrasonography Mitral Valve Insufficiency / etiology, physiopathology, prevention & control, ultrasonography Myocardial Contraction Pacemaker, Artificial* Predictive Value of Tests Stroke Volume Time Factors Treatment Outcome Ventricular Function* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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