| Effect of preload reduction on sonographic myocardial integrated backscatter. | |
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MedLine Citation:
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PMID: 18088055 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: Sonographic myocardial tissue characterization with integrated backscatter (IBS) is affected by both structural and functional properties of the myocardium. The aim of the present study was to investigate the effect of preload reduction by hemodialysis (HD) on IBS measurements. METHODS: Fifty-two patients on maintenance HD underwent echocardiography before and after a routine HD session. Measurements included the variation of IBS during the cardiac cycle (CV-IBS) and calibrated IBS (cal-IBS). RESULTS: After HD, there were significant reductions in left ventricular end-diastolic and end-systolic dimensions and left atrial diameter. There was a reduction in stroke volume and LV ejection fraction consistent with a reduction in preload. Furthermore, CV-IBS was significantly lower after HD (7.9 +/- 2.2 versus 6.9 +/- 1.8 dB, 7.0 +/- 2.1 versus 6.2 +/- 1.9 dB, and 9.0 +/- 2.6 versus 8.1 +/- 2.0 dB [p < 0.01], respectively, in the left anterior, lateral, and inferior wall of the ventricle). Cal-IBS remained unchanged after dialysis compared with baseline. CV-IBS and ultrafiltration volume were significantly correlated. CONCLUSION: HD leads to a decrease in CV-IBS that appears to be preload-dependent. This finding is in concordance with diminished left ventricular performance during HD. |
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Authors:
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Andrzej Minczykowski; Danuta Zaremba-Drobnik; Irena Pietrzak; Stanislaw Czekalski; Henryk Wysocki |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of clinical ultrasound : JCU Volume: 36 ISSN: 0091-2751 ISO Abbreviation: J Clin Ultrasound Publication Date: 2008 Mar-Apr |
Date Detail:
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Created Date: 2008-03-10 Completed Date: 2008-07-31 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0401663 Medline TA: J Clin Ultrasound Country: United States |
Other Details:
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Languages: eng Pagination: 157-65 Citation Subset: IM |
Copyright Information:
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(Copyright) 2007 Wiley Periodicals, Inc. |
Affiliation:
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Department of Cardiology-Intensive Therapy, Poznan University of Medical Sciences, Przybyszewskiego 49, 60-355 Poznan, Poland. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Blood Flow Velocity Blood Volume Echocardiography, Doppler / methods* Humans Image Processing, Computer-Assisted Kidney Failure, Chronic / therapy Observer Variation Renal Dialysis Reproducibility of Results Stroke Volume Ventricular Dysfunction, Left / physiopathology, ultrasonography* Ventricular Function, Left |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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