Document Detail


Assessment of left ventricular size and function in horses using anatomical M-mode echocardiography.
MedLine Citation:
PMID:  20615777     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
OBJECTIVE: To study the applicability of anatomical M-mode (AMM) for assessment of left ventricular (LV) size and function in horses, evaluate agreement with conventional M-mode (CMM), determine reliability, and establish reference intervals for AMM measurements.
ANIMALS: 98 horses; 13.1 +/- 5.6 years; 538 +/- 78 kg.
METHODS: Two-dimensional and M-mode recordings were analyzed retrospectively. Standard LV dimensions and indices of LV function, including time intervals, were measured in CMM and compared with AMM studies in long-axis (lx) and short-axis (sx) views.
RESULTS: The percentages of measureable cycles were 99%, 97%, and 90% for routine LV studies in CMM(sx), AMM(sx), and AMM(lx) mode. For time intervals, >or= 93% of cycles could be measured using AMM compared to a maximum of 77% using CMM. AMM(sx) measurements agreed well with CMM(sx) measurements for LV studies; the agreement of AMM(lx) with CMM(sx) was markedly lower. The LV ejection time and the duration of electromechanical systole, but not the LV pre-ejection period and the index of myocardial performance, showed fair agreement between methods. Intraobserver and interobserver measurement variabilities were low for most variables.
CONCLUSIONS: AMM can replace CMM for assessment of LV dimensions in horses, but is not recommended for measurement of time intervals.
Authors:
Patrizia A Grenacher; Colin C Schwarzwald
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Publication Detail:
Type:  Journal Article     Date:  2010-07-08
Journal Detail:
Title:  Journal of veterinary cardiology : the official journal of the European Society of Veterinary Cardiology     Volume:  12     ISSN:  1875-0834     ISO Abbreviation:  J Vet Cardiol     Publication Date:  2010 Aug 
Date Detail:
Created Date:  2010-08-20     Completed Date:  2010-12-03     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101163270     Medline TA:  J Vet Cardiol     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  111-21     Citation Subset:  IM    
Copyright Information:
Copyright (c) 2010 Elsevier B.V. All rights reserved.
Affiliation:
Equine Department, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 260, 8057 Zurich, Switzerland.
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MeSH Terms
Descriptor/Qualifier:
Animals
Echocardiography / veterinary*
Female
Heart Ventricles / anatomy & histology,  ultrasonography*
Horses / anatomy & histology,  physiology*
Male
Observer Variation
Reference Values
Reproducibility of Results
Retrospective Studies
Stroke Volume / physiology
Systole / physiology
Ventricular Function, Left / physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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