Document Detail


Systolic and diastolic myocardial dysfunction in cats with hypertrophic cardiomyopathy or systemic hypertension.
MedLine Citation:
PMID:  17063702     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: Hypertrophic cardiomyopathy (HCM) and chronic systemic hypertension (SHT) can both lead to left-ventricular hypertrophy (LVH) in cats. Assessment of LVH-associated myocardial dysfunction could provide new insights in the understanding of the pathophysiology of these diseases. HYPOTHESIS: Quantification of left-ventricular free-wall (LVFW) motion using tissue Doppler imaging (TDI) could permit differentiation of feline HCM from SHT-related LVH (LVH-SHT). ANIMALS: A total of 108 cats of different breeds were enrolled in this study: 35 cats with HCM, 17 with concentric LVH and SHT, and 56 healthy cats as a control group. METHODS: All cats were examined by conventional echocardiography and 2-dimensional color TDI. RESULTS: Radial and longitudinal diastolic LVFW velocities were similarly altered in cats with HCM and LVH-SHT, compared to controls. Systolic velocities were also lower in the groups with hypertrophy than in the controls, for longitudinal but not radial motion. To determine whether these diastolic and systolic alterations could also be observed in cats without LVFW hypertrophy, we performed a subgroup analysis in cats with a normal M-mode examination, that is, with only a localized subaortic interventricular septum hypertrophy. A significant radial and longitudinal diastolic dysfunction was still observed in both the HCM and LVH-SHT groups compared to controls, and systolic dysfunction was detected in the longitudinal motion. CONCLUSIONS: LVFW motion is similarly altered in cats with HCM and LVH-SHT. This dysfunction occurs independently of the presence of myocardial hypertrophy, demonstrating that TDI is capable of detecting systolic and diastolic segmental functional changes in nonhypertrophied wall segments in cats with HCM and SHT.
Authors:
Carolina Carlos Sampedrano; Valérie Chetboul; Vassiliki Gouni; Audrey P Nicolle; Jean-Louis Pouchelon; Renaud Tissier
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of veterinary internal medicine / American College of Veterinary Internal Medicine     Volume:  20     ISSN:  0891-6640     ISO Abbreviation:  J. Vet. Intern. Med.     Publication Date:    2006 Sep-Oct
Date Detail:
Created Date:  2006-10-26     Completed Date:  2006-11-21     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8708660     Medline TA:  J Vet Intern Med     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1106-15     Citation Subset:  IM    
Affiliation:
Unité de Cardiologie d'Alfort, Ecole Nationale Vétérinaire d'Alfort, Maisons-Alfort, France.
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MeSH Terms
Descriptor/Qualifier:
Age Factors
Animals
Blood Glucose / metabolism
Blood Pressure
Cardiomyopathy, Hypertrophic / complications,  physiopathology,  ultrasonography,  veterinary*
Cat Diseases / blood,  physiopathology*,  ultrasonography*
Cats
Creatinine / blood
Diastole
Echocardiography, Doppler, Color / veterinary*
Hypertension / complications,  physiopathology,  ultrasonography,  veterinary*
Hypertrophy, Left Ventricular / complications,  physiopathology,  ultrasonography,  veterinary*
Systole
Chemical
Reg. No./Substance:
0/Blood Glucose; 60-27-5/Creatinine

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


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