Detection of congestive heart failure by mitral annular displacement in cats with hypertrophic cardiomyopathy – concordance between tissue Doppler imaging–derived tissue tracking and M-mode

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Introduction: The left ventricular systolic longitudinal function, traditionally measured by M-mode–derived mitral annular plane systolic excursion (MAPSE), is reduced in feline hypertrophic cardiomyopathy (HCM) and further reduced in cats with left-sided congestive heart failure (CHF). The objectives of this study were to compare longitudinal displacement measured by tissue tracking (TT-LD) and MAPSE in feline HCM and assess these methods’ ability to differentiate CHF from preclinical HCM. A further objective was to provide preliminary reference intervals for TT-LD. Animals: Eighty-five client-owned cats. Methods: A retrospective case–control study. Anatomical M-mode was used to record MAPSE, and TT-LD was recorded by tissue tracking. Results: Reduced longitudinal displacement measured by either MAPSE or TT-LD was significantly associated with CHF in cats with HCM (p < 0.036). Receiver-operating characteristic analysis indicated that TT-LD (AUC: 92.9%–97.9%) was more sensitive and specific than MAPSE (AUC: 85.8%–89.1%) for the detection of CHF. A diagnostic cut-off of 2.89 mm for maximal TT-LD in the left ventricular septum resulted in a sensitivity and specificity of 100% and 83.3%, while a diagnostic cut-off of 2.41 mm in the left ventricular posterior wall resulted in a sensitivity of 100% and a specificity of 90%. Conclusions: M-mode–derived mitral annular plane systolic excursion and TT-LD were strongly correlated, but not interchangeable. Longitudinal displacement measured by tissue tracking decreased more with disease severity than traditional MAPSE. Longitudinal displacement may help detect CHF in cats with HCM – with the maximal TT-LD of the left ventricular posterior wall achieving the highest AUC value.

OriginalsprogEngelsk
TidsskriftJournal of Veterinary Cardiology
Vol/bind36
Sider (fra-til)153-168
Antal sider16
ISSN1760-2734
DOI
StatusUdgivet - 2021

Bibliografisk note

Funding Information:
The authors wish to acknowledge Tenna B. Pedersen and Elinor R. Jørgensen for their skillful technical assistance. This study was financially supported by the Department of Veterinary Clinical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg , Denmark.

Publisher Copyright:
© 2021 Elsevier B.V.

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