Normal electrocardiographic QT interval in race-fit Standardbred horses at rest and its rate dependence during exercise

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Cardiac repolarization, measured as QT and Tpeak to Tend (TpTe) intervals on the ECG, is important, as irregularities caused by diseases, ventricular hypertrophy, drugs and genetic defects can trigger arrhythmias which predispose human patients to syncope and sudden cardiac death. In horses, repolarization is not well described and therefore QT analysis cannot yet be used diagnostically. Therefore, we sought to describe reference values for the normal QT and TpTe intervals in Standardbreds and to determine the best method for heart rate (HR) correction.
Original languageEnglish
JournalJournal of Veterinary Cardiology
Issue number1
Pages (from-to)23-31
Number of pages9
Publication statusPublished - Mar 2013

ID: 48051968