Feline Electrocardiography Feline NormalsEnlargement PatternsIssues of ConductionOther Abnormalities Feline Normal Long QT 25 mm/sec Feline Left Ventricular Enlargement 25 mm/sec Feline Atrial Standstill 25 mm/sec Feline ST Elevation 50 mm/sec Feline Sinus Arrhythmia 25 mm/sec Feline Right Ventricular Enlargement 25 mm/sec Feline Left Bundle Branch Block 25 mm/sec Feline Normal Long QT 50 mm/secFeline Left Bundle Branch Block 50/mm/sec Feline Sinus Rhythm 25 mm/secFeline First Degree AV Block 50mm/sec Feline Electrical Axis