Cat with chronic kidney disease and hypertension:
HDO curve with sinus node block:
Note the impact of the arrhythmia on stroke volume (single amplitude height) due to prolonged diastolic filling, increased contraction due to Frank Starling.
Arrhythmic situation in a dog:
Seen on direct unit and HDO with additional information on severity of affected stroke volume due to arrhythmia (height of single HDO amplitudes).