Recording a diagnostic ECG

Question 1

Indications for resting electrocardiography

Answer 1

Rhythm disturbance detected on physical exam

Tachycardia that cannot be explained

Anaesthesia

Question 2

Methods for recording ECG at rest

Answer 2

AliveCor/Kardia ECG
- rapid
- relatively cheap

Telemedicine ready- EkoDuo

Question 3

Indications for holter electrocardiography

Answer 3

Collapse/cardiac disease evaluation

During pharmacological management of rhythm disturbance

Fetal ECG

Question 4

Resting ECG electrode placement

Answer 4

RA (red) Right mid-jugular groove

LA (yellow) Left heart base

LL (green) NEUTRAL and RL (black) earth

Question 5

Indications for exercising electrocardiography

Answer 5

Evaluation of horse with collapse

Document concurrent cardiac disease in horses with URT obstruction

Assessment of safety implication of other cardiac abnormalities
○ Atrial fibrillation
○ Aortic valve regurgitation
○ Myocardial disease

Question 6

Methods for recording ambulatory ECG:

Answer 6

Telemetric/Holter systems
- affordable
- Easy to use
- good for 24-continuous monitoring

Question 7

Diagnose:
- 12yr old TB mare
- showjumper
- Epistaxis during exercise
- At rest HR about 48bpm
- No p waves on ECG

Answer 7

Atrial fibrillation

Question 8

Diagnose:
- 18yr old sports horse
- fever of unknown origin
- lack of p waves in some complexes
- isolated and recurrent ventricular ectopic beats

Answer 8

Ventricular
Bigeminy

Question 9

Diagnose:
- ABnormality identified during vaccination
- no p waves
- narrow tall QRS

Answer 9

Atrioventricular block