BVetMed3: Equine Arrhythmias

Question 1

Question

The cardiac form of white muscle disease mainly affects

Answer

Neonates
Older horses
Highly active horses
Older males

Question 2

Question

A 3 month old foal is brought in to the clinic. It is dyspnoeic, has an irregular heart rate and its blood values come back with low glutathione peroxidase and selenium levels. This foal likely has

Answer

cardiac form of nutritional myodegeneration
skeletal muscle form of nutritional myodegeneration
First degree AV block
Second degree AV block

Question 3

Question

Which of the following are released into the circulation with myocardial cell death and are indicators of myocarditis or myocardial necrosis?

Answer

Creatinine Kinase (CK)
Lactate Dehydrogenase (LDH)
Selenium
Glutathione peroxidase
Cardiac Troponin I

Question 4

Question

In conventional ECG of horses, you typically put the positive electrode on the

Answer

left apex
right apex
left base
right base

Question 5

Question

In conventional ECG of horses, you typically put the negative electrode on the

Answer

Left apex
Left base
Right apex
Right base

Question 6

Question

Which type of atrioventricular block is always pathological?

Answer

First degree
Second degree
Third degree

Question 7

Question

What is the most common pathological arrhythmia in horses?

Answer

Atrial Fibrillation
Second degree AV block
Third degree AV block
First degree AV block
Ventricular premature contractions
Atrial premature contractions

Question 8

Question

Which type of AV block has P waves that are normal shaped, occur at the expected time but without associated QRS complexes?

Answer

First degree AV block
Second degree AV block
Third degree AV block

Question 9

Question

What type of equine arrhythmia is this?

Image:

Second+Degree (binary/octet-stream)

Answer

First degree AV block
Second degree AV block
Third degree AV block
Atrial fibrillation
Atrial premature contractions
Ventricular premature contractions
Ventricular tachycardia

Question 10

Question

Which of the following does not typically initiate atrial fibrillation?

Answer

atrial enlargement
ventricular septal defect
high vagal tone
fast SA node rate
variable refractory periods

Question 11

Question

What type of cardiac rhythm would you expect with atrial fibrillation?

Answer

Irregularly irregular
Regularly irregular
Regularly regular

Question 12

Question

What is not typically a characteristic of an ECG of atrial fibrillation?

Answer

no p waves
f waves
regularly irregular rhythm
random depolarisation of AV node

Question 13

Question

Which of the following horses with atrial fibrillation would you prescribe quinidine sulphate for?

Answer

an older, retired horse where atrial fibrillation is an incidental finding
an active racehorse with exercise intolerance
an older racehorse in early heart failure

Question 14

Question

Which of the following is FALSE regarding atrial premature contractions

Answer

Normally occur during exercise
Rarely require therapy as long as ventricular rate is also no increased
Most are idiopathic
The frequency increases in the recovery phase after strenuous exercise

Question 15

Question

What type of arrhythmia is shown in this ECG?

Image:

Ventricular+Premature+Contractions (binary/octet-stream)

Answer

Second degree AV block
First degree AV block
Third degree AV block
Atrial premature contractions
Ventricular premature contractions
Ventricular tachycardia

Question 16

Question

What is the drug of first choice under anaesthesia for ventricular arrhythmias?

Answer

Magnesium sulphate
Lidocaine
Propanolol
Procainamide

Next up

BVetMed3: Equine Arrhythmias

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Resource summary

Question 1

Question 2

Question 3

Question 4

Question 5

Question 6

Question 7

Question 8

Question 9

Question 10

Question 11

Question 12

Question 13

Question 14

Question 15

Question 16

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	Created by Marina Martins over 5 years ago