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Flashcards in Rhythm Disturbances Deck (32)
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1

Is the QRS positive or negative in lead II in small animals?

Positive

2

Which ECG lead to you use to interpret heart function of a small animal?

Lead II

3

Sinus arrest/lack of electrical activity that causes syncopy

Sick sinus syndrome

4

What breeds are predisposed to sick sinus syndrome?

Westies, schnauzers, cockers

5

What e-lyte abnormality causes atrial standstill?

Hyperkalemia

6

What are ECG signs of hyperkalemia?

Tented T-wave, no P-wave, wide QRS

7

What are common conditions that cause hyperkalemia?

Urinary blocked cats or Addisonian dogs

8

Prolonged PR interval

1* AV block

9

Some P-wave don't have QRS

2* AV block

10

No assoc. between P and QRS + escape beats

3* AV block

11

Which 2* AV block is assoc. w/progressively lengthening PR before a dropped QRS?

Mobitz I (Wenckenbach)

12

Which 2* AV block is assoc. w/a consistent PR interval with dropped QRS complexes?

Mobitz II

13

2* AV blocks are normal in a horse and commonly seen after administration of what drug?

Xylazine

14

What is a 2* AV Mobitz I block a clinical sign of?

High vagal tone

15

How can you treat a 2* AV Mobitz I block?

Atropine/glycopyrrolate

16

No P-waves w/tall T-waves indicate what arrhythmia?

Atrial standstill (hyperkalemia)

17

Wide and bizarre ventricular complexes but no AV assoc.

3* AV block (escape beats)

18

What can cause a VPC?

Heart dz, GDV, splenic disease, hypokalemia

19

What will an ECG show with a VPC?

Normal AV assoc. w/wide and bizarre QRS complex

20

How do you treat VPCs?

Lidocaine

21

What is the MoA of lidocaine?

Na channel blocker

22

Short R-R w/QRS that looks like a sinus beat

APCs

23

What causes APCs?

Heart disease causing atrial stretch

24

Irregular/absent P-waves

Atrial fibrillation

25

Washing machine murmur

Atrial fibrillation

26

What will you see with electrical alternans on ECG?

Varying height of every other R wave

27

Tall P wave indicates enlargement of which atrium?

R atrium

28

Wide P waves indicate enlargement of which atrium?

L atrium

29

Tall R waves indicate enlargement of which ventricle?

L ventricle

30

What do you call a string of APCs in a row?

Atrial tachycardia