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
