karahm
Quiz by , created over 5 years ago

Cardiorespiratory Quiz on ECG/EKG, created by karahm on 03/02/2014.

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karahm
Created by karahm over 5 years ago
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Question 1

Question
The action potential propagates as a wave of depolarization through the conduction system myocardium. This wave is the electrical signal that triggers myocardial contraction.
Answer
  • True
  • False

Question 2

Question
Which of the following is FALSE regarding electrocardiography?
Answer
  • It provides information about cardiac size (hypertrophy) and the mean vector (direction) of ventricular or atrial activation (mean electrical axis-MEA)
  • Is indicated when the heart rate is too high, too slow, or the rhythm is inappropriately irregular
  • A wave of depolarization directed towards the positive electrode of a lead results in a positive deflection on the EKG
  • The normal heart depolarizes from left to right, cranial to caudal, and dorsal to ventral

Question 3

Question
Which of the following are correctly paired? Check all that apply.
Answer
  • Atrial depolarization- P wave
  • Atrial depolarization- QRS complex
  • Atrial depolarization- T wave
  • Ventricular depolarization- QRS complex
  • Ventricular depolarization- P wave
  • Ventricular depolarization- T wave
  • Ventricular repolarization- T wave
  • Ventricular repolarization- QRS complex
  • Ventricular repolarization- P wave

Question 4

Question
MEA (mean electrical axis) is the dominant direction of atrial activation.
Answer
  • True
  • False

Question 5

Question
What is the origin of a narrow QRS?
Answer
  • Supraventricular
  • The ventricles
  • Intraventricular conduction delay

Question 6

Question
Which of the following is FALSE regarding arrhythmias?
Answer
  • Develop when the conduction system prevents initiation or propagation of the wave front
  • They are clinically important because they can be responsible for clinical signs including syncope, low cardiac output, and sudden cardiac death
  • Tachyarrhythmias develop with high vagal tone
  • Bradyarrhythmias develop when disease of the conduction system slows the rate of depolarization or "blocks" conduction

Question 7

Question
What type of arrhythmia does this image represent? Note: this is on 25 mm/sec paper.
Answer
  • Sinus arrhythmia
  • Sinus tachycardia
  • Sinus bradycardia
  • Sinus arrest

Question 8

Question
What does this image demonstrate?
Answer
  • Supreventricular Tachycardia (SVT)
  • Supraventricular Tachyarrhythmia (SVTA)
  • Sinus Tachycardia
  • Atrial fibrillation

Question 9

Question
What does this image depict?
Answer
  • Atrial fibrillation
  • Supraventricular tachyarrhythmia
  • Supraventricular tachycardia

Question 10

Question
What is this?
Answer
  • Ventricular fibrillation
  • Ventricular tachycardia
  • Atrial fibrillation
  • Sinus arrhythmia

Question 11

Question
How are AV blocks resolved?
Answer
  • They aren't, the patient just lives with it
  • Administration of atropine
  • Exercise
  • They resolve on their own

Question 12

Question
Which of the following is CORRECT?
Answer
  • 1st degree AV block: PR prolongation 2nd degree AV block: complete failure of AV conduction 3rd degree AV block: intermittent failure of AV conduction
  • 1st degree AV block: complete failure of AV conduction 2nd degree AV block: intermittent failure of AV conduction 3rd degree AV block: PR prolongation
  • 1st degree AV block: PR prolongation 2nd degree AV block: intermittent failure of AV conduction 3rd degree AV block: complete failure of AV conduciton
  • 1st degree AV block: complete failure of AV conduction 2nd degree AV block: PR prolongation 3rd degree AV block: intermittent failure of AV conduction

Question 13

Question
Which AV block is this?
Answer
  • 1st degree
  • 2nd degree
  • 3rd degree

Question 14

Question
Which AV Block is this?
Answer
  • 1st degree
  • 2nd degree
  • 3rd degree

Question 15

Question
What is going on in this EKG?
Answer
  • Sick sinus syndrome
  • Hyperkalemic rhythm
  • 1st degree AV block
  • Atrial fibrillation