ECG Questions

Question 1

Answer 1

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junctional rhythm is where the heartbeat originates from the AV node or His Bundle

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if the ventricle does not receive triggering signals at a rate high enough from either the SA node or the AV node, the ventricular myocardium itself becomes the pacemaker

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2nd Degree Type I (aka Mobitz I or Wenckebach) Heart Block

Irregular rhythm (grouped QRS’s)

P-R interval: progressive lengthening until beat is dropped

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Question 28

Answer 28

Sinus Bradycardia

Regular rhythm, heart rate < 60

There is a P wave before QRS and QRS after P wave

Question 29

Answer 29

Polymorphic Ventricular Tachycardia

Torsades de Pointes “Twisting of the Points”

This is a polymorphic Vtach in that the shape of the QRS

complexes varies significantly.

Question 30

Answer 30

PR interval is prolonged

The normal PR interval is between 120 – 200 ms (0.12-0.20s) in duration (three to five small squares)

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Question 34

What does right axis deviation look like?

Answer 34

Question 35

How do you tell if right or left deviation in an ECG?

Answer 35

Question 36

Describe axis deviation

Answer 36

normal axis deviation

Question 37

determine axis deviation

Answer 37

left axis deviation

Question 38

cardiac axis?

Answer 38

extreme right axis deviation

Question 39

diagnose and explain

Answer 39

RSR’ pattern in lead V1 and deep, wide S waves in lead V6

wide QRS

Question 40

diagnose and why

Answer 40

Question 41

Most prominent signs in

Right VS left bundle branch block

Answer 41

right= RSR’ in V1

left= M pattern in V6