Introduction to 12-Lead
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ECG Quizzes



1: Which is (are) the criteria for P-mitrale:
P wave wider than or equal to 0.12 seconds
QRS wider than or equal to 0.12 seconds
A distance of at least 0.04 seconds between the two humps on the P wave
P wave taller than 2.5 mm in lead II
A and C are correct.
2: LAE is called when:
There is a large initial positive deflection in V1.
There is a large initial negative deflection in V1.
There is a large terminal positive deflection in V1.
There is a large terminal negative deflection in V1.
None of the above.
3: An atrial premature complex can have the P wave hidden within the T wave of the preceding complex.
TRUE
FALSE
4: An atrial premature complex can be associated with aberrant conduction of the QRS leading to a wide QRS complex.
TRUE
FALSE
5: T wave abnormalities which are not within the normal range but yet are not found in a regional distribution are called:
Ischemic T waves
Injury T waves
Non-specific ST-T waves
Bad T waves
None of the above.
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