Introduction to 12-Lead
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1: The criteria for P-pulmonale include:
P wave wider than 0.12 seconds in lead II
P wave taller than 0.25 mm in lead II
P wave taller than 2.5 mm in lead II
P wave taller than 25 mm in lead II
None of the above.
2: You will always find right ventricular hypertrophy in a patient with P-pulmonale.
TRUE
FALSE
3: Criteria for RBBB include:
QRS wider than or equal to 0.12 seconds
RSR’ in lead V1
Slurred S waves in leads I and V6
Slurred S waves in leads I and V1
A, B, and C are correct.
4: You cannot make the diagnosis of LAE in someone with RBBB.
TRUE
FALSE
5: The axis in a RBBB can be a:
Normal axis
Right axis
Left axis
Any of the above.
6: The most common axis in LBBB is:
Normal axis
Right axis
Left axis
Extreme right axis
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