2:1 AV block is characterized by one P wave to every other QRS.
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Q18: Q19: In AV blocks,the P-P interval is Q20: Q21: Third-degree AV block usually needs no treatment. Q22: The AV blocks with a constant PR Q24: Treatment for third-degree AV block usually includes Q25: All AV blocks involve a disturbance in Q26: In AV blocks,the site of the block Q27: The most dangerous of the AV blocks Q28: Wenckebach is characterized by
A)regular.
B)irregular.
C)absent.
D)the same
A)digitalis.
B)lidocaine.
C)amiodarone.
D)pacemaker.
A)gradually prolonging PR intervals.
B)constant
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