What does NSR with 1st Degree AVB stand for in cardiology?
a) Normal Sinus Rhythm with 1st Degree Atrioventricular Block
b) Non-Specific Rhythm with 1st Degree Atrioventricular Bundle
c) Narrow Sinus Rhythm with 1st Degree Atrioventricular Bypass
d) Nodal Sinus Rhythm with 1st Degree Atrial Ventricular Beat

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