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A first-degree, or 1 st degree, AV block is indicated on the ECG by a prolonged PR interval, as seen below. Enlarge Recall that the P wave indicates atrial depolarization, initiated by firing of ...
The diagnosis is NSR, first-degree AV block, 3:1 AV block, Mobitz type II, and high-degree AV block. The rhythm is regular with a rate of 30 beats/min. The QRS complex duration is normal (0.08 sec ...
A first-degree AV block is indicated on the ECG by a prolonged PR interval. ... The PR interval is normally 0.12-0.20 seconds or 120 to 200 milliseconds.
First-degree heart block is when the electrical ... heart beat and may lead to a slow heart beat. Healthcare professionals may also call this condition first-degree atrioventricular (AV) block.
First-degree AV block and Mobitz type I (Wenkebach) second-degree AV block are commonly seen in trained athletes, being present in ∼35% and 10% of athletes’ ECGs, respectively.21 22 23 As with sinus ...
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