Second Degree Type I AV Block 2:1 AV block Some P waves conduct to the ventricles on this ECG tracing, however it is clear that some do not. There does appear to be a prolonging PR interval before ...

[2] Sources of cardioembolism ... P area and signal-averaged P wave late atrial potential are strong predictors of AF incidence and possibly of stroke incidence. ECG left ventricular hypertrophy ...

This ECG has both second degree AV block with 2:1 block and second degree type I AV block. Note that intermittent P waves conduct to the ventricles on this ECG tracing, however it is clear that ...