Note the premature ventricular contraction (PVC) that triggers the AVNRT in this ECG. If a premature atrial contraction (PAC) or premature ventricular contraction (PVC) occurs at the right time ...
There are four main characteristics of PACs: Premature, occurring earlier than ... or the ectopic PR interval will be prolonged. The ECG will show a premature, ectopic P wave and then no QRS ...
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