The ECG will show a premature ... because every other beat is a nonconducted PAC, and the QRS rate is quite slow.

the PAC will fail to conduct to the ventricles and there will not be a QRS complex afterwards (or the ectopic PR interval will be prolonged, as in the second QRS complex on this ECG). The ECG will ...

and sinus with premature atrial contraction (PAC) or premature ventricular contraction (PVC). HeartBeam submitted the application based on the pivotal VALID-ECG study data. This trial involved 198 ...