Question

question 17 of 20 what is the rhythm? select your answer. atrial fibrillation (afib) with pvcs (unifocal) normal sinus rhythm with couplet pvcs (couplets) normal sinus rhythm with pacs sinus rhythm with bigeminal pvcs (unifocal)

Explanation:

1. Analyze the ECG waveform: Regular sinus - derived QRS complexes are interspersed with premature ventricular contractions (PVCs) that occur in a pattern where every other beat is a PVC, which is characteristic of bigeminal rhythm. Also, the PVCs appear to have a similar morphology indicating they are unifocal.
2. Exclude other options: There are no signs of atrial fibrillation (no irregularly irregular baseline without discernible P - waves). There are no PACs (premature atrial contractions) as there are no premature P - waves before the QRS complexes. And it is not a normal sinus rhythm with couplet PVCs (couplets are two consecutive PVCs).

Answer:

Sinus Rhythm with Bigeminal PVCs (Unifocal)