Sinus Rhythm with PVCs

Premature ventricular beats interrupt an underlying sinus rhythm.

Programmatically generated teaching example. Morphology and supporting values are simplified.

Typical rate: Underlying sinus rate varies
Regularity: Interrupted by premature beats
P waves: Absent before the PVC
PR interval: Not applicable to PVC
QRS: PVC is wide, ≥120 ms

Sources and review status

This guide uses RhythmDock’s centralized educational definitions. See reference sources and limitations. Published September 13, 2026. Independent medical review is pending; this is not a clinical interpretation tool.