What does trigeminy refer to in terms of PVC occurrences?

Trigeminous PVCs refer to a specific pattern of premature ventricular contractions (PVCs), where a PVC occurs after every two normal beats. This means that for every two normal cardiac cycles, a third beat is a PVC, creating a repetitive pattern of normal beats followed by a PVC.

In this context, when referencing "every third beat," it indicates that the PVC is the third beat in a cyclical pattern of three. It’s essential to recognize this rhythmic occurrence, as it may influence the heart's overall function and can be a significant indicator in arrhythmic diagnoses or assessments. Understanding this pattern can help healthcare professionals monitor and interpret cardiac rhythms effectively, especially in patients who may experience frequent PVCs.