Certified Rhythm Analysis Technician (CRAT) Practice Exam 2026 – All-in-One Study Guide for Exam Success!

The presence of an irregular pattern where every third beat appears early, wide, and bizarre is characteristic of trigeminy PVCs. In this context, PVC stands for premature ventricular contractions, which are early heartbeats originating in the ventricles. When PVCs occur in a pattern of trigeminy, it means that there are two normal beats followed by one PVC, leading to the irregular rhythm observed in the strip.

Trigeminy is specifically defined as a sequence in which every third beat is a PVC, making it easier to identify this pattern in any rhythm assessment. This pattern results in the PVCs being regularly spaced out in sets, contrasting with other forms like couplets, which would consist of two PVCs in close succession without the regular pattern of two normal beats beforehand. Hence, the description of the rhythm aligns well with the definition of trigeminy PVCs.