[Analysis of the preceding R-R interval and the coupling interval on premature ventricular contractions].

Premature Ventricular Contractions (PVCs) are one of the common arrhythmias. Although the analysis of the preceding R-R interval and the coupling interval on the Holter electrocardiogram, the Lorenz plotting method, has been used to characterize mature of PVC, this analysis has typically been performed without regard to the morphological classification of the electrocardiogram waveforms. Therefore, we performed the Lorenz plotting after a PVC classification.