Is myocardial performance reduced immediately prior to ventricular ectopy?
Ventricular ectopy is preceded by a significant decrease in myocardial performance in the last sinus beat preceding VPBs as observed in consecutive patients with a broad variety of heart conditions pointing to a mutual underlying electrical mechanism (ie, localized conduction block confined to an area surrounding the ectopic pacemaker).
Intra-articular PD was not correlated with pain symptom in this study.