Follow-up strategy
Following discharge, it was recommended that patients undergo at least one cardiac rhythm evaluation through electrocardiography (ECG) or 24-hour Holter monitoring at the 1-month mark post-procedure, and a transthoracic echocardiography 3 months afterwards to check for abnormalities in the left ventricular end-diastolic diameter (LVEDD) or left ventricular ejection fraction (LVEF).
For the purpose of this study, we contacted patients to gather current symptomatology, the outcomes from ECG and 24-hour Holter monitoring, the most recent measurements of LVEDD and LVEF, post-CA complications, incidences of rehospitalization, and details regarding pharmacotherapy. Baseline data, including patient demographics, PVC burden, time elapsed since initial diagnosis, history of pharmacotherapy, and cardiovascular history, were extracted from the electronic medical records system. Antiarrhythmic drugs were categorized according to the updated classification system10, and traditional Chinese medicine treatments such as Shensong Yangxin11capsules and Wenxin Keli12 were also accounted for.