Accessory pathway analysis using a multimodal deep learning model.

Cardiac accessory pathways (APs) in Wolff-Parkinson-White (WPW) syndrome are conventionally diagnosed with decision tree algorithms; however, there are problems with clinical usage. We assessed the efficacy of the artificial intelligence model using electrocardiography (ECG) and chest X-rays to identify the location of APs. We retrospectively used ECG and chest X-rays to analyse 206 patients with WPW syndrome.

Incidence and Characteristics of Coronary Artery Spasms Related to Atrial Fibrillation Ablation Procedures - Large-Scale Multicenter Analysis.

Background: Coronary artery spasms (CASs), which can cause angina attacks and sudden death, have been recently reported during catheter ablation. The aim of the present study was to report the incidence, characteristics, and prognosis of CASs related to atrial fibrillation (AF) ablation procedures.

Methods and results: The AF ablation records of 22,232 patients treated in 15 Japanese hospitals were reviewed.

Familial Carney complex with biatrial cardiac myxoma.

We report a case of Carney complex (CNC) with biatrial cardiac myxoma. The patient had left and right atrial myxomas which were resected in a surgery. She showed bilateral adrenal tumors and multiple mammary tumors.

Functional characteristics of left ventricular synchronization via right ventricular outflow-tract pacing detected by two-dimensional strain echocardiography.

Background: Recently, due to the detrimental effects on the ventricular function associated with right ventricular apical (RVA) pacing, right ventricular septal (RVS) pacing has become the preferred pacing method. However, the term RVS pacing refers to both right ventricular outflow-tract (RVOT) and mid-septal (RVMS) pacing, leading to a misinterpretation of the results of clinical studies. The purpose of this study, therefore, was to elucidate the functional differences of RVA, RVOT, and RVMS pacing in patients with atrioventricular block.

Successful treatment of prolonged cardiopulmonary arrest of Kounis syndrome during coronary angioplasty.

We experienced a case of Kounis syndrome with cardiopulmonary arrest and severe coronary spasm. A 70-year-old man with cardiac pacemaker and chronic dialysis was treated for angina pectoris of the right coronary artery. After diagnostic coronary angiography of the right coronary artery, optical coherence tomography was performed with contrast medium and low-molecular-weight dextran.

Percutaneous interventional techniques to remove embolized silicone port catheters from heart and great vessels.

Rupture of a silicon port catheter is a relatively rare complication and sometimes it is difficult to remove it. We experienced three cases of retrieval of silicone port catheters migrating into cardiac ventricle or pulmonary artery. Several devices such as a snare wire, an ablation catheter, and a basket catheter in combination with interventional guiding catheter were applied to retrieve them.

A case of coronary lesion with lotus root appearance treated by percutaneous coronary intervention with intravascular ultrasound guidance.

A 66-year-old man underwent percutaneous coronary intervention (PCI). Coronary angiography showed a diffuse lesion with lotus root appearance and severe stenosis in the left anterior descending artery (LAD). Multiple channels were observed by intravascular ultrasound (IVUS).