Extra-Cavity Image Registration via the Aortic Root During Left Ventricular Mapping and Ablation.

Background: Computed tomography (CT) image integration is of limited use in left ventricular (LV) ablation due to inadequate accuracy of registration. The current study aimed to investigate the accuracy and feasibility of extra-cavity LV image registration via the coronary cusp.

Methods: Consecutive patients were enrolled as the validation group (n = 41) and feasibility group (n = 48).

[Retrospective analysis of patients with thrombocytopenia after patent ductus arteriosus interventional occlusion].

Objective: To explore the risk factors of patent ductus arteriosus (PDA) patients with thrombocytopenia after PDA interventional occlusion.

Methods: Thrombocytopenia occurred in 14 out of 350 patients underwent PDA occlusion. Age, gender, body weight, PDA size, occluder size, mean pulmonary arterial pressure, the dose of heparin, the manufacturer of occluder, residual shunt after operation were analyzed.