Hemolysis After Pulsed-Field Ablation of Atrial Fibrillation.

Pulsed-field ablation (PFA) offers notable advantages in atrial fibrillation (AF) ablation by selectively targeting cardiomyocytes via an irreversible electroporation mechanism, thereby minimizing damage to surrounding tissues. Although clinical studies demonstrate that PFA is both safe and effective, PFA-mediated hemolysis and potential acute kidney injury (AKI) development have been recently reported. This study comprehensively reviews the literature on PFA-associated hemolysis, analyzing the underlying mechanisms, risk factors, and preventive management strategies.

[The impact of frailty on the prognosis of chronic heart failure patients treated with cardiac resynchronization therapy defibrillator implantation].

The aim of this study was to assess the frailty status of patients with heart failure undergoing CRT-D and then explore the predictive value of frailty for all-cause mortality and heart failure-related readmissions in these patients. We retrospectively included 374 patients with chronic heart failure who underwent CRT-D treatment at the First Affiliated Hospital of Xinjiang Medical University between June 2020 and June 2024. Based on the Tilburg Debilitation Assessment Scale, 175 patients (46.

A case of endocardial dissection caused by Micra implantation.

Background: Leadless pacemakers are a recent technological advancement. It has many advantages, but there are still a few serious complications.

Case Presentation: This article reports the case of a patient with an endocardial tear and dissection caused by contact with the tip of the Micra cup during surgery and summarises the relevant data.

Feasibility study of cryoballoon ablation for atrial fibrillation with KODEX-EPD: a single center experience.

To evaluate the feasibility of cryoballoon (CB) ablation of atrial fibrillation (AF) under the guidance of a new three-dimensional (3D) mapping system KODEX-EPD. 40 patients scheduled for CB ablation of AF in the first affiliated Hospital of Xinjiang Medical University from August 2021 to July 2022 were randomly divided into two groups: KODEX-EPD 3D mapping system guidance group (KODEX group, n = 20) and conventional two-dimensional perspective group (standard group, n = 20). The ablation time, operation time, fluoroscopy time, fluoroscopy dose, contrast agent dosage and follow-up data were compared between the two groups.

Feasibility, safety and effectiveness of mapping system assisted conduction system pacing: a single-center prospective study.

To assess pacing and electrophysiological parameters, as well as mid-term outcomes, among patients undergoing His bundle pacing (HBP) guided by KODEX-EPD (a novel mapping system). Consecutive patients undergoing conduction system pacing (CSP) for bradycardia indications were evaluated. Procedural and fluoroscopic times and pacing characteristics were compared between conventional fluoroscopy (the standard group, N = 20 cases) and KODEX-EPD mapping system guided group (the KODEX group, N = 20cases) at CSP implantation and all patients were followed at 6-month.

[Analysis of factors related to systemic embolism in patients≥75 years old with non-valvular atrial fibrillation].

To explore the related risk factors for systemic embolism (SE) in patients aged≥75 years with non-valvular atrial fibrillation (NVAF). A case-control study. NVAF patients aged≥75 years who were hospitalized at the First Affiliated Hospital of Xinjiang Medical University from October 2018 to October 2020 were divided into no SE (=1 127) and SE (=433) groups according to the occurrence of SE after NVAF.

Right ventriculography improves the accuracy of leadless pacemaker implantation in right ventricular mid-septum.

Background: Implanting leadless pacemakers in the right ventricular (RV) apex is prone to causing pericardial tamponade and myocardial perforation.

Objective: To investigate the feasibility and safety of right ventriculography-guided implantation of Micra™ leadless pacemaker (Micra™, Medtronic, Minneapolis, MN, USA) in the RV mid-septum.

Methods: One hundred eight consecutive patients who underwent Micra™ implantation intended in the mid-septum were enrolled and randomized (3:1) into the radiography group (n = 81) with assistance of right ventriculography to illustrate the RV septum and the non-radiography group (n = 27).

In Vitro Drug Screening Using iPSC-Derived Cardiomyocytes of a Long QT-Syndrome Patient Carrying KCNQ1 & TRPM4 Dual Mutation: An Experimental Personalized Treatment.

Congenital long QT syndrome is a type of inherited cardiovascular disorder characterized by prolonged QT interval. Patient often suffer from syncopal episodes, electrocardiographic abnormalities and life-threatening arrhythmia. Given the complexity of the root cause of the disease, a combination of clinical diagnosis and drug screening using patient-derived cardiomyocytes represents a more effective way to identify potential cures.

Evaluation of safety and feasibility of leadless pacemaker implantation following the removal of an infected pacemaker.

Background: Leadless pacemakers provide safe and effective pacing options for patients with device-related infections. This study was aimed at observing and evaluating the safety and feasibility of extracting an infected pacemaker device followed by the implantation of a leadless pacemaker in the same location for patients without systemic infection.

Methods: Between December 2019 and September 2020, following a well-planned re-implantation strategy, pacemaker electrodes were removed from patients with device infection and leadless pacemakers were immediately implanted at our center.

Establishment of a predictive model for inpatient sudden cardiac death in a Chinese cardiac department population: a retrospective study.

Background: Little is known about the risk factors for sudden cardiac death (SCD) in the overall hospitalized cardiac department population. This study was conducted to investigate the risk factors and develop a predictive model for SCD in a hospitalized cardiac department population.

Methods: We conducted a retrospective study of patients admitted to the cardiac department of the First Affiliated Hospital of Xinjiang Medical University from June 2015 to February 2017.

Vagus nerve stimulation reduces ventricular arrhythmias and increases ventricular electrical stability.

Background: Transcutaneous stimulation of the auricular branch of the vagus nerve (AB-VNS) is a potentially noninvasive, inexpensive, and safe approach for vagus nerve stimulation that suppresses the induction and duration of atrial fibrillation and reduces sympathetic nerve outflow in healthy humans. Researchers have not determined whether AB-VNS affects ventricular arrhythmias.

Objective: To evaluate the antiarrhythmic effects of noninvasive AB-VNS on ventricular arrhythmias induced by myocardial infarction (MI).

[Relationship between new-onset atrial fibrillation and sympathetic neural remodeling in a canine acute myocardial infarction model].

Objective: To establish the canine model of new-onset atrial fibrillation (AF) after acute myocardial infarction (AMI), and explore the relationship between new-onset AF and sympathetic neural remodeling in this model.

Methods: Twenty four adult mongrel dogs were randomly divided into 4 groups by applying random number table. Group A (n=6): ligate the left circumflex artery (LCX).

Renal sympathetic denervation suppresses atrial fibrillation induced by acute atrial ischemia/infarction through inhibition of cardiac sympathetic activity.

Objective: This study aims to explore the effects of renal sympathetic denervation (RSD) on atrial fibrillation (AF) inducibility and sympathetic activity induced by acute atrial ischemia/infarction.

Methods: Acute ischemia/infarction was induced in 12 beagle dogs by ligating coronary arteries that supply the atria. Six dogs in the sham-RSD group did not undergo RSD, and six dogs without coronary artery ligation served as controls.