The Journal of thoracic and cardiovascular surgery
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J. Thorac. Cardiovasc. Surg. · Jun 2024
Efficacy of a surgical cardiac ablation clamp using nanosecond pulsed electric fields: An acute porcine model.
To examine the effectiveness of a recently developed nonthermal technology, nanosecond pulse-field ablation (nsPFA), for surgical ablation of the atria in a beating heart porcine model. ⋯ The novel nsPFA clamp device was effective in creating acute conduction block and transmural lesions in both the right and left atria in an acute porcine model. This nonthermal energy source has great potential to both shorten procedural time and enable effective ablation in the beating heart.
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J. Thorac. Cardiovasc. Surg. · Jun 2024
Right Ventricular Sizing and Pulmonary Vascular Resistance: How Much Mass Do You Need?
Right ventricular (RV) donor-recipient sizing has been demonstrated to be a sensitive predictor for mortality after heart transplantation. We sought to understand the relationship between donor-recipient RV mass (RVM) ratio and pulmonary vascular resistance (PVR) on outcomes after heart transplantation. ⋯ RVM ratio and recipient PVR are independent predictors of 1-year mortality. Still, a larger RV mass may be utilized to mediate the effects of an elevated PVR.
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J. Thorac. Cardiovasc. Surg. · Jun 2024
Outcomes of extracardiac Fontan operation: A single institution experience with 398 patients.
The study objective was to evaluate the outcomes of the extracardiac Fontan operation at a single institution. ⋯ Rates of failure of the Fontan circulation are low after the contemporary extracardiac Fontan operation. Risk factors for failure of the extracardiac Fontan circulation include right ventricular dominance, aortic atresia, and elevated pulmonary artery pressures.
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J. Thorac. Cardiovasc. Surg. · Jun 2024
Surgical outcome of mitral valve surgery in atrial functional mitral regurgitation compared with degenerative etiology.
To analyze and compare the outcomes of mitral valve surgery for atrial functional mitral regurgitation (AFMR) and for degenerative mitral regurgitation (DMR). ⋯ AFMR was associated with acceptable outcomes of mitral valve surgery, and mitral valve repair is a good treatment option. However, significantly more patients were in junctional rhythm after the maze procedure, needing more permanent pacemaker insertion.