P156 TRANSCATHETER CLOSURE OF ATRIAL SEPTAL DEFECT IN OVER 60 YEARS OLD PATIENTS

Abstract

Abstract Background Ostium secundum ASD (ASDII) is the most common type of congenital heart disease in adults. Percutaneous closure has emerged as the first–line treatment for the majority of ASDII. However, the occurrence of Pulmonary Hypertension (PH) with combined pre– and post–capillary component may render ASD management challenging in elderly patients. Methods We report the hemodynamic data and clinical findings of elderly patients (> 60 years old) undergoing transcatheter closure of an ASDII at our department. Results From 2000 to 2021, 82 elderly patients were scheduled (mean age 65,4+ 4,4) of which 60 (73%) were female. Systemic arterial hypertension and supraventricular arrhythmias were the most common comorbidities accounting respectively 51% and 38% of cases. The right ventricular overload supported the ASD closure in 76 cases (93%) and paradoxical embolism in the remaining 6 (7%). 17 patients (21%) were in NYHA class III– IV. At right heart catheterization, 33 patients had normal pulmonary arterial pressure and 49 patients showed a mean pulmonary artery pressure > 20 mmhg. In the latter cohort, 33 showed a pulmonary artery wedge pressure (PAWP) < 15 mmHg (Group I) and 16 > 15 mmHg (Group II). The device implantation was completed in all patients except one with elevated pulmonary vascular resistance (PVR) of the Group I. For 14 patients of Group II, balloon occlusion test was required during the catheterization. ASD closure was achieved promptly in 10 patients. However, to reduce the risk of acute pulmonary oedema, in one case we created a small fenestration in the occluder device and in other case we retained the patency of additional defect (both patients exhibiting slightly PAWP increase during balloon occlusion test). In one patient showing significantly PAWP increase during balloon test, delayed ASD closure was performed ensuring the improvement of hemodynamic parameters at 3 months initiation of medical therapy with angiotensin–converting enzyme inhibitor and loop diuretic diuretics. For the remaining 4 patients, the percutaneous closure was not been done because of prohibitive hemodynamic parameters. Overall, ASD closure was performed successfully in 94% of cases. Conclusions Age and comorbidities are not absolute contraindications to ASDII percutaneous closure. In the complex cases, both medical therapies and balloon occlusion test may be use to support the decision–making process.