Electro-Anatomical Approach to Membranous Septal Aneurysm: Potential as a Focus of Critical Ventricular Arrhythmias
نویسندگان
چکیده
Membranous septal aneurysm (MSA) is a rare anomaly and known to cause ventricular tachycardia and atrioventricular block. However, underlying mechanisms have not been addressed in its long history. We report first 3-D electro-anatomical mapping of MSA during and three years following the surgery. An elderly patient underwent a surgery for MSA. In the mapping, we located the His bundle near MSA and observed delayed potentials around MSA. Our report showed that electrophysiological character of myocardium was changed around MSA and this change might be a reason for ventricular tachycardia and atrioventricular block. An ordinary surgery for MSA might not resolve this problem since we still observed delayed potentials three years after the surgery.
منابع مشابه
An incidental aneurysm of the interventricular membranous septum.
Aneurysm of the interventricular membranous septum is a very rare cardiac anomaly in the absence of ventricular septal defect. We report the case of a 22-year-old man with aneurysm of the interventricular membranous septum incidentally determined during aortic valve surgery. The patient underwent successful aortic valve replacement and aneurysm repair. Patients with the aneurysm of the interven...
متن کاملAuscultatory Recognition of Aneurysm of the Membranous Ventricular Septum Associated with Small Ventricular
The clinical diagnosis of aneurysmal formation of the membranous ventricular septum associated with a small ventricular defect has been made previously only by means of angiocardiography. Active movement of the aneurysm during cineangiocardiography suggested the possibility of a corresponding auscultatory event. When careful auscultatory and phonocardiographic examinations were performed on 21 ...
متن کاملAneurysm of the Membranous Septum with Interventricular Septal Defect Producing Right Ventricular Outflow Obstruction.
ANEURYSM of the membranous portion of the interventricular septum is an uncomrnon congenital cardiac malformation rarely diagnosed during life. To our knowledge the literature contains four previous cases.14 Two of these were confirmed at surgery,3' 4 the other two were visualized by angiocardiography alone.1 2 This is the report of an unusual case in which the aneurysm produced hemodynamically...
متن کاملSubpulmonary obstruction in congenitally corrected transposition of the great arteries due to ventricular membranous septal aneurysms.
The clinical, hemodynamic, and angiographic observations, as well as the surgical approach used for repair in three patients with congenitally corrected transposition of the great arteries and ventricular membranous septal aneurysms, are presented. In two of the three patients the membranous septal aneurysm caused subpulmonary obstruction, with 94 and 125 mm Hg systolic gradients. In each patie...
متن کاملAn association between left axis deviation and an aneurysmal defect in children with a perimembranous ventricular septal defect.
Conspicuous left axis deviation was found in two thirds (27 patients) of 44 children with a perimembranous ventricular septal defect, echocardiographic signs of apposition of the septal tricuspid valve leaflet, and an aneurysm of the membranous septum. In 10 patients earlier electrocardiograms did not show left axis deviation; this feature appeared when the aneurysm of the membranous septum was...
متن کامل