Ventricular Septal Defect (V.S.D.) Occlusion by AMVO |
What is a ventricular septal defect (VSD)?
A congenital defect occurring in the ventricular septum, the wall separating the lower chambers of the heart known as ventricles, is known as the ventricular septal defect. As a result oxygen-rich red blood passes from the left ventricle, through the opening in the septum, and then mixes with oxygen-poor blue blood in the right ventricle. If not treated, this can lead to lung disease due to a larger volume of blood passing from the right ventricle through the pulmonary artery into the lungs, thereby causing higher pressure than normal in the blood vessels in the lungs. |
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What is a VSD occlusion and what is an AMVO?
VSD occlusion is a method currently being used to close some VSDs through the use of a device called a septal occluder. An AMVO or an AMPLATZER Membranous VSD Occluder is a percutaneous, transcatheter occlusion device intended for occlusion of significant perimembranous ventricular septal defects (VSD) in the membranous ventricular septum. It is a self-expandable, double disc device made from a Nitinol wire mesh.
How is the procedure done?
- The patients receive a dose of an appropriate antibiotic (commonly Cephazolin at 20mg/kg) during the catheterization procedure)
- The child is sedated and a small, thin flexible tube is inserted into a blood vessel in the groin and guided into the heart.
- Once the catheter is in the heart, the cardiologist will pass the septal occluder into the VSD.
- The septal occluder closes the ventricular septal defect providing a permanent seal.
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Cardiology
Dr. Zainal Hamid
MBBS, FRCP, MRCP (UK)
Cardiothoracic
Dr. N. Arunachalam
MBBS, FRCS (Edin), AM (Mal)
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