subject: Asd Closure Surgery In India At Mumbai And Delhi At Low Cost. [print this page] Atrial Septal Defect (ASD) Closure Using a Catheter-based Procedure
How is an ASD closed using a catheter-based procedure ?
Catheter-based procedures are commonly used to diagnose and treat heart-related problems. For example, catheter-based procedures are used to diagnose and treat clogged arteries and heart attacks. A catheter can also be used to guide the placement of an ASD device - which becomes a permanent implant - that will close the hole in the heart wall.
Asd Closure, Asd Closure Surgery India, Atrial Septal Defect Closure To further briefly explain what happens in an ASD catheter-based procedure, a cardiac catheterization involves slowly moving a catheter (a long, thin, flexible, hollow tube) into the heart. The catheter is initially inserted into a large vein through a small incision made usually in the inner thigh (groin area) and then is advanced to and into the heart. One or more tests will be done to measure the ASD and to be sure there are no other defects. An imaging test called angiography, (an injection of a certain type of dye followed by an x-ray motion picture) may be used to better visualize the heart.
An ultrasound imaging technique, to see the defect better and also to determine the size of the closure device needed, may be used. One technique, intracardiac echo (ICE), involves passing an imaging device up to the heart through the vein in the patient's other leg. Another technique uses an ultrasound probe passed down the esophagus (transesophageal echo, or TEE) to allow your doctor to see the heart structures and blood flow as the device is being placed. In addition, a special balloon on a catheter is moved to the area of the hole and inflated across the hole in order to measure the size of the hole when it is gently stretched.
An ASD closure device is moved through the catheter to the heart and specifically to the location of the heart wall defect. Once in the correct location, the ASD closure device is allowed to expand its shape to straddle each side of the hole. The device will remain in the heart permanently to stop the abnormal flow of blood between the two atria chambers of the heart. The catheter is then removed and the procedure is complete.
How long does the procedure take ?
The cardiac catheterization procedure for an ASD closure typically takes 1 to 2 hours to complete. A local anesthetic is used to numb the groin area where the catheter was inserted. Use of general anesthesia or sedation by IV is situation dependent -- depending on doctor preference and particular patient needs.
What types of ASD closure devices are there ?
Asd Closure Surgery India, Atrial Septal Defect Closure, Asd Closure Surgery Two main types of ASD closure devices are currently being used at the We Care India partner hospitals - the Amplatzer Septal Occluder System and the HELEX Septal Occluder.
The Amplatzer Septal Occluder consists of a two attached circular discs - a larger disc, which will reside facing the left atrium, sandwiched on top of a smaller disc, which will face the right atrium. These discs are made of polyester fabric encased by a wire mesh made of a nickel-titanium metal alloy. (Fig to right: Amplatzer Septal Occluder. Image, with permission, from AGA Medical Corporation).
The HELEX Septal Occluder consists of a circular wire frame made of a nickel-titanium metal alloy covered with a thin membrane made of Gore-Tex, a material that has been used in open-heart surgery for more than 20 years. Once the device is passed through the catheter it opens up to form one circular disk that covers the hole on the left side and one disc on the right side of the septum.
