Navigation Links
Novel Catheter Technique Successfully Patches Holes in the Heart

A novel catheter technique for patching holes in the heart may make it possible for many patients to avoid surgery altogether and others to regain enough strength to safely undergo surgical repair at a later date, according to a study reported at the 30th Annual Scientific Sessions of the Society for Cardiovascular Angiography and Interventions, May 912, 2007, in Orlando, FL.

The patch successfully closed ventricular septal defects(VSDs)or ruptures in the wall between the right and left ventriclesin nearly all patients, allowing blood to circulate normally again and relieving fluid back-up in the lungs. After recovery, patients were able to return to active lives.

"Patients with acute VSDs may be critically ill with heart failure and perhaps be in cardiogenic shock," said Matthew W. Martinez, M.D., a cardiology fellow at the Mayo Clinic in Rochester, MN. "This procedure offers an alternative for patients who are too sick to undergo emergency heart surgery or simply don't want surgery."

To track the long-term effectiveness of the catheter procedure, Dr. Martinez and his colleagues reviewed the medical records of 10 patients treated with the VSD patch between 1995 and 2005. Of these, 5 patients experienced rupture of the ventricular wall, or septum, as a result of a heart attack. In the other 5 patients, the VSD was an unintended consequence of a previous heart surgery.

In all cases, the VSD allowed a portion of the blood in the left ventricle to shoot backward into the right ventricle with each heart beat, rather than being circulated to the rest of the body. As a result, patients were experiencing such severe heart failure they were short of breath at rest or with minimal activity, and were judged to have New York Heart Association class 3 and 4 heart failure.

A variety of patches were used in the study, but all were some form of AMPLATZER Occluder (AGA Medical Corp., Plymouth, MN). The VSD patch is composed of two discs connected by a thick shaft. The discs are made of flexible nitinol metal and covered in polyester fabric that encourages heart tissue to grow over the discs, completely covering them during healing.

Before implantation, the flexible double-disc patch is pulled into a catheter, collapsing and compressing it lengthwise. It is then threaded through a vein into the right ventricle and across the rupture into the left ventricle. The patch is pushed partially out of its catheter sheath until the first disc pops open. The catheter is then withdrawn back into the right ventricle, with the first disc positioned against the left ventricular wall and the connecting shaft filling the hole created by the rupture. From inside the right ventricle, the patch is pushed forward again, releasing the second disc, which covers the rupture on the right side of the heart.

Implantation of the VSD occluder was performed by Donald J. Hagler, M.D., FSCAI, a professor of pediatrics in the Divisions of Pediatric Cardiology and Cardiovascular Diseases at the Mayo Clinic. The procedure was successful in all patients, without complications. One patient died 5 days later of illness unrelated to the VSD patch. In 2 patients, the rupture didn't fully heal, causing damage to blood cells as they jetted through the narrow opening. A third patient developed a bacterial infection that started several months after device implantation. The patch was removed and all 3 patients had successful surgery to repair the rupture.

Even in such cases, the VSD patch serves its purpose by allowing patients to regain enough strength to withstand surgery, Dr. Martinez said. "Surgery is the long-term answer for some patients," he said. "In such cases, the VSD occluder successfully bridges the patients to surgery."

After a follow-up that averaged more than 1 year, patients were feeling markedly better and were much more active, even able to cl imb a flight of stairs before becoming short of breath. All patients were ranked in New York Heart Association class 2 or better.


'"/>




Related medicine news :

1. Novel "CYCLOSPORINE CAPSULE FORMULATION" to be launched
2. Novel biopsy technique for prostate cancer
3. Novel computer model for breast cancer
4. Novel research on liver cancer
5. Novel way to fight cancer
6. Novel test for bowel cancer
7. Novel Anti-Neutrophilic Effect produced by Salmeterol in mild asthma patients
8. Novel Therapy for Chronic Problem
9. Blood Sugar Kept In Control By Novel Protein
10. Novel antibiotic dressing developed for improved wound healing
11. United Kingdom Is Lagging In Novelty In The Field Of Pharmaceuticals
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:2/24/2017)... ... 2017 , ... In the Health Care IT campaign, Robert Herjavec discusses health ... if you will be attacked, but when.” However, he and many others involved highlight ... , Improvements in auditing and monitoring have taken security in health care a very ...
(Date:2/24/2017)... ... ... The narrative in “ Signal 8: An Australian Paramedic’s Story ” (published by ... Schanssema describes the tragedies he saw, as well as his struggles with grief and ... unsure of the career path he wanted to take, found fulfillment in a career ...
(Date:2/24/2017)... ... February 24, 2017 , ... Yisrayl Hawkins, Pastor and Overseer ... Prophecy concerning this present generation. Yisrayl makes an astounding statement when he says ... He explains that the Bible details the current times so plainly that anyone should ...
(Date:2/24/2017)... ... February 24, 2017 , ... The Radiology Business Management ... radiology marketing programs at the annual Building Better Radiology Marketing Programs conference, ... Hotel in Fort Worth, Texas. Nine awards are given out in five categories. They ...
(Date:2/24/2017)... ... 2017 , ... Castle Farms, the celebrated Northern Michigan ... the winning couple announced on Feb. 14, 2017, on Facebook. The free wedding ... A Matter of Taste, Ryan Rousseau Enterprises, A Touch of Spring and Other ...
Breaking Medicine News(10 mins):
(Date:2/24/2017)... , Feb. 24, 2017  Xynomic Pharmaceuticals, Inc., ... announced that it has acquired exclusive worldwide rights ... best-in-class innovative HDAC inhibitor targeting hematological and solid ... 14 Phase 1 and 2 clinical trials of ... have already been completed, demonstrating that ...
(Date:2/23/2017)... SEOUL , Südkorea, 23. Februar 2017 ... LED für Sterilisationsaufgaben vorgestellt. Die Sterilisationsleistung beträgt das 1,5-fache ... kurzwellige ultraviolette Strahlung im Bereich zwischen 200 und 280 nm ... Ausbreitung von Bakterien, indem es ihre DNA zerstört. Das ... 280 nm. ...
(Date:2/23/2017)... , 23. Februar 2017 Im Rahmen ... eine nationale Wirtschaftszone in der südwestlichen chinesischen Provinz Guizhou, 2017 ... Errichtung einer Innovationsplattform aktiv an der Entwicklung einer eingebetteten Hightech-Schlüsselindustrie. ... Continue Reading ... ...
Breaking Medicine Technology: