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The left atrial appendage is a pouch-like structure located in the upper part of the left atrium. [1] Left atrial appendage occlusion (LAAO) is an alternative therapy to oral anticoagulation in a certain subset of patients with atrial fibrillation.
He is most well known for being the principal investigator of the SIRS (Steroids in Cardiac Surgery) trial and the LAAOS III (Left Atrial Appendage Occlusion Study) trial. [1] On April 9, 2015, Whitlock and his team performed the first transcatheter aortic valve implantation on a pregnant woman in the world. [2]
Rotation of the catheter to a "home view" of the left atrium through the mitral valve into the left ventricle. From there, a 180° rotation will face the posterior wall and posterior deflection will bring the left atrial appendage into view and can be used for deployment of a left atrial appendage occlusion device.
In atrial fibrillation, [13] the left atrial appendage fibrillates rather than contracts resulting in blood stasis that predisposes to the formation of blood clots. [9] Because of consequent stroke risk, surgeons may choose to close it during open-heart surgery, using a left atrial appendage occlusion procedure. [18]
From the right atrium, visualization of the interatrial septum, all four cardiac chambers, all four valves, and the pericardial space (for an effusion) can be readily visualized. It can also be advanced across the atrial septum into the left atrium to visualize the left atrial appendage during left atrial appendage occlusion device deployment.
Left atrial appendage occlusion devices; Additionally, there are, at times, indications to remove these devices and extraction (ie, removal) of these devices can also be performed by electrophysiologists. Once implanted, long-term clinical follow up and reprogramming of implanted devices also falls to the electrophysiologist.
CAD can occur in any of the major vessels of the coronary circulation: the left main stem, left ascending artery, circumflex artery, and right coronary artery, and branches thereof. CAD symptoms vary from none, to chest pain only when exercising (stable angina), to chest pain even at rest (unstable angina).
The Cox maze procedure, also known as maze procedure, is a type of heart surgery for atrial fibrillation. "Maze" refers to the series of incisions arranged in a maze -like pattern in the atria . Today, various methods of minimally invasive maze procedures, collectively named minimaze procedures , are used.
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