冠状动脉瘘
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冠状动脉瘘介入封堵术流程英文回答:Coronary artery fistula is an abnormal connection between a coronary artery and a chamber of the heart or another blood vessel. Interventional closure of coronary artery fistula is a minimally invasive procedure that aims to block or seal off the abnormal connection. The procedure involves accessing the fistula through a small incision or puncture in the skin and using specialized tools to place a closure device, such as a coil or a plug, at the site of the fistula.The first step of the procedure is to perform a thorough evaluation of the patient's medical history and conduct diagnostic tests, such as coronary angiography, to confirm the presence and location of the coronary artery fistula. Once the fistula is identified, the interventional cardiologist will determine the best approach for closure based on the size, location, and characteristics of thefistula.During the procedure, the patient is typically placed under local anesthesia or conscious sedation to ensure comfort. The interventional cardiologist will then insert a catheter into a blood vessel, usually through the groin or wrist, and guide it to the site of the fistula using fluoroscopy, a type of X-ray imaging. Contrast dye may be injected to visualize the blood flow through the fistula and aid in the placement of the closure device.Once the catheter is in position, the closure device is advanced through the catheter and positioned at the site of the fistula. The device is then deployed to block or seal off the abnormal connection. In some cases, multiple closure devices may be used to ensure complete closure of the fistula. After the closure device is in place, the interventional cardiologist will confirm its position and assess the blood flow through the coronary arteries to ensure proper closure.Following the procedure, the patient will be monitoredfor a period of time to ensure stability and recovery. Pain medication may be prescribed to manage any discomfort atthe incision site. The patient will typically be advised to avoid strenuous activities for a certain period of time and to follow up with the interventional cardiologist forfurther evaluation and monitoring.中文回答:冠状动脉瘘是冠状动脉与心脏腔室或其他血管之间异常的连接。
冠状动脉畸形冠状动脉瘘(coronary artery fistula,CAF)一、概述冠状动脉瘘是最常见的冠状动脉畸形,是指冠状动脉及其分支直接与心腔或大血管异常交通,可分为先天性或获得性。
1)先天性冠状动脉瘘发病率约占先天性心脏病的0.2%~0.4%。
2)极少数由于外伤、手术、心内膜心肌活检、冠状动脉介入性治疗、心脏移植、感染性心内膜炎等后天原因所致。
3)两者除病因不同外,其病理病生和临床表现大致相似。
本节主要介绍先天性冠状动脉瘘。
一、病因与发病机制1)冠状动脉和心腔间的异常交通是由于胚胎期间心肌中血管窦状间隙的发育障碍所引起。
2)冠状动脉与其他部位瘘的发生,可能是由于动、静脉的发育异常所致。
二、病理解剖冠状动脉瘘可发生于左冠状动脉或右冠状动脉,也可为双侧。
但以右侧多见,约占50%~60%,左侧冠状动脉瘘约占30%~40%,双侧冠状动脉瘘较少见,仅有2%~10%。
冠状动脉瘘可进入心脏和大血管的任何部位,其中引流入右心房、上腔静脉、冠状静脉、右心室、肺动脉等右心系统者最为常见,约占90%,而引流入左心房、左心室等左心系统者仅有10%。
其常见引流进入部位的顺序为:右室(40%)、右房(25%)、肺动脉(17%)、冠状静脉窦(7%)、左房(5%)、左室(3%)、下腔静脉(1%)。
异常交通的冠状动脉显著扩张、粗大或扭曲,壁薄如静脉,有时形成梭形扩张或囊状动脉瘤。
异常冠状动脉的开口较正常粗大,但末端瘘口较细小。
冠状动脉瘘口进入心脏和血管有如下三种类型:○1冠状动脉主支或分支末端瘘,一般为一个瘘口;○2瘘支动脉有多个瘘口或形成网状血管丛样交通用,极少数可形成弥漫性薄壁海绵状窦;○3瘘口位于冠状动脉主支的侧面,与心腔形成一侧壁交通,或冠状动脉明显扩张,形成冠状动脉瘤,从心脏表面不能确定瘘口的确切部位及大小。
冠状动脉瘘患者心脏可有不同程度的增大,其心脏腔室的大小与冠状动脉瘘所致的血流动力学改变密切相关。
升主动脉亦可扩张。