| 中文名稱 | 馬匹及牛隻大動脈的 瓣膜 閉合不全，逆流 |
|---|
| 英文名稱 | Aortic valve insufficiency, regurgitation, in horses and cattle |
|---|
| 建立日期 | 2007/11/01 |
|---|
| 更新日期 | 2007/11/01 |
|---|
| 中文描述 | 大動脈閉合不全是一種馬匹心臟最常見的退化性病灶。纖維化和節結病灶出現在瓣膜，引起血液逆流。輕微的病灶很普遍，且可能是良性的，但可能會嚴重到引起問題。主要是全舒張期的心雜音，在大動脈瓣膜區域最強烈，並擴散到左心尖。受到抑制的脈搏顯示左心室過載並導致大動脈瓣膜閉合不全。可由心臟舒張時擺動前僧帽瓣小葉的心臟超音波證據確診。心臟舒張時大動脈瓣的擺動是一種特殊但不是絕對的症狀。大動脈瓣膜發育不良出現在一頭小牛。 |
|---|
| 英文描述 | Aortic insufficiency is one of the most common degenerative lesions of the equine heart. Fibrous and nodular lesions develop in the valves, leading to regurgitation of blood. Mild lesions are common and probably benign, but can be severe enough to cause problems. Murmur is primarily holodiastolic, with the point of maximal intensity over the aortic valve area and radiating towards the left cardiac apex. A bounding pulse indicates left ventricular volume overload and marked aortic insufficiency. Diagnosis can be confirmed by echocardiographic evidence of diastolic flutter of the anterior mitral valve leaflet. Diastolic flutter of the aortic valve is a specific but less consistent sign. Aortic valvular dysplasia was described in a calf. |
|---|