Reimer J M, Reef V B, Sommer M
Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, New Bolton Center, Kennett Square 19348.
J Am Vet Med Assoc. 1991 Mar 1;198(5):880-2.
Pulmonic valve rupture was determined to be the cause of severe right-sided heart failure in a 20-year-old Thoroughbred gelding. A flail in the intermediate pulmonic valve cusp was detected by 2-dimensional echocardiography. Significant pulmonic and tricuspid valvular regurgitation were confirmed by Doppler echocardiography. Despite treatment, the horse's condition deteriorated, and euthanasia was performed. At necropsy, a tear in the pulmonary artery extending into the right valve cusp and a tear at the base of the intermediate valve cusp were identified at the junction of the right and intermediate pulmonic valve cusps. Careful echocardiographic evaluation of the pulmonic valve is warranted for horses with right-sided heart failure, for which more common causes cannot be found.
肺动脉瓣破裂被认定为一匹20岁纯种马严重右心衰竭的病因。二维超声心动图检测到肺动脉瓣中间瓣叶有连枷样改变。多普勒超声心动图证实存在明显的肺动脉瓣和三尖瓣反流。尽管进行了治疗，但马的病情仍恶化，最终实施了安乐死。尸检时，在右肺动脉瓣和中间肺动脉瓣叶交界处，发现肺动脉有一处撕裂延伸至右瓣叶，中间瓣叶基部也有一处撕裂。对于出现右心衰竭但未发现更常见病因的马匹，有必要对肺动脉瓣进行仔细的超声心动图评估。
