机械瓣膜阻塞是关键的医疗和外科紧急情况,当患者出现新的投诉并表现出诸如杂音发作或机械瓣膜咔嗒声消失的迹象时,需要立即引起注意。障碍物可能由各种原因引起,包括血管郁积的形成,血栓,植被,或瓣下组织生长。虽然以前已经报道过二尖瓣血管nus形成,它们在主动脉瓣中很少见,并且已经提出了一些假设来理解血管内皮谱的形成。准确的诊断依赖于成像技术,如超声心动图和透视,手术干预被认为是最佳治疗方法。这里,我们介绍了一名69岁的女性,该女性先前曾接受过主动脉瓣置换术,随后出现进行性呼吸困难,疲劳,和新发作的杂音。成像方式显示小叶闭合,瓣膜上有较高的跨瓣梯度。病人接受了人工重做瓣膜置换术,手术后,她出院回家没有并发症。
Mechanical valve obstructions are critical medical and surgical emergencies that require immediate attention when patients present with new complaints and exhibit signs such as the onset of murmurs or the disappearance of mechanical valve clicks. Obstructions can arise from various causes, including pannus formation, thrombus, vegetations, or subvalvular tissue growth. While pannus formations have been previously reported for the mitral valve, they are less commonly observed in the aortic valve, and several hypotheses have been proposed to understand pannus formation. Accurate diagnosis relies on imaging techniques such as echocardiography and fluoroscopy, and surgical intervention is considered the optimal treatment approach. Here, we present the case of a 69-year-old female who had previously undergone aortic valve replacement and subsequently developed progressive dyspnea, fatigue, and a new onset murmur. Imaging modalities revealed a closed leaflet and a high transvalvular gradient over the valve. The patient underwent a prosthetic redo valve replacement, and post-surgery, she was discharged home without complications.