Sumerkan Mutlu Cagan, Cetin Sukru, Helvaci Fusun Behramoglu, Yaslikaya Sendag Satilmis, Karabay Umut, Hamit Turgun, Gurdal Ahmet, Agirbasli Mehmet, Alyan Omer
Department of Cardiology, University of Health Sciences Turkey, Sisli Hamidiye Etfal Training and Research Hospital, Istanbul, Turkey.
Department of Internal Medicine, University of Health Sciences Turkey, Sisli Hamidiye Etfal Training and Research Hospital, Istanbul, Turkey.
Egypt Heart J. 2022 Jun 15;74(1):49. doi: 10.1186/s43044-022-00287-5.
Left ventricular false tendon (LVFT) is a fibromuscular band crossing the left ventricular cavity. And Chiari's network (CN) is a highly mobile, mesh-like, echogenic structure in right atrium. In this study, we aimed to evaluate the coexistence of LVFT in patients with CN. CN patients were examined with live/real-time three-dimensional transthoracic echocardiography (TTE) for visualization of LVFT.
This is a single-center prospective study of 49 patients with CN. In literature studies, the average ratios of LVFT were 22% in the normal population. In our study, an increased ratio of LVFT (n = 31, 63.3%) was found in CN patients evaluated with a three-dimensional TTE (63.3% versus 22%) (p = 0.01). The interatrial septal aneurysm was found in 31 (63.3%) patients with CN. And, the positive contrast echocardiography examination was determined in 22 (61.1%) patients with CN.
Our study reveals that CN is associated with LVFT and is also associated with cardiac anomalies like an interatrial septal aneurysm, and atrial septal defect. And LVFT can be evaluated better with three-dimensional TTE than with traditional two-dimensional TTE. Patients with CN should be evaluated more carefully by three-dimensional echocardiography as they can be in synergy in terms of the cardiac pathologies they accompany.
左心室假腱索（LVFT）是一种穿过左心室腔的纤维肌性带。而Chiari网（CN）是右心房内高度可移动的、网状的、回声增强结构。在本研究中，我们旨在评估CN患者中LVFT的共存情况。对CN患者采用实时三维经胸超声心动图（TTE）检查以观察LVFT。
这是一项对49例CN患者的单中心前瞻性研究。在文献研究中，正常人群中LVFT的平均比例为22%。在我们的研究中，采用三维TTE评估的CN患者中LVFT比例增加（n = 31，63.3%）（63.3%对22%）（p = 0.01）。31例（63.3%）CN患者发现房间隔瘤。并且，22例（61.1%）CN患者经对比增强超声心动图检查呈阳性。
我们的研究表明，CN与LVFT相关，也与房间隔瘤、房间隔缺损等心脏异常相关。与传统二维TTE相比，三维TTE能更好地评估LVFT。CN患者应通过三维超声心动图进行更仔细的评估，因为它们在伴随的心脏病变方面可能存在协同作用。
