Aoki Takuma, Terakado Tomomi, Jingya Yao, Iwasaki Kentaro, Shimoda Hayato, Fukamachi Naoyuki, Miyamoto Takashi
Laboratory of Small Animal Surgery, Department of Veterinary Medicine, School of Veterinary Medicine, Azabu University, Sagamihara City 252-5201, Kanagawa, Japan.
Azabu University Veterinary Teaching Hospital, Azabu University, Sagamihara City 252-5201, Kanagawa, Japan.
Animals (Basel). 2024 Jun 8;14(12):1736. doi: 10.3390/ani14121736.
Ventricular septal defects (VSDs) can lead to congestive heart failure and pulmonary hypertension, particularly in patients with large shunts. However, no surgical treatment for feline VSD has been reported. Here, we elucidated the first surgical correction of an infundibular muscular VSD in a one-year-old Ragdoll cat, atypically located and classified under the Soto classification rather than the standard Kirklin classification, through cardiac arrest using cardiopulmonary bypass-a method rarely used in feline cardiac surgery. Detailed echocardiography revealed that the defect required intervention owing to left heart and main pulmonary artery enlargement. Despite the VSD being located on the contralateral side, as anticipated in the preoperative examinations, the choice of median sternotomy allowed for the successful closure of the defect. Conversely, the insertion of two cannulas into the ascending aorta resulted in damage to the adjacent thoracic duct, causing transient chylothorax, which was resolved with conservative treatment. Cardiac arrest induced by a cardioplegic solution facilitated the surgical procedure, although it leads to anemia in cats. However, on postoperative day 490, the patient exhibited only minor residual shunting, with normalized heart size, and remained healthy. This technique appears to be a viable treatment option for congenital heart disease in cats.
室间隔缺损（VSDs）可导致充血性心力衰竭和肺动脉高压，尤其是在分流较大的患者中。然而，尚未有关于猫VSD手术治疗的报道。在此，我们阐述了首例对一只一岁的布偶猫漏斗部肌性VSD进行手术矫正的案例，该VSD位置不典型，按照索托分类法而非标准的柯克林分类法进行分类，通过使用体外循环导致心脏骤停的方法——这是猫心脏手术中很少使用的方法。详细的超声心动图显示，由于左心和主肺动脉扩大，该缺损需要干预。尽管VSD位于对侧，正如术前检查所预期的那样，但选择正中胸骨切开术成功闭合了缺损。相反，在升主动脉插入两根插管导致相邻胸导管受损，引起短暂性乳糜胸，经保守治疗后得以解决。心脏停搏液诱导的心脏骤停有助于手术过程，尽管这会导致猫贫血。然而，在术后第490天，该患者仅表现出轻微的残余分流，心脏大小正常，且保持健康。这项技术似乎是治疗猫先天性心脏病的一种可行选择。
