Abstract
A three-month-old female Rottweiler puppy was referred for intravascular correction of a previously identified cor triatriatum dexter. Echocardiography confirmed the presence of a hyperechoic membrane that divided the right atrium into a cranial and caudal chamber. A foramen in this membrane allowed the blood to flow from the caudal to the cranial chamber. Balloon dilation of the defect under transthoracic echocardiographic guidance was scheduled for the following day. The dog was premedicated with 0.5 μg/kg sufentanil and 0.2 mg/kg midazolam administered intravenously. General anaesthesia was induced with 2 mg/kg propofol and maintained with inhaled isoflurane in oxygen; at the same time, a constant rate infusion of 0.5 μg/kg/h sufentanil was administered by means of an infusion pump. Uneventful ventricular and supraventricular tachyarrhythmias developed during the placement of catheters and balloon dilation. At the end of procedure, when the guide wire and balloon catheter were removed, normal sinus rhythm was observed. To the authors’ knowledge, no previous reports have described the anaesthetic management of a balloon dilation procedure for cor triatriatum dexter in dogs.
Highlights
Cor triatriatum dexter (CTD) is a rare congenital defect caused by the failure of the right sinus venosus valve to regress during embryogenesis [1]
To the authors’ knowledge, no previous reports have described the anaesthetic management of a balloon dilation procedure for CTD in dogs
Conclusions a definitive conclusion cannot be made from a single case, the balanced anaesthesia used for the threemonth-old puppy described in this report assured good patient haemodynamic stability for the safeness of this minimal invasive balloon dilation technique
Summary
Cor triatriatum dexter (CTD) is a rare congenital defect caused by the failure of the right sinus venosus valve to regress during embryogenesis [1]. To the authors’ knowledge, no previous reports have described the anaesthetic management of a balloon dilation procedure for CTD in dogs.
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