Anaesthetic management of a dog with a bidirectionally shunting patent ductus arteriosus and concurrent pulmonary hypertension

A 1-year-old, 9.8-kg (21.6-lb), female, spayed Pembroke Welsh corgi dog was presented for evaluation of previously diagnosed patent ductus arteriosus and severe pulmonary hypertension. In the veterinary literature, there is relatively little information related to the anaesthetic management of patients with patent ductus arteriosus and severe pulmonary hypertension (or in those with Eisenmenger pathophysiology). In this case report, we consider haemodynamic concerns related to anaesthesia in this clinical setting, while describing the successful management of this case and related complications.