Role of computed tomography angiography in the differentiation of feline truncus arteriosus communis from pulmonary atresia with ventricular septal defect

Atrioventricular dissociation in a cat with persistent truncus arteriosus

“…Clinical signs were present from 3 week to 6 months of age (Buergelt & Suter, 1968 ; Chuzel et al., 2007 ; Kochi et al., 2021 ; Markovic et al., 2017 ; Nakao et al., 2021 ; Nicolle et al., 2005 ), but our patient did not show any clinical signs until 10 months of age. The initial examination detected a cardiac murmur (Bertrand et al., 2019 ; Chuzel et al., 2007 ; Kochi et al., 2021 ; Markovic et al., 2017 ; Markovic et al., 2017 ), exercise‐induced tachypnoea (Chuzel et al., 2007 ; Markovic et al., 2017 ; Nakao et al., 2021 ), tachypnoea and cyanosis (Nakao et al., 2021 ; Nicolle et al., 2005 ), and weakness and slow development in the 3‐week‐old male (Buergelt & Suter, 1968 ). In our case, the patient presented with acute respiratory signs and, unlike the previous cases, cardiac arrhythmia.…”

“…The previously described feline cases affected were DSH cats, four males (Bertrand et al, 2019;Buergelt & Suter, 1968;Chuzel et al, 2007;Markovic et al, 2017) and three females (Kochi et al, 2021;Nakao et al, 2021;Nicolle et al, 2005) as the case we describe.…”

“…Persistent truncus arteriosus in cats has been described in seven prior publications. In five cases, the type 1 persistent truncus arteriosus (Bertrand et al., 2019 ; Chuzel et al., 2007 ; Markovic et al., 2017 ; Nicolle et al., 2005 ) was the same as that described in this study, in two cases the defect was described as type II (Buergelt & Suter, 1968 ; Nakao et al., 2021 ) and the last one as type III (Kochi et al., 2021 ) under the Collet and Edwards ( 1949 ) classification.…”

“…Case reports that include electrocardiography describe sinus rhythm with deviation to the right (Markovic et al., 2017 ) and premature ventricular complexes (Nicolle et al., 2005 ). A differential aspect of our case is the finding of an electrocardiographic alteration: a conduction disturbance with an atrioventricular dissociation, third‐degree sinoatrial block with presence of P´ waves posterior to the QRS complex; these P´ waves were positive and more marked in leads I and III.…”

Key considerations in the approach to congenital heart disease in dogs and cats

“…2019), complex CHD of the outflow tracts (Markovic et al . 2017) and many other vascular abnormalities (Henjes et al . 2011, Sebastian‐Marcos et al .…”