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Peer-reviewed veterinary case report

Cat with heart block and persistent truncus arteriosus heart defect

By Monge-Utrilla, Oscar et al.·Published in Veterinary medicine and science·2023·Veterinary Hospital University of Le&#xf3, Spain·View original on PubMed

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Original publication title: Atrioventricular dissociation in a cat with persistent truncus arteriosus.

Species:
cat

Plain-English summary

A 10-month-old female domestic shorthaired cat was brought in for severe breathing problems, including rapid breathing and a bluish color. The veterinarian found a weak pulse and abnormal heart sounds, and tests showed serious heart issues. Unfortunately, the cat was diagnosed with a congenital heart defect called persistent truncus arteriosus, which was confirmed after she passed away. This case highlights the serious heart problems that can occur in young cats with this condition.

People also search for: cat breathing problems · persistent truncus arteriosus in cats · cat heart disease symptoms

Abstract

A 10-month-old female domestic shorthaired (DSH) cat was presented with peracute respiratory problems. Physical examination revealed dyspnoea, tachypnoea, cyanosis, weak pulse and bradycardia. Auscultation showed pulmonary crepitation and attenuated heart sounds and a pansystolic grade V/VI murmur. The electrocardiogram showed atrioventricular dissociation identified as third-degree sinoatrial block. X-rays showed increased density in the ventral and middle zones of the thorax and loss of definition of the cardiac silhouette and increased diffuse radiographic density of the entire abdomen. Echocardiography revealed dilatation of the right atrium and concentric biventricular hypertrophy. A type 1 persistent truncus arteriosus was diagnosed at necropsy. This is the first case report of this type of arrhythmia in a cat with persistent truncus arteriosus, and its relationship with the described congenital cardiac anomaly is discussed.

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Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/37029758/