Document Detail

Rupture of the right auricle in broiler chickens.
MedLine Citation:
PMID:  16236569     Owner:  NLM     Status:  MEDLINE    
This report describes a case of cardiac right auricle rupture (RAR) in a flock of 11,500 broilers that were 14 days old. The birds were housed at an altitude of 300 m, with an external temperature of -10 degrees C and an internal temperature of 15 degrees C. There was 3.6% mortality, due to sudden deaths, from 10 to 14 days of age. All necropsied birds had haemopericardium due to RAR at the point of the junction with the vena cava, and 85% of them had blood in the oral cavity and external acoustic meatus. The vena cava and its caudal branches, the intestinal vessels, and the sinus durae matris and sinus saggitalis were distended. Histological examination showed haemorrhages into the myocardium, degeneration of the cardiac muscle fibres, as well as oedema of the lungs and hypertrophy of the smooth muscle bundles of the parabronchial walls. Blood in the mouth of the broilers may have been due to haemoptysis, which in humans is caused mainly by mitral stenosis. In broilers, mitral stenosis and/or insufficiency, and left ventricular failure with consequent pulmonary hypertension (PH) were considered as possible triggers for right ventricular failure. The alarm reaction in hypoxaemia, due to secondary factors such as cold, caused tachycardia and tachypnoea, may have induced further elevation of PH, and acute myocardial infarction causing cardiac rupture and haemopericardium in this case. Hypertension and PH, due to possible mitral stenosis/insufficiency in association with acute myocardial ischaemia, were probably the determinant factors causing this acute episode. This opens the possibility that the RAR may be cardiogenic.
Petros A Bougiouklis; Georgia Brellou; Ioanna Georgopoulou; Prodromos Iordanidis; Ioannis Vlemmas
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Publication Detail:
Type:  Case Reports; Comparative Study; Journal Article    
Journal Detail:
Title:  Avian pathology : journal of the W.V.P.A     Volume:  34     ISSN:  0307-9457     ISO Abbreviation:  Avian Pathol.     Publication Date:  2005 Oct 
Date Detail:
Created Date:  2005-10-20     Completed Date:  2006-04-19     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8210638     Medline TA:  Avian Pathol     Country:  England    
Other Details:
Languages:  eng     Pagination:  388-91     Citation Subset:  IM    
Clinic of Avian Medicine, 11 St. Voutyra str., Thessaloniki, 54 627, Greece.
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MeSH Terms
Heart Atria / pathology*
Heart Rupture, Post-Infarction / etiology,  pathology,  veterinary*
Histological Techniques / veterinary
Hypertension / complications,  veterinary*
Poultry Diseases / etiology*,  pathology*

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