©1994-2009 All Rights Reserved. Online Journal of Veterinary Research. You may not store these pages in any form except for your own personal use. All other usage or distribution is illegal under international copyright treaties. Permission to use any of these pages in any other way besides the before mentioned must be gained in writing from the publisher. This article is exclusively copyrighted in its entirety to OJVR publications. This article may be copied once but may not be, reproduced or re-transmitted without the express permission of the editors
Online Journal of Veterinary Research©
Volume 11 (2):62-66, 2007
Auscultatory findings of cardiac murmurs in clinically healthy dairy cattle
Rezakhani A, Zarifi M.
Department of Clinical Studies,
Rezakhani A, Zarifi M., Auscultatory findings of cardiac murmurs in clinically healthy dairy cattle, Online J Vet Res, 11 (2) 62-66, 2007. Three hundred clinically healthy Holstein cattle aged 1-12 months, 12-36 months and >36 months were auscultated on both sides of the cardiac area of the chest and on mitral, aortic, pulmonary and tricuspid valve areas by two clinicians with a Littman type stethoscope and sensor stethoscope (meditron). The prevalence of heart murmurs was 47.7%; diastolic murmurs 11.2% and systolic murmurs 88.8%. The timing of 94.4% of murmurs was in early to early to mid and the intensity of 93% was grade 1/5 to grade 3/5. The PMI of 52.4%, 8.4%, 17.5% and 21.7% was heard over the pulmonic, aortic, mitral and tricuspid valves, respectively. This study showed that cardiac murmurs in clinically healthy dairy cattle are common and the majority are functional.
Key words: cattle, cardiac, murmurs, heart