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calf with heart murmur
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<blockquote data-quote="Lucky_P" data-source="post: 833325" data-attributes="member: 12607"><p>Not a heritable trait - just an 'accident' during fetal development. Not really anything that you can do - at least not in an economically feasible manner. If it were a human baby, you'd probably spend hundreds of thousands of dollars trying to fix it.</p><p> </p><p>I see lots of congenital cardiac anomalies at necropsy - most are interventricular septal defects - a hole between right and left ventricles of the heart - would cause a heck of a murmur if you got to listen to it - but most just turn up dead with no abnormal clinical signs noted. Next most common abnormality that I see is anomalous transposition of the left coronary artery to the pulmonic trunk - but that wouldn't cause a murmur, just cardiac failure, as the left ventricle would be supplied with low oxygen and lower blood pressure.</p><p>See an occasional patent ductus arteriosis or other cardiovascular anomalies, like Tetralogy of Fallot, but IVS and ALCAPA comprise the majority I've seen over the past 20+ years.</p><p></p><p>Had a calf born in my own herd a couple of years back that I thought had pneumonia, about 7-10 days out from birth - treated it with Baytril, and it seemed to get better(I was imagining it!) for a couple of days, but then crashed and burned. When I performed a necropsy, I found that it essentially had only one ventricle(the left), so oxygenated & deoxygenated blood were constantly mixing and being pumped through both the pulmonary and systemic circulatory systems, as both the aorta and pulmonic trunk originated from that one ventricle.</p></blockquote><p></p>
[QUOTE="Lucky_P, post: 833325, member: 12607"] Not a heritable trait - just an 'accident' during fetal development. Not really anything that you can do - at least not in an economically feasible manner. If it were a human baby, you'd probably spend hundreds of thousands of dollars trying to fix it. I see lots of congenital cardiac anomalies at necropsy - most are interventricular septal defects - a hole between right and left ventricles of the heart - would cause a heck of a murmur if you got to listen to it - but most just turn up dead with no abnormal clinical signs noted. Next most common abnormality that I see is anomalous transposition of the left coronary artery to the pulmonic trunk - but that wouldn't cause a murmur, just cardiac failure, as the left ventricle would be supplied with low oxygen and lower blood pressure. See an occasional patent ductus arteriosis or other cardiovascular anomalies, like Tetralogy of Fallot, but IVS and ALCAPA comprise the majority I've seen over the past 20+ years. Had a calf born in my own herd a couple of years back that I thought had pneumonia, about 7-10 days out from birth - treated it with Baytril, and it seemed to get better(I was imagining it!) for a couple of days, but then crashed and burned. When I performed a necropsy, I found that it essentially had only one ventricle(the left), so oxygenated & deoxygenated blood were constantly mixing and being pumped through both the pulmonary and systemic circulatory systems, as both the aorta and pulmonic trunk originated from that one ventricle. [/QUOTE]
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