Health Packet
Is this vet familar with greyhounds? There is a different sound than other dogs. If I remember right, there is an echo type effect.
From Dr. Feeman's health packet:
HEART SOUNDS The heart sounds normally heard in healthy dogs are S1 (associated with closure tensing of the AV valves at the onset of systole) and S2 (associated with closure of the aortic and pulmonic valves at the end of the systole). In addition to these normal sounds, other sounds may be present, such as heart murmurs. Heart murmurs (abnormal heart sounds) are not usually part of the normal cardiac physiology, however, sometimes they are not clinically significant. The heart murmurs are described by their timing during the cardiac cycle as systolic (when the heart is emptying or diastolic (when the heart is filling). The intensity of a murmur is graded on a 1 to 6 scale, and its point of maximal intensity is located and described as apex (apical or lower part of the heart) or base (basilar or top portion of the heart). In 2006 we made the observation that a grade 1-2/ 6 left basilar systolic murmur was ausculted in many Greyhound blood donors, without evidence of abnormalities on echocardiograms, sometimes the murmur is not heard by auscultation of the heart, but the finding of a bruit (a heart sound heard over a vessel), which is heard using a stethoscope in the carotid artery in the neck, confirm the presence of the murmur. In our study, we found that the b1ood flow velocity in the aortic valve in the Greyhounds with murmurs was significantly higher than in the Greyhounds without murmurs. In conclusion, although a soft murmur is common in adult Greyhounds, it does not appear to be associated with a congenital defect (e.; it is normal in sight hounds) or any CBC differences unique to this breed. Due to these peculiarities in the Greyhound, we frequently receive referrals or consults of Greyhounds suspected of having heart disease, when indeed these findings are normal breed-related idiosyncrasies. This should be taken into account to avoid misdiagnosis and unnecessary medication.