The apical impulse on the left should be stronger than on the right (if the opposite is true, it suggests significant cardiomegaly). Structured guide to auscultation procedureĪfter trying to make the environment work as best you can, the first step in auscultation is palpation of the thorax bilaterally. A commonly used method of gently touching the nasal planum or stroking the larynx during auscultation was not tested in this paper, but seems to be a relatively effective way to cause a break in the purring sounds and thereby hear the heart more effectively. This reported that 7 percent of cats could not be stopped from purring, but turning on a nearby tap seemed to work effectively in over 80 percent of cases. One study was published to look at various methods of trying to interrupt cats from purring during auscultation (Little et al., 2013). Holding closed the mouth of a panting dog often does not stop the background noise and may increase patient stress. Most animals that pant or purr heavily during auscultation can be distracted from this for a few moments to obtain a clearer assessment of heart sounds, by a person doing something surprising, the noise of a whistle or somebody opening the door. We can recruit an extra person to help restrain the patient or to provide sufficient distraction.
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