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One response to “Acute onset murmur”
If the dog is not
If the dog is not clinically normal and since the EPIC criteria are obviously not met (LA:AO 1.4), I would not recommend starting Pimobendan now.
As you said, this is likely some acute chordal rupture. But if it was rupture of a main chordae then the dog would be in acute CHF even though sizes are normal. These dogs usually have very tall E-waves on mitral inflow (> 1.4 m/s). In this case I would still start with Pimobendan even though the EPIC criteria are not met.
Otherwise a re-check will be necessary.
If the owners can’t afford this, I would go for re-check xrays in 3 months.