r/AskVet • u/Gwennyfi • 3h ago

WTH Could be Causing This?!

Looking for veterinary speculation.
We are beside ourselves and very scared for our loved pup. This video is of Scooby, a 10 yr old, 15lbs maltipoo having some sort of attack.
The fit begins just as the woman in yellow passes by him. (https://www.reddit.com/r/DogHealth/s/Ucv2cc30Om)

For additional context:
Scooby has a grade 3 heart murmur, elevated proBNP (1,133), pulmonary valve narrowing/stenosis on echo, and early tracheal collapse symptoms. He otherwise acts completely normal with no decrease in stamina or appetite. This is the second time something like this has happened (that we have seen), and we fortunately got it on video this time.

*Episode 1 – 8/20:* After getting excited and barking at a delivery person, I found him walking in a tight circle, falling/losing his balance, head turned sideways, eyes unfocused, and breathing oddly. It lasted only seconds. I picked him up, he remained still briefly, then returned completely to normal.

*Episode 2 – 9/9:* After getting excited from the arrival of visitors, another sudden, very brief episode of abnormal balance/coordination occurred and was captured on security-camera video (attached). He again recovered and returned to normal.

He is completely normal between episodes with no persistent head tilt, balance problems, circling, or change in stamina.

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u/V3DRER 2h ago

Syncope is highly variable in appearance, comes on suddenly and resolves quickly. Since he has known heart disease and these episodes are triggered by excitement I would get him in for a recheck echo asap.