ECG from asymptomatic dog

Re: ECG from asymptomatic dog

Michael Woodhouse — Wed, 11 Sep 2013 09:40:06 GMT

Wow. Will look harder! Thanks

Re: ECG from asymptomatic dog

Mike Martin — Wed, 11 Sep 2013 09:39:12 GMT

You are correct it is not a consistent effect. However having been involved in preclinical trials, reading thousands of ECGs for a similar drug, these bradyarrhythmias occur in ~20% of cases and scary VT in 1-3%.

Re: ECG from asymptomatic dog

Michael Woodhouse — Wed, 11 Sep 2013 09:33:16 GMT

It's not a consistent effect. We routinely use 3 lead ecg as part of our anaesthetic monitoring on everything but the quickest of ops, and I have never seen them do that.

Medetomidine in every pre-med.

Re: ECG from asymptomatic dog

Mike Martin — Wed, 11 Sep 2013 09:15:53 GMT

My first thought would be this is an effect of the medetomidine....

Re: ECG from asymptomatic dog

John Flynn — Tue, 10 Sep 2013 23:53:20 GMT

[quote user="robloxley"]I always wonder about connecting the ECG leads up for routine GAs, but always wonder what I'd do differently in response...[/quote]

Use less medetomidine

Re: ECG from asymptomatic dog

Rob Loxley — Tue, 10 Sep 2013 23:30:27 GMT

[quote user="AmeliaB"]Now going to dig out the ecg leads more often for routine surgeries![/quote]

I always wonder about connecting the ECG leads up for routine GAs, but always wonder what I'd do differently in response...

Re: ECG from asymptomatic dog

AmeliaB — Tue, 10 Sep 2013 19:01:57 GMT

Has anyone seen this before?

Re: ECG from asymptomatic dog

AmeliaB — Tue, 10 Sep 2013 19:00:57 GMT

Not possible to do anything meaningful with this dog awake. Metadom wierdness is high on the list. Now going to dig out the ecg leads more often for routine surgeries!

Re: ECG from asymptomatic dog

Thomas Johnson — Tue, 10 Sep 2013 18:13:56 GMT

Is it possible to listen to its heart when it's awake to check the rhythmand rate? Or to get the owner to put their hand on its chest when it's resting at home to check the rythm and rate? It could be entirly due to the medetomidine...

Re: ECG from asymptomatic dog

Linda Filshie — Tue, 10 Sep 2013 18:13:33 GMT

Was this while the dog was actually anaesthetised or post-anaesthetic? I assume the former as you mention the dog is unfriendly. Ketamine associated myocardial weirdness?

Edit: have just seen your post, which answers my Q about when the ECG was taken. Any signs of arrhythmia in the conscious dog (or can you not get close enough to check?)

Re: ECG from asymptomatic dog

AmeliaB — Tue, 10 Sep 2013 18:11:01 GMT

Sorry forgot to mention not sinus arrhythmia, breathing was regular with normal character. Unfortunately didn't print out other leads, ECG not normally part of our routine GA monitoring. Nurse heared the abnormality and attached them to be thorough

Re: ECG from asymptomatic dog

James Laidlaw — Tue, 10 Sep 2013 18:00:18 GMT

Any association with breathing? Sinus rhythm?

Re: ECG from asymptomatic dog

Michael Woodhouse — Tue, 10 Sep 2013 17:56:58 GMT

Have you got any more? Just a single lead?

I'd like to see if the bit between S-T was repeated on other leads.

Obviously some arrhythmia.