Feline echocardiography

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Feline echocardiography

I am having difficulty getting good images/into proper position with my feline echo exams, any tips?

This is a 2 year old FN DLH with G 2/6 left sided heart murmur.

I think she has LV septal hypertrophy with SAM with normal LA size. I could not document turbulence of colour flow in LVOT and MR, is this because it is not there or my settings, what should I set the NL at please?

I am having difficulty getting good images/into proper position with my feline echo exams, any tips?

This is a 2 year old FN DLH with G 2/6 left sided heart murmur.

I think she has LV septal hypertrophy with SAM with normal LA size. I could not document turbulence of colour flow in LVOT and MR, is this because it is not there or my settings, what should I set the NL at please?

Is there an increased velocity from colour turbulence through the RVOT?

I have just realised my cine loops must be only 1 s long, I must figure out how to change that. 

Thank you!

Comments

EL
May 13, 2017 at 3:20 am -

The CF nyquist limit is too

The CF nyquist limit is too low and aliasing. The pw doppler shows 1 m/sec which is normal. Yoiu would have to do an apical view of the LVOT to check veloicity with pw or cw if higher velocity. i recommend the SDEP echo download to help you wiht the echo tips as this covers pretty much all you need to a full echo with Doppler

https://sonopath.com/products/downloadable

and the sdep echo poster to remind you of the progression

https://sonopath.com/products/poster

 

 

The LV looks a bit thicek subjectively but not likely a clinical issue.

veteurope1
May 13, 2017 at 8:45 am -

My issue in some cases is
My issue in some cases is that the colour disappears all together at a higher NL, even when using lower frequency probe, reducing sector width etc. I have the downloads but still not sure what my NL should be set at for flow across all the valves?
Is it 85-100 for mitral and aortic, and a little less for pulmonic and tricuspid?

Peter
May 16, 2017 at 9:02 am -

Hi!
Re your Doppler

Hi!

Re your Doppler issues;

Basically, I would set the PRF as follows:

  • Mitral valve, aortic valve, pulmonic valve: Nyquist limit 0.8-1.1 m/s
  • Tricuspid valve: Nyquist limit 0,5-0,6 m/s

If you see no color, what could have happened is:

  • gain too low
  • acoustic coupling not accurate (e.g. region of interest leaves the acoustic window in systole)
  • flow 90 degree to sound beam (try and angle the transducer a bit)

Re your images:

difficult to rule out SAM without a longer video, but: The flow does not look very turbulent here. re the septal hypertrophy: at least part of it seems to be a false tendon that mimics the left ventricular border of the septum. I think the septum is much thinner than you think. Re the RVOT/PV: I assume there is some turbulence within the RVOT that ends close to the PV (dynamic obstruction). This means there is some turbulence visible in your color image but this is likely the “end” of the turbulence, it starts closer to the transducer.

Re B-imaging: in cats, the microconvex transducer makes much better  B-images, if properly set. Alternatively, they just have released a high frequency PA probe that works very well in cats.

 

Best regards!

Peter

 

veteurope1
May 16, 2017 at 4:12 pm -

Thank you Peter, that is

Thank you Peter, that is fantastic. 

Peter
May 16, 2017 at 7:02 pm -

You’re welcome!
Thanks for

You’re welcome!

Thanks for posting!

Peter

randyhermandvm
May 19, 2017 at 12:42 pm -

Peter,
What is the number of

Peter,

What is the number of the high frequency PA probe?

Is is better than the CA123?

Is it compatable with the MyLab 30 Gold?

 

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