Good day. Dominic Barfield here, and this is the obviously clinical podcast. Thank you for listening and thank you for subscribing on your smartphone or generic fruit race device. I'm really grateful for you taking the time to download and listen to this podcast. We don't ask for much for a return. We're incredibly grateful if you could pop to Apple podcast, daycast, Spotify, wherever you get your podcast and leave us a review. Obviously, a five-star review would be great, but I really appreciate a couple of moments here all the time and do that.

So today joining Brian and myself in the studio is Kat Jenkinson, one of our fantastic residents in internal medicine here at the RVC.

Thank you for joining Katz.

Thank you so much for having me, Dom.

And we thought you gave a sort of seminar to the hospitals today about er erythrocytosis and thought it would be a good topic to tell more people about.

So maybe if it could start by asking Kat, what is erythrocytosis?

Yeah, so erythocytosis is an increase in red blood cell concentration within the blood.

Often we recognise it with increased hermaticret and PCV or even blood hemoglobin as well.

But something that is very uncommonly encountered a lot of the time, especially when we think about what we call true

erythocytosis, where you have an absolute increase in your red blood cells within your blood.

But yeah, definitely worth mentioning because it still can be encountered in general practice

and can be caused by lots of different things and definitely

can cause patients a lot of clinical detriment as well. So even though we have the opposite

problem with two few red blood cells like anemia is a far more common presenting clinical

picture, the opposite problem is definitely of concern as well.

Can I ask why is it a problem? I suppose maybe we should also carry it.

There's many reasons of it why you could have a higher PCV or hermata crit and it might

be to do with your volume status of the patient as well. So whether you've got chronic

GI losses and losses from your intravasida volume.

But yeah, but how does this occur?

Like sort of when, why do you get increase of red blood cells?

Yeah, so I guess that's a very good point.

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