Uploaded September 2024 | Updated September 2026, 3 days ago

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In this video, we look at kidney dialysis, which is also called haemodialysis. First we look at how a kidney dialysis machine works. We focus on the concentration gradients established between the blood and the dialysis fluid and why this is an example of a countercurrent exchange system. We then look at peritoneal dialysis.

Image credits:

Blood containers
commons.wikimedia.org/wiki/File:Vacutainer_blood_bottles.jpg
Tannim101, CC BY 3.0 creativecommons.org/licenses/by/3.0, via Wikimedia Commons

Kidney for transplant
commons.wikimedia.org/wiki/File:Kidney_for_transplant_from_live_donor.jpg
Rmarlin, CC BY-SA 4.0 creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons

Dialysis machine
commons.wikimedia.org/wiki/File:Dialog-dialysis-machine-b-braun.jpg
Jonas@sodratornet.se, CC BY-SA 4.0 creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons

Dialysis machine INNOVA
commons.wikimedia.org/wiki/File:Hemodialysis_machine_INNOVA.jpg
Виталий Поспелов, CC BY-SA 3.0 creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons

Plugged into dialysis
commons.wikimedia.org/wiki/File:Plugged_into_dialysis.jpg
Dan from United Kingdom, CC BY 2.0 creativecommons.org/licenses/by/2.0, via Wikimedia Commons

Salt shaker
commons.wikimedia.org/wiki/File:Salt_shaker_on_white_background.jpg
Dubravko Sorić SoraZG on Flickr, CC BY 2.0 creativecommons.org/licenses/by/2.0, via Wikimedia Commons

Chicken salad
commons.wikimedia.org/wiki/File:Chicken_salad_on_striped_tablecloth.jpg
Kotivalo, CC0, via Wikimedia Commons

Glass of water
commons.wikimedia.org/wiki/File:Glass-of-water.jpg
Derek Jensen (Tysto), Public domain, via Wikimedia Commons

Peritoneal dialysis
commons.wikimedia.org/wiki/File:Peritoneal_dialysis.jpg
Manu5, CC BY-SA 4.0 creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons