The Fick Principle for Determining Cardiac Output

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In this lesson we are taking a look at a method for calculating cardiac output for our patients without knowing their stroke volume. This method was discovered in 1870 but allows us to get a pretty accurate measure of their cardiac output just knowing their oxygen consumption, arterial oxygen concentration, and venous oxygen concentration. Then using the Fick Principle we can plug all these values in and determine the CO. There are some pitfalls that come with this which are discussed in this lesson as well.
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0:00 Intro
1:39 Cardiac Output
3:11 The Fick Principle
4:46 Calculation
9:28 Direct vs Indirect
13:36 Need to Know
15:00 Examples
17:42 Pitfalls
19:25 Wrap up

#ICUAdvantage #Fick #FickPrinciple

[ICUAdvantage]

NOTES for this lesson (and all previous lessons) are availably only to YouTube and Patreon members. Links to join both here ⬇

[fionarob]

I had my first CRNA interview today and got accepted right on the spot. Your videos helped me a ton, and your explanations are amazing! Thank you so much!!!

[rezgatchi]

Im new in Critical Care and your videos has been a big help in my transition from an Obs and Gyne Nurse to a Critical Care Nurse.
From womb to tomb 😅

Thank you for all your amazing videos💕

[AmberU]

Wowwww! Omg I have not seen this method since I worked CICU at U of M i tried to explain this to ppl and no one has a clue what this is ! I had to do this on graph paper literally sigh yes math class indeed! I will never forget FICK!

[othmanekaidi]

Superb! Readings didn’t yield any results, yet a video made it suddenly all clear. I can’t thank you enough. God bless you

[heatherfree]

Perfect timing, I have 3 right heart caths today! A brief explanation of what we do with that CO or CI number would’ve been good ending

[flightsimmer]

Speaking in general for all your videos!! They are all great and fantastic. Very educational and informative even though you're not an ICU nurse. I have seen them all👍👍👍👍

[nriiii]

Thanks for the video!
As a german (even though I consider myself a grown-up) I had to giggle the whole time ;D

[younesaissaoui]

Great video. I just want to point out that values of CO should be in L/min/m2 (indexed CO). Thaks a lot for your efforts.

[jeremyj]

This is good stuff. I'm not even in the ICU and I watch and enjoy your content. I hope to be one day. Keep up the great content.

[bonbon]

🔥🔥🔥 content!!! Idk how to make this any simpler. Thank you so much!!

[roland.j.ruttledge]

Always informative and well presented. Many thanks Roland UK

[prof.dr.huseyinbozbas]

Great presentation, quite understanding

[jonathane]

Great video! I'm a new ICU nurse and I've been watching your content since nursing school. I did had a question though. How practical is the Fick Principal and when is it used? In terms of measuring fluid/volume status, a general ICU assessment seems enough. Is this principle applied more in scenarios of mechanical-assisted devices, post-MI's or transplants?

[wex_]

The hospital I work at uses the equation 12.5 / 1.36(SaO2-SVO2)xHgb instead to calculate the Fick CI. Do you know why? What’s the 12.5 for?

[NaomiSiambulo]

I don't understand the unit that the height and weight is given in to get that BSA please laborate

[avinabd]

Where is the solubility coefficient in the formulae?? 0.003*pao2

[droopingsnoot]

I REALLY misread the title of this video at first

[jvictoraa]

Hello,
I love your channel and watch several videos.
Would you help me?
A 50-year-old patient with BSA 2.04, SVcO2 93%, SaO2 100%, Hgb 7.1 g/dl, without intracardiac shunts, but anesthetized. Why is the result so absurd? My result would be 38 liters! Where is the error?

[RobyVicary]

What is more accurate than the direct Fick method? How did we come to know it is 8% inaccurate?