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?
great lecture out of all good lectures , just would like to say that 1.34 is constant for gram per Dl hemoglobin,to get it for Liter as COP is L per minute so we multiply this constant by 10 and it becomes 13.4 thanks again
Great video, gives you everything you need to use Fick's equation. Would have liked to understand the conceptual basis of how fick's principle works a bit more. Still gives more than enough to use proffesionaly in real life or on an exam. Great job.
We appreciate you checking out the video and for commenting! Sounds like we may need to come out with a sequel to this video including the things you recommended!
Exactly, though I will say that I have been taught to calculate the CaO2 and CvO2 with the partial pressure of dissolved oxygen too. the equation looks something like CaO2 = (SaO2*Hb*1.34) + (Pa02*0.003) and CvO2 = (SvO2*Hb*1.34) + (Pv02*0.003)
Thank you for your great and detailed explanation. It was very helpful and I have a better understanding of the Fick's principle, which I struggled to grasp the concept of it.
Love to hear that! Thanks for checking out the video and for the kind words! Have a mini series on ventilator scalars as well, if interested linked below: ru-vid.com/group/PLf5bMa9_tvRinTHdWwKFYBX7N5kfOBRHz&si=PgBIRUfUi_V39NQr
Love hemodynamics. We use the NICOM device. It’s noninvasive cardiac output monitoring. Every hospital in the system has been given them. You have four, expensive, electrodes, each with two contact points. 2 are on the upper chest to the clavicle and 2 upper abdominal , really over the lower ribs. It senses the blood flow as a moving column of fluid across the chest, and through bioreactance and measuring phase shifts and then applying a proprietary formula, they can measure stroke volume. It’s dynamic... you use a passive leg raise or a fluid bolus and measure pre and post. If the fluid challenge raises the SV more than 10%, you are “ fluid responsive. “ and by putting in weight , height, HR and BP, the entire gamut of hemodynamics variables can be calculated. Well, back to the salt mines...almost 1/2 of my service is CoVid.
That device sounds super interesting! We do not have access to that type of non-invasive fluid assessment. We still have many patients, especially in the CICU, that we float Swans on! Goodness, sounds like the COVID numbers are really ticking up for you. Stay safe and they are in good hands!
Actually I think it is a very good explanation, but there are some affirmations that arent true. CaO2= CaO2=(1.34 X Hgb X SaO2) + (0.003 X PaO2). 100% saturated Hg transports 1.34 mL of Oxygen, If PaO2 is not enought to keep Hg 100% saturated, then it would carry the porcentage of maximun Oxygen. Dissolved Oxygen its almoste depreciable, but correspond to the second part of the equation, 0.003xPaO2 thats disolved O2 in plasma
