Dr. Najeeb, I am confused about your comments regarding total 02 delivered to tissues. You said 250ml/min... can you explain further? I thought 250ml of 02 is used (not delivered), as 1000ml/min is delivered based on formulas: CaO2 = (Hgb x SaO2 x 1.34) + (PaO2 x 0.03) and then applying DaO2 = CaO2 x CO x 10
It is indeed 250mlO2 deliverd to tissues per min because 5ml of oxygen is deliverd per minute per 100ml of blood so since cardiac output= 5L/min so 100ml of blood delivers 5ml O2, 5000ml delivers 5/100x1000 = 250ml/min. at 40mmHg Hb is 75% saturated (from O2-Hb curve) thus 25%O2 delivered. At 95mmHg (100%Hb sat) 20 mlO2/100ml blood is deliverd, thus 25% represents 5 ml/100ml of blood ^^
hello doc, i hoped to find something about FEV1 , FVC & FEV1% because it is so confusing to study from my doc's lectures ... i hope u post some cus u know how to reach our brains :)
The equation for glucose breakdown is C6H12O6 + 6 O2 --> 6 CO2 + 6 H2O
There are 12 oxygens in the 6 diatomic oxygen molecules, so it's possible for all 12 atoms to end up in the 6 CO2 (NOT in the H2O at all). The reason the ratio of CO2 exhaled to O2 inspired is 0.8 (200/250) is because (1) some O2 is used to make molecules that STAY in your body, so you don't lose it, and (2) some CO2 is lost from your kidneys as bicarb (HCO3-) rather than as a gas from your lungs.
Hello Dr. Najeeb, I hope it is OK to post a question here. You state that the "lungs are providing the body with 250 ml of oxygen every minute" but doesn't some of that oxygen come from macronutrients such as the glucose (C6-H12-O2) that you drew in the equation? I hope you can clarify. Thanks so much.
Really enjoyed your explanations!!! was very helpful sirl!! Wish I had you has my prof!!!when will you upload more lectures!! Thank you!! I am a great fan of your videos!!!
Of course hes Indian lol
gobais53 3 months ago
Do you gain access to more videos with paying for a subscriptions because I need mor eRespiratory help? Thanx Dr. Najeeb very helpful...
CHRISTINATHEBELOVED 4 months ago
@CHRISTINATHEBELOVED subscriptions are free
MissNichole09 4 months ago
Dr. Najeeb, I am confused about your comments regarding total 02 delivered to tissues. You said 250ml/min... can you explain further? I thought 250ml of 02 is used (not delivered), as 1000ml/min is delivered based on formulas: CaO2 = (Hgb x SaO2 x 1.34) + (PaO2 x 0.03) and then applying DaO2 = CaO2 x CO x 10
jamessoler 6 months ago
It is indeed 250mlO2 deliverd to tissues per min because 5ml of oxygen is deliverd per minute per 100ml of blood so since cardiac output= 5L/min so 100ml of blood delivers 5ml O2, 5000ml delivers 5/100x1000 = 250ml/min. at 40mmHg Hb is 75% saturated (from O2-Hb curve) thus 25%O2 delivered. At 95mmHg (100%Hb sat) 20 mlO2/100ml blood is deliverd, thus 25% represents 5 ml/100ml of blood ^^
Hope you understood!:)
mrsflyingkiss 5 months ago in playlist More videos from DoctorNajeeb
hey random but does anyone know if you can watch youtube videos faster? like on a higher speed like you can on windows media player?
jenck89 6 months ago
hello doc, i hoped to find something about FEV1 , FVC & FEV1% because it is so confusing to study from my doc's lectures ... i hope u post some cus u know how to reach our brains :)
muslim0youth 8 months ago
The equation for glucose breakdown is C6H12O6 + 6 O2 --> 6 CO2 + 6 H2O
There are 12 oxygens in the 6 diatomic oxygen molecules, so it's possible for all 12 atoms to end up in the 6 CO2 (NOT in the H2O at all). The reason the ratio of CO2 exhaled to O2 inspired is 0.8 (200/250) is because (1) some O2 is used to make molecules that STAY in your body, so you don't lose it, and (2) some CO2 is lost from your kidneys as bicarb (HCO3-) rather than as a gas from your lungs.
WashU med student :)
matchbook80 9 months ago
awesome teacher .. stupid students .. i wish i has such teacher
micistan 9 months ago in playlist Advanced Physio
my ID IS hana!
hanasia2011 1 year ago
i paid for one month for his videos and i am telling you if you are some one like me who needs to learn the basics he is the best.
hanasia2011 1 year ago
simply the best med teacher in youtube!
kavirus26 1 year ago
Excellent class !!! Thank you so much Sir...
blessyjacob 1 year ago
Hello Dr. Najeeb, I hope it is OK to post a question here. You state that the "lungs are providing the body with 250 ml of oxygen every minute" but doesn't some of that oxygen come from macronutrients such as the glucose (C6-H12-O2) that you drew in the equation? I hope you can clarify. Thanks so much.
:) Krista
vivakris 1 year ago
cheers dr. najeeb :D very detailed, thank you!
dessiechong 1 year ago
Great great videos!!! very informative and very clear!!!
Thanks!
gililoven 1 year ago
really,, you are the best thank you dr najeeb... and if upload all your lectures please.....
vegliberationx 2 years ago
Please upload all your lectures. You are the best!
crp600 2 years ago
@crp600 Agreed!
ToobYew 1 year ago
Really enjoyed your explanations!!! was very helpful sirl!! Wish I had you has my prof!!!when will you upload more lectures!! Thank you!! I am a great fan of your videos!!!
ketosimba 2 years ago