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Old 03-21-2012
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Urine Sample Urine PH after McDonlad's Meal!

A 18 year old young girl just ate a very tasty yummy Big Mac from Mcdonald's with extra cheese What is the best predictor of her urine pH?

A. 6.1
B. 9.9
C. 7.3
D. 4.2
E. 5.0
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Old 03-21-2012
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Ans B ....... since all others are acidic
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Old 03-22-2012
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Should be E ?
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Old 03-22-2012
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B........?
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Old 03-22-2012
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I think it would be C)...?
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Old 03-22-2012
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I think it would be C)...?
second that
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Old 03-22-2012
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fatty meal---> acid secretion----> physiological chloride shift----> alkalemia----> renal compensation------> alkaline pH
so i'd go with B
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Old 03-22-2012
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Originally Posted by theundead View Post
fatty meal---> acid secretion----> physiological chloride shift----> alkalemia----> renal compensation------> alkaline pH
so i'd go with B

Wow ....... it would be great if you can explain it in a little more detail .....

thanks
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Old 03-22-2012
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again and again it should be acidotic !! high protein and fat meal causes more acidic urine !! normally should not be lower than 4.5 so its 5 !!

now Im like God :sorry: please dont me
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Old 03-22-2012
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It's E"............
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Old 03-23-2012
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Quote:
Originally Posted by Hitman View Post
Wow ....... it would be great if you can explain it in a little more detail .....

thanks
i haven't read this anywhere, but this is what makes sense to me. Secreting HCl into stomach causes increased HCO3 in blood, leading to alkalemia. The kidney should compensate for this by getting rid of the excess HCO3, causing alkaline urine
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Old 03-23-2012
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Quote:
Originally Posted by theundead View Post
i haven't read this anywhere, but this is what makes sense to me. Secreting HCl into stomach causes increased HCO3 in blood, leading to alkalemia. The kidney should compensate for this by getting rid of the excess HCO3, causing alkaline urine
dear thoundead .. when u eat u secreat HCl .. but U don't loose it !!

and " in case " alkalosis occurs here after this meal ... kidneys don't compensate immediately !!
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Old 03-23-2012
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^^ i may be wrong, but if you are suggesting that urine should be acidic, please explain how, & out of the 4 acidic pH options, which one would be correct & why not the other low pH ones?

now that the OP has been banned, we may never know the answer to this question
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Old 03-23-2012
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Quote:
Originally Posted by theundead View Post
^^ i may be wrong, but if you are suggesting that urine should be acidic, please explain how, & out of the 4 acidic pH options, which one would be correct & why not the other low pH ones?

now that the OP has been banned, we may never know the answer to this question
me not sure neither .. but the point Im sure of that western diet proteins increase blood acidosis .. fat and carbohydrate at normal situations increase it a little bit ..

I know normal daily urine Ph should be ranges between 4.5 to 8 .. so I excluded the 4.2 and 9 choices .. The meal here is reach with protein and fat .. and supposedly they asked about it effects on urine ( they didn't determined when exactly ) but it should make it more acidotic .. now why 5 not 6 I m not sure but I just went with the lowest one !!

respiratory compensation should function here more rapidly ..

I found this in Wikipedia ..
http://en.wikipedia.org/wiki/Urine

pH
The pH of urine is close to neutral (7) but can normally vary between 4.6 and 8. In persons with hyperuricosuria, acidic urine can contribute to the formation of stones of uric acid in the kidneys, ureters, or bladder.[13] Urine pH can be monitored by a physician[14] or at home.
A diet high in citrus, vegetables, or dairy can increase urine pH (more basic)[dubious discuss]. Some drugs also can increase urine pH, including acetazolamide, potassium citrate, and sodium bicarbonate.[citation needed]
A diet high in meat can decrease urine pH (more acidic).[citation needed] Cranberries, popularly thought to decrease the pH of urine, have actually been shown not to acidify urine.[15] Drugs that can decrease urine pH include ammonium chloride, chlorothiazide diuretics, and methenamine mandelate.[16


waiting for the answer !!
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Old 04-15-2012
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Quote:
Originally Posted by Joanna View Post
dear thoundead .. when u eat u secreat HCl .. but U don't loose it !!

and " in case " alkalosis occurs here after this meal ... kidneys don't compensate immediately !!
You are not really correct about the alkalosis. The phenomenon is called alkaline tide- increased secretion of HCl in the stomach increases HCO3 in the blood.

I don't know the answer, though. Can anyone help please?
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