The Student Room Group

Acid base question

21 year old medical student (not me) is revising for his exams (seriously, its not me...) and keeps eating Liquorice. He has hypertension.

ABGs

elevated pH
normal bicarbonate
slightly low pCO2
low K+


what is going on there?

Yes it contains aldosterone, explains the hypertension and low K - but wud he not have a metabolic alkalosis - low pCO2 doesnt make any sense?

Its an exam question, not a real case, what are they getting at?
Original post by Vazzyb
21 year old medical student (not me) is revising for his exams (seriously, its not me...) and keeps eating Liquorice. He has hypertension.

ABGs

elevated pH
normal bicarbonate
slightly low pCO2
low K+


what is going on there?

Yes it contains aldosterone, explains the hypertension and low K - but wud he not have a metabolic alkalosis - low pCO2 doesnt make any sense?

Its an exam question, not a real case, what are they getting at?


Low pCO2 and alkalosis suggests hyperventilation - also from exam stress? I don't see an obvious unifying cause so two benign causes (liquorice for upBP and downK together with breathing for downCO2 and uppH) sounds like the sort of thing Oxford might do.

You're unlikely to get anything so obtuse on ?Tuesday?. At worst, dropping a few marks on a horrible question won't stop you from passing.
(edited 13 years ago)
Reply 2
? hypokalemia, refer to medics....

:biggrin: :biggrin:
Reply 3
Exam situation aside, why were they doing an ABG on him anyway?
Original post by bloody_student
? hypokalemia, refer to medics....

:biggrin: :biggrin:


I hate it when people write like this. [obv you were prob writing tongue in cheek]

Why do people put a question mark in front of a fact.
i.e rip roraringly infected person comes in and the clerking F1 uts
"imp: ?sepsis ?cause. Refer medics"
I thought I understood acid-base quite well last year. I totally didn't :frown:
Original post by Jamie
I hate it when people write like this. [obv you were prob writing tongue in cheek]

Why do people put a question mark in front of a fact.
i.e rip roraringly infected person comes in and the clerking F1 uts
"imp: ?sepsis ?cause. Refer medics"


Fan of the Medical Registrar facebook page?
Reply 7
Original post by Jamie
I hate it when people write like this. [obv you were prob writing tongue in cheek]

Why do people put a question mark in front of a fact.
i.e rip roraringly infected person comes in and the clerking F1 uts
"imp: ?sepsis ?cause. Refer medics"


I was joking indeed, loads of people hate it

I'm sure we've all heard the "? Dark ? cause, refer to medics" orthopod jokes
Reply 8
lol ?death

Yeah it might be that he was hyperventilating you're right. So two causes of alkalosis, id expect a really high bicarbonate. It was actually on the exam, this year - I was just curious

Thanks for your help though!
Reply 9
yay i guessed hyperventilation :p:

Quick Reply

Latest

Trending

Trending