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asthma Q

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jean robert
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06/23/07 - 02:41 PM

A 15 y.o. white boy with history of severe asthma presents to the emergency department in obvious respiratory distress.After admission and multiple nebulizer treatments, he develops nausea, vomiting,weakness.Studies reveal a K+ level of 2.6 mEq/L and U waves on ECG. Which of the following medications may have elicited these symptoms?

a.-Ipratropium
b.-Prednisone
c.-Theophylline
d.-Zileuton
e.-Albuterol

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06/23/07 - 02:46 PM

c.-Theophylline ??

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new_n_lost
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06/23/07 - 02:49 PM

c.-Theophylline

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faraym
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06/23/07 - 05:03 PM

C

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me007
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06/23/07 - 05:49 PM

how theophylline would decrease K+?

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06/23/07 - 06:14 PM

me007 wrote:
how theophylline would decrease K+?

Theophylline causes intracellular shift of potassium.

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jean robert
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06/24/07 - 08:50 AM

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me007
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06/24/07 - 09:28 AM

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06/24/07 - 10:09 AM

E ?

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jean robert
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06/24/07 - 11:10 PM

#10

E. Albuterol is the correct answer.

they don t really give a great explanation in the book.
They just mention that Beta agonist cause poatassium to shift into cells, resulting in hypokalemia.
This question is from FIRST AID Q&A FOR THE USMLE STEP1.
Someone else has a better explanation???

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tompat
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06/25/07 - 02:38 AM

#11

yes E
one of the common cause of hypokalemia is albuterol doses.
also associated with glucose insulin drip to hyperkalemic pt. severe asthmatic attack leads to metabolic n respiratory acidosis.
this is the time when we intubate pt. also multiple albuterol nebulizations given.

drduck
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06/26/07 - 10:02 AM

#12

hey i thought prednisolone.........
if he is on steriods for long he can easily develop hypokalemia.............might be taking dexamethasone on regular basis??????????

anyway i got the answer.....
i want to ask one Q....
is albuterol like salmeterol a long acting beta agonist????

i dont know what is the answer....but if it is then it shud not be given in acute conditions.

someone help!!!!!

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