doyoudig
Forum Guru
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a 16 year old boy has been admitted to the peditric intensive care unit after having sustained head truama in a motor vehicle acciedent. he is on mechanical ventilation and is heavily sedated and paralyzed. he is currently recieving maintence intrevanous fluids through a centrally placed cathere.He also has an arterial catheter in his right radial artery.His serum sodium has been decreasing over the past two days and it is now 121 mEq/L.The intensivest feels that the reason for his hyponatreimia is due to SIADH.Which of the followings will be consistent with this diagnosis
A high intravascular volume and high urine sodium
B low intravascular sodium and very high urine sodium
C low intravascular volume and low urine sodium
D normal intravascular volume and high urine sodium
E normal intravascular volume and normal urine sodium
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| khorshid
Forum Guru
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Posts: 591
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Ok I guess there is a controversy here that you're asking this q from me.
I am between A and B. But I'll go with A.
what is the right answer ?
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| doyoudig
Forum Guru
Topics: 144
Posts: 613
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yes A is the right answer, it is just as u said.
The ECF will appear euvolemic in Pt w/ SIADH but Blood Volume will be high b/c of inapproprite water retention.
Whereas CSWS ECF will be low & Intravs will be low
thx for all ur help on this topic
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| khorshid
Forum Guru
Topics: 32
Posts: 591
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you're welcome
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