Step I First Aid & Osteomalacia/Rickets

[BlackNDecker]

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Anyone else notice they assoc. Osteomalacia with increased serum PO4-? That doesn't make much since considering the compensation to 👎 Ca2+ (due to 👎 Vit D) is 👍 PTH.

PTH would cause renal excretion of PO4- --> 👎 serum PO4-.

The only circumstance I am aware of with simultaneous 👍 PTH and 👍 PO4- is CRF.

 

[Idiopathic]

Certainly not the norm. PO4 should be down obviously. There are some cases (lit search) of increased renal tubular resorpytion of PO4 in these px but very rare and not the normal case.

 

[DOCTORSAIB]

Anyone else notice they assoc. Osteomalacia with increased serum PO4-? That doesn't make much since considering the compensation to 👎 Ca2+ (due to 👎 Vit D) is 👍 PTH.

PTH would cause renal excretion of PO4- --> 👎 serum PO4-.

The only circumstance I am aware of with simultaneous 👍 PTH and 👍 PO4- is CRF.

If you look in the FA 2006 Errata thread, this was one of the mistakes noted. Serum PO4- should be DOWN in Osteomalacia.

Be aware that 2nd edition of BRS Path says "variable" for serum PO4- levels.

I'm sticking with "down." In fact, there was a Qbank question asking this exact question. The right answer was "down." G'luck.

 

[BlackNDecker]

If you look in the FA 2006 Errata thread, this was one of the mistakes noted. Serum PO4- should be DOWN in Osteomalacia.

Be aware that 2nd edition of BRS Path says "variable" for serum PO4- levels.

I'm sticking with "down." In fact, there was a Qbank question asking this exact question. The right answer was "down." G'luck.

I read about the first 20 in the errata thread and got tired of reading all the mistakes in FA 😴

 

[velo]

Another mistake!!!

I found this one the other day. It says "cytochrome P450s." That should obviously be "cytochromes P450," does anyone edit this crap!?!?!

 

[BlackNDecker]

does anyone edit this crap!?!?!

Yeah, several thousand of us every year. Unfortunately, FA doesn't do anything with our submissions...