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Kaplan Qbank USMLE



Author4 Posts
  #1

In FA, DKA is one of the causes of hypokalemiashocked, well this just can't be true unless they mean on the ttt of DKA pts may develope hypokalemia d t intracellular shift of K..

Anther is that diuretics cause Hypernatremia?? well can someone name a diuretic that retains Nashocked ( so by definition, not at all effective to perform its func-->diuresis)

Don't take everything for granted, thats why i think its better to study from a couple of sources, not just onegrin


  #2

I think as you said yourself in DKA we have a state of hypokalemia which only shows itself after treatment, it doesn't show itself before because of extracellular shift of the k, to make H+ go in the cell.
the second one is wrong, but in case of hypernatremia if you give furosemide it will aggravate hypernatremia, because it causes half isotonic saline diuresis-->we lose more water compared to salt. I remember having such a thing in step 1. I guess it was comparing it to HTCZ for example, but this is all I remember now. (in case of hypernatremia : furosemide+free water replacement corrects it)

  #3

ya & another thing is that diuretics may cause dilutional hypernatremia, as a matter of fact i think this is quite rare, I only read about it in books as they say that diuretics increase excretion of both Na & H2O but the second with a greater loss leading some sort of hypernatremia,

I still believe FA is an amazing resource for revising, so i like using it beside Kaplan as I'm adding a few points here & there, then ill only go through it together with UW notes at the last five days..

Thnx Khorshid, appreciate it


  #4

I think you meant dehydrational hypernatremia, cirus..hm? just confirming, when you said dilutional. cos you are losing more water than salt.







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