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DU PA Nep/Potas/Mine

Duke PA Potassium Homeostasis and Mineral Metabolism

QuestionAnswer
normal potassium levels 3.4-5.5
normal potassium intake __ mEq/day 100
how much potassium is in a medium bannana __ mEq 8
how much potassium is in the extracellular compartment __ mEq 65
how much potassium is in the intracellular space __ mEq 3000-4000
serum potassium of about 7-9 will lead to peaked t waves
serum potassium of >= 10 will lead to ventricular fibrillation
If the extracellular concentration of K+ increases from 4 meq/L to 6.5 meq/L, the membrane potential is reduced by roughly ___ half
___ doesn't change the level of K+ in the body but it does modify myocardial excitability calcium chloride
___ in the situation of hyperkalemia has an onset of 1-3 minutes and a duration of 30-60 minutes calcium chloride
___ in the situation of hyperkalemia, has an onset of 5-10 minutes and a duration of 2 hours glucose and insulin
___ increases intracellular uptake of potassium glucose and insulin
___ in the situation of hyperkalemia, has an onset of 30-40 minutes and a duration of 2-6 hours albuterol, 1-2 neb treatments
___ increases intracellular uptake of potassium albuterol, 1-2 neb treatments
exchanges potassium for sodium Sodium polystyrene sulfonate (Kayexalate)
___ in the situation of hyperkalemia, has an onset of 30-40 minutes and a duration of 6 hours Sodium polystyrene sulfonate (Kayexalate)
actually removes potassium Sodium polystyrene sulfonate (Kayexalate)
ultimate treatment for hyperkalemia hemodialysis
major renal cause of hypokalemia diuretics
major GI cause of hypokalemia vomiting, diarrhea, tube drainage, laxative abuse
EKG changes with hypokalemia subtle ST depression and U waves
Which is more dangerous in terms of cardiac arrhythmias: Hypokalemia or hyperkalemia hyperkalemia
one of the most common causes of hypercalcemia malignancy
int the setting of hypercalcemia in the primary care office the two most important things to do are get a PTH level, and do a targeted malignancy screening
causes for hyperphosphatemia ingestion, rhabdomyolysis, tumor-lysis syndrom, renal failure, hypoparathyroidism, acromegaly
treatment for hyperphosphatemia bisphosphonates (alendronate, pamidronate), hemodialysis
hypophosphatemia=total PO4 <__ mg/dL 2.3
Created by: bwyche