How do you workup hyponatremia (Na < 135),"First measure serum osmolarity-If >295 = Hypertonic hyponatremia (hyperglycemia or osmotic diuresis)-If 280-295 = Pseudohyponatremia (high protein or TG)-If <280, assess ECF-If low = hypovolemia (↓TBW, ↓↓Na). Measure urine Na. If <10 it is due to extrarenal loses (diarrhea, vomit, sweat, 3rd spacing). If > 20, it is due to renal loses (diuretic, low aldosterone, ATN)-If normal = euvolemia hyponatremia (↑TBW, -Na). Due to SIADH or psychogenic polydypsia-If high = Hypervolemic hyponatremia. Due to CHF, RF

Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.How do you workup hyponatremia[…]

Read more

How do you workup hypernatremia (Na > 145)Treatment?,”First measure ECFLow = Hypovolemic hypernatremia (↓↓H2O, ↓Na). Due to renal loss (diuretic) or extrarenal loss (diarrhea). Treat with isotonic salineNormal = Isovolemic hypernatremia (↓H2o, -Na). Due to DI. Treat with D5W or 0.45 salineHigh = Hypervolemic hypernatremia (↑H2O, ↑↑Na). Due to cushings, primary aldosteronism

Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.How do you workup hypernatremia[…]

Read more