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common causes of dehydration
hemorrage, diarrhea, vomiting, prolonged NPO, fistulas, ileostomy, profuse diaphoresis, burns, diuretics, gi suction, hyperventilation, impaired thirst, fever
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common cause of fluid volume excess
excessive fluid replacement, late renal failure, heart failure, syndrome of inappropriate antidiuretic hormone, long term corticosteroid therapy
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interventions for fluid deficit
IV fluids, promote oral fluids, offer snacks, stop diurectic if applicable, pad bony prominences
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s/s of fluid overload
increased pulse rate, bounding pulse, increased BP, distended neck veins, weight gain, increased respiratory rate, pitting edema, skin pale and cool to touch, increased motility
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common causes of hyponatremia
excessive diaphoresis, diuretics, renal disease, NPO
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common causes of hypernatremia
hyperaldosteronism, renal failure, corticosteroids, Cushings, dehydration,
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common causes of hypokalemia
diuretics, diarrhea, vomiting, prolonged ng suction, Renal disease, NPO
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s/s of hypokalemia
respiratory changes, skeletal muscle weakness, weak hand graspa and deep tendon reflexes, thready and weak pulse, dysrhythmia, orthostatic hypotension, anxiety, decreased gastric motility, abdominal distention, lethargy, confusion
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interventions for hypokalemia
potassium IV- 5 to 10 mEq/hr, give oral potassium with food, d/c loop diuretic-- potassium sparing diuretic, eat foods high in potassium
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common causes of hyperkalemia
salt substitutes, blood transfusion, renal failure, potassium sparing diuretics, over-ingestion of potassium rich foods
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common causes of hypocalcemia (level below 9.0mg/dl)
kidney disease, lactose intolerance, diarrhea, Crohn's or celiac disease, orthopaedic surgery, thyroidectomy
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interventions for hypocalcemia
seizure precautions, high calcium diet, oral & IV calcium replacement,
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s/s of hypocalcemia
muscle spasm, paresthesia, tetany, Trousseau's sign- positive palmar flecion with BP cuff inflated, and Chvostek's sign, HR and ECG changes, abdominal cramping, decreased bone density--increased risk for fracture
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common causes of hypercalcemia (above 10.5mg/dl)
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