NUR 228 Electrolytes Exam Questions With Correct And Revised Answers
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Course
NUR 228
Institution
NUR 228
NUR 228 Electrolytes Exam Questions With
Correct And Revised Answers
What are electrolytes ? - answersubstances that are electrically charged when they are in a
solution
what are the 5 main body electrolytes ? - answerNa+ : sodium ion
Cl- : chloride ion
Mg2+ : magnesium ion
Ca2+ : calcium io...
EX: Na
is a neutral atom loses electrons what does it become? if it gain electrons what does it become ? -
answer✔✔loses : becomes a cation +
gains : becomes an anion -
sodium ? - answer✔✔governs osmolality and water
-aids in acid base balance
-activates muscles and nerve cells to keep normal range of acid base
hyponatremia ? - answer✔✔too much body fluid with H2O = not enough Na+
-osmolality of ECF is low
-rapid decrease = more symptoms than slow decline
causes of hyponatremia ? - answer✔✔- excess Na+ loss (renal +/- diuretics, GI, skin)
-excess H2O ( hypotonic IVF or IVF without sodium)
-polydipsia
- SIADH - kidneys telling to hold onto water which causes to dilute sodium
-excess water intake
symptoms of hyponatremia ? - answer✔✔malaise, anorexia, N/V, headache, confusion, lethargy,
seizures, coma
clinical manifestations of dilution hyponatremia ? - answer✔✔hypervolemia, increase BP,
weight gain, bounding rapid pulse, increase urine
treatment of hyponatremia ? - answer✔✔pay attention to how long this has been an issue - try
replacement first
sodium replacement : oral or IV, 0.9% NS solution, diuretic with hyervolemia, fluid restriction,
underlying problem
severe symptomatic hyponatremia : 1-2 mEq/hr until symptoms improve
osmotic demyelination syndrome (ODS) ? cause and symptoms ? - answer✔✔main cause if
correcting hyponatremia too fast
-destruction of the myelin sheath in the brainstem
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