___________ is caused by water deprivation, hypertonic fluids, DI, heatstroke, renal failure, Cushing syndrome. S/S thirst, lethargy, dry mouth. TX: ______ fluids, restrict sodium.
a) Hypernatremia; Isotonic
b) Hyponatremia; Hypotonic
c) Hyperkalemia; Hypertonic
d) Hypokalemia; Isotonic