An Elderly Patient Who Is Taking a Thiazide Diuretic Has

An elderly patient who is taking a thiazide diuretic has been ill with nausea and vomiting and is brought to the emergency department for evaluation. An assessment reveals oliguria, hypotension, and tachycardia and serum sodium is 118 mEq/L. What is the treatment?

A) A single infusion of hypertonic saline
B) Addition of spironolactone
C) Emergency volume repletion with 3% NaCl.
D) Fluid and dietary sodium restriction