Which of the following intravenous solutions is most similar to the electrolyte content of the blood?
1. 0.22% sodium chloride (1/4NS)
2. Dextrose 5% in 0.45% sodium chloride (D5 1/2NS)
3. Dextrose 5% in water (D5W)
4. Lactated Ringer's (LR)
ANS: 4
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