NCLEX Question for hypotonic

NCLEX Review Question

Which of the following solutions is hypo tonic?

a.0.45% NaCl.
b.Lactated Ringer's solution.
c.0.9% NaCl.
d.5% NaCl.

Correct Answer: A
0.45% NaCl.
Rationale: Half-strength saline is hypo tonic

Lactated Ringer's solution.
Rationale: Lactated Ringer's is isotonic.

0.9% NaCl.
Rationale: Normal saline (0.9% NaCl) is isotonic.

5% NaCl.
Rationale: A solution that is 5% NaCl is hyper tonic.

Posted in: MSN NCLEX