A client is prescribed a saline enema. Because this solution is hypertonic, the nurse would expect the enema to cause which action?
1. Exerts osmotic pressure and draws fluid from the interstitial space into the colon
2. Exerts a lower osmotic pressure than the surrounding interstitial fluid
3. Exerts the same osmotic pressure as the interstitial fluid surrounding the colon
4. Stimulates peristalsis by increasing the volume in the colon and irritating the colon
Correct Answer: 1
Rationale 1: A hypertonic solution exerts osmotic pressure and draws fluid from the interstitial space into the colon.
Rationale 2: A hypotonic solution exerts a lower osmotic pressure than the surrounding interstitial fluid.
Rationale 3: An isotonic solution is the safest enema solution to use. It exerts the same osmotic pressure as the interstitial fluid surrounding the colon.
Rationale 4: Soapsuds stimulate peristalsis by increasing the volume in the colon and irritating the colon.
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