Final answer:
The prescription signa '10 mg MS IM q 4h prn pain' instructs administration of 10 milligrams of Morphine Sulfate by intramuscular injection every 4 hours as needed for pain.
Step-by-step explanation:
The signa 10 mg MS IM q 4h prn pain is a medical prescription instruction. Here is what each part means:
- 10 mg - the dose of the medication, which is 10 milligrams.
- MS - the abbreviation for Morphine Sulfate, the medication prescribed.
- IM - the route of administration, which stands for intramuscular injection.
- q 4h - the frequency of the dosage, which means every 4 hours.
- prn pain - the condition for administration, indicating the medication should be taken 'as needed' for pain.
Therefore, the correct interpretation is that the patient should be given 10 milligrams of Morphine Sulfate by intramuscular injection every 4 hours as needed for pain.