Complete the following using the list of options.

The nurse is admitting a new client to the hall.

While looking at the orders, she notes a medication order for Lasix 40 mg PO daily.
The nurse knows that this is an example of?

Choice A rationale

The "prn" abbreviation stands for "pro re nata," which is Latin for "as needed.”. This indicates that the medication should be administered based on the patient's symptoms or specific needs, rather than on a fixed schedule. The nurse assesses the patient and administers the medication only when the patient exhibits the conditions for which the medication is prescribed, adhering to the minimum 6-hour interval for safety and therapeutic efficacy. This allows for individualized pain management.

Choice B rationale

This statement is incorrect because a "prn" order does not imply around-the-clock administration. Around-the-clock dosing is typically for scheduled medications where a consistent drug level is desired to manage chronic conditions or prevent symptoms, regardless of the patient's immediate need. Administering a prn medication routinely could lead to unnecessary drug exposure or adverse effects.

Choice C rationale

While waiting 6 hours between doses is crucial to prevent drug accumulation and toxicity, stating "I must wait 6 hours before administering this medication to you" is an incomplete explanation for a PRN order. The primary determinant for administration is the patient's need, not simply the passage of time. The 6-hour interval is a safety parameter to ensure adequate drug clearance and prevent exceeding therapeutic thresholds.

Choice D rationale

Administering a medication "over 6 hours" refers to the duration of infusion, not the frequency of administration. This statement is typically relevant for intravenous infusions where the drug is diluted and infused slowly over a specific period. A prn order for oral medication generally means an immediate dose is given when needed, and the interval between doses is 6 hours, not the infusion time.

Choice A rationale

The posterior tibial pulse is located in the groove between the medial malleolus (inner ankle bone) and the Achilles tendon. Palpating this pulse requires a gentle but firm touch to identify the arterial pulsations. It is a common site for assessing peripheral circulation and is essential for evaluating lower extremity perfusion.

Choice B rationale

The inguinal area is the anatomical region of the groin, where the femoral pulse is located. The femoral pulse is palpable just below the inguinal ligament, midway between the anterior superior iliac spine and the pubic symphysis. This is a central pulse site, distinct from the posterior tibial pulse.

Choice C rationale

The top of the foot is where the dorsalis pedis pulse is located. This pulse is found lateral to the extensor hallucis longus tendon, over the metatarsal bones. It is another important site for assessing lower extremity perfusion but is different from the posterior tibial pulse.

Choice D rationale

Behind the knee is the location for palpating the popliteal pulse. This pulse is more difficult to assess due to its deep location within the popliteal fossa. It requires the patient's knee to be slightly flexed to relax the muscles and facilitate palpation.