A nurse is reinforcing teaching with a client who has cancer and is undergoing external radiation therapy. Which of the following instructions should the nurse include in the teaching?

A) Time: The time of administration is an important factor to clarify. The prescription specifies erythromycin 500mg four times per day, but it does not specify the exact times the medication should be administered. The nurse should clarify the specific times to ensure the medication is given at proper intervals, especially considering the potential for drug interactions and the timing of meals, which may impact absorption.

B) Dosage: The dosage of 500mg is specified clearly in the prescription. There is no indication that the dosage is incorrect or needs clarification. Erythromycin 500mg four times per day is a standard dose for certain infections, so no issues are apparent with the dosage itself.

C) Route: The route of administration (oral, intravenous, etc.) is not specified in the question but is typically understood unless otherwise stated. However, in the context of erythromycin, the most common route is oral. Unless there’s uncertainty about the route, it does not need clarification.

D) Medication: The medication is clearly identified as erythromycin, which is a known antibiotic. There is no ambiguity in the medication prescribed, so there is no need for clarification in this regard. The focus should be on confirming the time of administration.

A) Wait 1 min between suctioning attempts: The nurse should wait 20 to 30 seconds between suctioning attempts, not a full minute. Waiting too long between attempts can cause the patient unnecessary distress. The goal is to allow for oxygenation and recovery of the airway in between suctioning attempts.

B) Apply intermittent suction for 30 seconds: Suctioning should be limited to 10 to 15 seconds at a time to prevent hypoxia and damage to the mucous membranes. Applying suction for 30 seconds could lead to complications such as hypoxia, mucosal trauma, and increased risk of infection.

C) Insert the catheter 10 cm (4 in.): This is the correct technique. For an adult client, the catheter should be inserted 10 cm (4 inches) into the airway. Inserting the catheter too far can cause trauma to the airway, while inserting it too shallow may not effectively clear secretions.

D) Apply suction while inserting the catheter: Suction should not be applied while inserting the catheter. Suctioning should only be applied while withdrawing the catheter, not while inserting it, to prevent mucosal trauma and to ensure effective clearance of secretions. Suctioning during insertion could damage the airway and increase discomfort for the client.