A nurse is caring for a client who has a prescription for NPH insulin 10 units and regular insulin 15 units subcutaneously. After injecting 10 units of air into the NPH insulin vial, which of the following actions should the nurse take next?
Verify the dosage with another nurse.
Inject 15 units of air into the regular insulin vial.
Withdraw 10 units of NPH insulin.
Place the cap over the needle.
The Correct Answer is B
This step is part of the process when mixing NPH and regular insulin in a single syringe. After injecting air into the NPH insulin vial, you should inject an equal amount of air (in this case, 15 units) into the regular insulin vial to maintain pressure balance. This allows for easy withdrawal of the prescribed doses of each insulin type in the same syringe without causing a vacuum in the vials.
After injecting air into the NPH insulin vial (step 1), the nurse should proceed to inject air into the regular insulin vial (step 2) before withdrawing the insulin doses in the subsequent steps.
Verifying the dosage with another nurse is not necessary in this step, as it is done prior to drawing up the insulin. However, it is good practice to have another nurse double-check the dosage before administration.
Injecting air into the regular insulin vial is not required at this stage. It is only necessary when withdrawing the regular insulin dose.
Placing the cap over the needle should be done after withdrawing the desired dose of insulin and before administering it to the client for safety and to prevent needlestick injuries.
The correct sequence when mixing NPH and regular insulin in a single syringe is as follows:
- Inject air into the NPH insulin vial (in this case, 10 units of air).
- Inject air into the regular insulin vial (in this case, 15 units of air).
- Withdraw the prescribed dose of NPH insulin (10 units) from the NPH vial.
- Withdraw the prescribed dose of regular insulin (15 units) from the regular insulin vial.
So, after injecting air into the NPH insulin vial (step 1), the nurse should proceed to inject air into the regular insulin vial (step 2) before withdrawing the insulin doses in the subsequent steps.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","B","C","D"]
Explanation
Provide the client with written information about advance directives: It is important for the nurse to educate the client about advance directives, their purpose, and how they can make informed decisions about their healthcare.
Instruct the client that an advance directive is a legal document and must be honored by care providers: The nurse should explain to the client that an advance directive is a legally binding document that guides healthcare decisions, and it must be respected and followed by healthcare providers.
Communicate advance directives status via the medical record and shift report: The nurse should ensure that the client's advance directives status is accurately documented in the medical record and communicated to other members of the healthcare team during shift handoffs. This helps ensure that the client's wishes are known and respected by all involved in their care.
Initiate a power of attorney for health care document: The nurse can assist the client in initiating a power of attorney for healthcare document if the client wishes to appoint someone as their healthcare proxy or agent. This document designates someone to make medical decisions on behalf of the client if they become unable to do so.
The other options listed are not appropriate or accurate in relation to the responsibilities of the nurse regarding advance directives:
Document that the provider discussed-do-not-resuscitate status with the client: While discussing do-not-resuscitate (DNR) status may be part of the advance care planning process, it is not directly related to advance directives as a whole.
Inform the client that an advance directive discontinues further care: This statement is incorrect and misleading. An advance directive does not automatically discontinue care but rather guides the provision of care according to the client's wishes.
Correct Answer is D
Explanation
Using the overbed trapeze helps the client strengthen their upper body and improve mobility by allowing them to independently move and reposition themselves in bed. This promotes independence in activities of daily living and reduces reliance on nursing assistance.

Cautioning the client to avoid a prone position while in bed is important for preventing pressure ulcers and maintaining proper positioning, but it does not specifically promote independence and mobility.
Keeping a loose, absorbent dressing over the surgical site is important for wound care and infection prevention, but it does not directly promote mobility or independence. Maintaining abduction of the client's residual limb with a pillow is important to prevent contractures, but it does not directly promote mobility or independence.
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