A nurse is assisting with a presentation about caring for clients who are receiving diuretic therapy. The nurse should explain that which of the following medications can put clients at risk for hyperkalemia?

A. Insert the IV catheter:

Inserting an IV catheter is necessary to administer IV fluids and medications. However, it is not the most immediate need. The priority is to address the client's oxygenation status first to stabilize them before proceeding with other interventions.

B. Obtain a blood sample:

Obtaining a blood sample for cardiac enzyme levels is important to diagnose a myocardial infarction. Nevertheless, this step should be taken after ensuring the client is receiving adequate oxygen, as hypoxia needs to be addressed immediately.

C. Attach the leads for a 12-lead ECG:

Attaching the leads for a 12-lead ECG is crucial for diagnosing the client's cardiac condition. However, it should be done after initiating oxygen therapy, as improving the client's oxygenation status is more urgent and can help stabilize the client for further diagnostic procedures.

D. Initiate oxygen therapy:

Initiating oxygen therapy is the most critical first action. The client is experiencing severe chest pain, shortness of breath, and signs of cyanosis, indicating that their oxygen levels are insufficient. Providing oxygen at 4 L/min via nasal cannula will help alleviate hypoxia, improve the client's condition, and provide time for further diagnostic and therapeutic interventions.

A) Justice:
The principle of justice refers to the fair and equitable distribution of resources and the fair treatment of individuals. While it is an important ethical principle in healthcare, it does not specifically address the concept of avoiding harm to the client.

B) Fidelity:
Fidelity, also known as loyalty or faithfulness, relates to the obligation of healthcare professionals to be faithful to the commitments and promises they make to their clients. While fidelity is important for building trust and maintaining professional relationships, it does not directly address the concept of avoiding harm.

C) Non-maleficence:
Non-maleficence is the ethical principle that refers to the duty to do no harm. It emphasizes the obligation to protect clients from harm by ensuring that no unnecessary or unjustified harm is inflicted. In the context of healthcare, non-maleficence guides healthcare professionals to prioritize the safety and well-being of their clients, avoiding actions or interventions that may cause harm. This is the correct choice.

D) Beneficence:
Beneficence is the ethical principle that emphasizes the duty to do good and promote the well-being of others. While it is related to the concept of providing positive benefits to clients, it does not specifically focus on the avoidance of harm.