What is the nurse's priority intervention for a client who has taken excessive antacid and is experiencing difficulty breathing?

• A. Prepare for cardiac catherization.
• B. Obtain a serum creatinine kinase (CK) level.
• C. Initiate thrombolytic therapy.
• D. Obtain a 12-lead ECG.

Answer: (D)

When a client has taken an excessive amount of antacid and is experiencing difficulty breathing, the priority intervention is to obtain a 12-lead ECG. This is critical because excessive antacid use can lead to metabolic alkalosis, electrolyte imbalances (such as hypokalemia), and potential cardiac issues, all of which can manifest as changes in heart rhythm and function.

By obtaining a 12-lead ECG, the nurse can assess the client's heart's electrical activity and identify any abnormalities that may be affecting the client’s respiratory status. Difficulty breathing may be a sign of compromised cardiovascular function or even a cardiac event, and early identification of any such issues is paramount in providing timely and effective care.

Additionally, while other interventions like preparing for cardiac catheterization, obtaining a serum creatinine kinase level, or initiating thrombolytic therapy may be relevant depending on the specific clinical scenario, they are not the immediate priority in this case. The ECG provides critical real-time information that can guide further interventions and management. Thus, obtaining a 12-lead ECG is essential in assessing the client's cardiac status and determining the next steps in care.