A nurse is instructing a young adult client about healthful sleep habits. Which of the following statements should the nurse identify as an indication that the client needs further teaching?

A. Light-headedness when standing up:
Elevated potassium levels (hyperkalemia) can lead to muscle weakness or paralysis, cardiac dysrhythmias, and even cardiac arrest. Light-headedness when standing up is more commonly associated with orthostatic hypotension or volume depletion rather than electrolyte imbalances like hyperkalemia.

B. Weak quadriceps muscles:
Weakness in the quadriceps muscles is not typically associated with the electrolyte imbalances presented in the scenario. Hyperkalemia can cause muscle weakness, but it is not specific to the quadriceps.

C. Decreased deep tendon reflexes:
Decreased deep tendon reflexes are not typically associated with the electrolyte imbalances presented in the scenario. Hyperkalemia can lead to hyperreflexia or absent reflexes, but it is not specific to decreased deep tendon reflexes.

D. Tingling of extremities:
This is the correct answer. Hypocalcemia, indicated by the low calcium level in the scenario, can manifest with symptoms such as tingling or numbness of the extremities, muscle cramps, and tetany. Calcium plays a crucial role in nerve transmission, and low levels can lead to sensory disturbances like tingling in the extremities.

A. Apply a warm compress to the IV site: While warm compresses can sometimes help alleviate discomfort associated with certain IV complications, such as phlebitis or infiltration, they should not be applied until the cause of the pain is identified. In this case, removing the IV saline lock is the priority action to assess the site properly.

B. Remove the IV saline lock: Pain above the catheter site during flushing may indicate infiltration or phlebitis, both of which require intervention. Removing the IV saline lock allows the nurse to assess the site for signs of complications such as swelling, redness, or coolness to the touch. Once removed, the nurse can then determine the appropriate course of action, such as reinserting the IV at a different site, applying warm compresses, or notifying the healthcare provider if further evaluation or treatment is necessary.

C. Inject the solution more slowly while flushing the IV saline lock: Injecting the solution more slowly may reduce discomfort during flushing, but it does not address the underlying cause of the pain. If there is infiltration or another issue with the IV site, continuing to flush slowly could exacerbate the problem.

D. Apply firm pressure to the plunger of the syringe during the IV flush to improve patency: Applying firm pressure to the plunger of the syringe during flushing is not appropriate when the client reports pain above the catheter site. This action could potentially force fluid into surrounding tissues, worsening infiltration or causing additional discomfort. It is essential to address the pain and assess the IV site before attempting to flush the saline lock again.