A 22-year-old dialysis patient presents to the ER with chest pain and palpitations. Laboratory tests reveal a Potassium (K+) level of 7.0 mEq/L. Which electrolyte imbalance is the patient suffering from?

D. The nurse should promptly notify the healthcare provider to discuss the allergy history and request an alternative antibiotic that is not structurally related to penicillin or cephalosporins. Examples of alternative antibiotics may include antibiotics from different classes such as macrolides or fluoroquinolones, depending on the indication and sensitivity profile.

A. Diphenhydramine (Benadryl) is an antihistamine that can help manage allergic reactions. However, it should not be used as a standalone precautionary measure for a client with a history of anaphylaxis to penicillin. Anaphylaxis is a severe allergic reaction that can lead to life-threatening symptoms such as difficulty breathing, swelling, and low blood pressure.

B. Before taking any further steps, the nurse should clarify and confirm the nature and severity of the client's allergic reaction to penicillin. Anaphylaxis is a serious allergic reaction characterized by rapid onset and potentially life-threatening symptoms. Clarifying the history ensures accurate decision- making regarding the administration of cephalexin.

C. This is not recommended without further clarification and assessment. Given the history of anaphylaxis to penicillin, there is a significant risk of cross-reactivity with cephalosporins like cephalexin. Cephalosporins have a structural similarity to penicillin and can provoke allergic reactions in individuals with penicillin allergy, including anaphylaxis.

D. Blurred vision is a known adverse effect of metoclopramide. It can occur due to its effects on the central nervous system, including potential effects on visual processing. Patients should be informed about this potential side effect, and vision should be monitored periodically.

A. Metoclopramide can cause drowsiness or sedation, especially at higher doses or in susceptible individuals. Monitoring for sedation is important to ensure patient safety and adjust dosing as needed.

B. Urinary retention: Although less common, metoclopramide has been associated with urinary retention. Patients should be monitored for signs and symptoms of urinary difficulty or retention, especially if they have pre-existing urinary issues.

C. Hypertension: Metoclopramide can occasionally lead to an increase in blood pressure, particularly in patients who are predisposed to hypertension or have other cardiovascular risk factors. Blood pressure monitoring is important during treatment.