An adolescent client with non-union of a comminuted fracture of the tibia is admitted with osteomyelitis. The healthcare provider collects bone aspirate specimens for culture and sensitivity and applies a cast to the adolescent's lower leg. Which action should the nurse implement next?

A. anaphylaxis

The correct answer is A. Anaphylaxis is a severe, life-threatening allergic reaction that can occur in response to medication administration. The client's symptoms of dizziness, headache, burning feeling on extremities, and redness on face and extremities, along with the sudden onset of symptoms after starting vancomycin infusion, are indicative of a possible anaphylactic reaction.

B. arrhythmias

The correct answer is B. Arrhythmias refer to abnormal heart rhythms, which can be

triggered by various factors including medication reactions. Given the client's history of symptomatic bradycardia and the sudden onset of symptoms after starting vancomycin infusion, arrhythmias such as bradycardia or other rhythm disturbances are a concern.

C. Cardiac arrest

The correct answer is C. Cardiac arrest is the cessation of normal heart function, which can be precipitated by severe arrhythmias or anaphylaxis. The client's symptoms, along with the drop in blood pressure, indicate a potential risk of progressing to cardiac arrest if not promptly treated.

D. Necrosis

Necrosis, or tissue death, is not typically associated with the symptoms described in the scenario. While vancomycin infusion can potentially cause tissue irritation or damage at the
injection site, the symptoms described suggest a systemic reaction rather than localized tissue necrosis.

E. Renal failure

Renal failure is not directly indicated by the symptoms described in the scenario. While vancomycin can be nephrotoxic in some cases, the symptoms of dizziness, headache, and redness are more suggestive of an allergic or cardiovascular reaction.

F. Peripheral edema

Peripheral edema, or swelling in the extremities, is not indicated by the symptoms described in the scenario. The client's symptoms, such as dizziness, headache, and redness, are more
indicative of a systemic reaction rather than localized swelling.

A. Demonstrating how to palpate the popliteal pulse is not a suitable alternative for measuring blood pressure when the client cannot be measured in the arms or legs. Palpating peripheral pulses does not provide accurate blood pressure measurements.

B. Advising the UAP to document the last blood pressure obtained is insufficient because it does not address the need for current blood pressure monitoring. Documentation of past
measurements does not provide real-time information about the client's hemodynamic status.

C. Estimating the blood pressure by assessing the pulse volume of the client's radial pulses is a reasonable alternative when traditional blood pressure measurement sites are inaccessible. Although not as accurate as traditional methods, assessing the strength of peripheral pulses can provide valuable information about perfusion and blood pressure status.

D. Documenting why the blood pressure cannot be accurately measured is important for record- keeping but does not address the need for ongoing blood pressure monitoring or provide an alternative method for assessment.