A client receiving IV fluids suddenly complains of chest pain and difficulty breathing. The nurse quickly assesses the client's vital signs and observes decreased blood pressure and weak pulse. The nurse should suspect which complication of IV therapy?

A) This choice is incorrect because infiltration is not typically associated with symptoms of chest pain, difficulty breathing, decreased blood pressure, and weak pulse.

B) This choice is incorrect because phlebitis does not cause sudden onset chest pain, difficulty breathing, decreased blood pressure, and weak pulse.

C) This choice is incorrect because fluid overload is not associated with symptoms like chest pain and decreased blood pressure. It may cause elevated blood pressure due to increased fluid volume.

D) This choice is correct. The client's symptoms of sudden chest pain, difficulty breathing, decreased blood pressure, and weak pulse are indicative of anaphylaxis, a severe allergic reaction. Anaphylaxis can occur in response to an allergen in the IV fluid or medication and can be life-threatening if not treated promptly.

A) This choice is correct. Changing the IV tubing every 24 hours is a recommended intervention to reduce the risk of catheter-related bloodstream infections (CRBSIs) by minimizing the accumulation of microorganisms in the tubing.

B) This choice is incorrect because administering antibiotics prophylactically is not a standard practice for preventing CRBSIs, and it can contribute to antibiotic resistance.

C) This choice is incorrect because keeping the IV bag above the level of the heart is a technique used to regulate IV flow rate, but it is not specifically related to preventing CRBSIs.

D) This choice is incorrect because using a large-gauge catheter is not a preventive measure for CRBSIs. The appropriate catheter size should be based on the client's clinical condition and the prescribed therapy.