Correct Answer: D

Rationale: In this scenario, the client is showing signs of a potential transfusion reaction, indicated by an increased respiratory rate. The nurse's initial action should be to slow down the infusion rate of the packed red blood cells to prevent further complications. Administering diphenhydramine or stopping the infusion should not be the first actions taken, as the priority is to ensure the client's safety and prevent adverse reactions. Continuing to monitor vital signs without taking immediate action to address the increased respiratory rate would delay appropriate intervention.

Correct Answer: D

Rationale: The correct answer is the pulse rate of 115 beats/min. A rapid pulse rate is a sign of compensatory mechanisms in response to dehydration, indicating that the body is trying to deliver oxygen more efficiently. Oxygen therapy may be needed to support the increased oxygen demand. Tenting of skin on the back of the hand is a classic sign of dehydration due to decreased skin turgor. Increased urine osmolarity and weight loss are also indicators of dehydration, but they do not directly suggest a need for oxygen therapy.

Correct Answer: C

Rationale: Fever and chills are systemic symptoms that may indicate a more severe infection or a complication of a urinary tract infection (UTI). While burning on urination and cloudy, dark urine are common symptoms of UTI, fever and chills suggest a more serious condition requiring immediate attention. Hematuria, which is blood in the urine, is also a concerning symptom but is more indicative of inflammation or infection rather than a complication.

Correct Answer: D

Rationale: The correct answer is to teach the client lifestyle modifications to decrease blood pressure. A blood pressure reading of 134/88 mm Hg falls within the prehypertension range. The initial approach to managing prehypertension involves lifestyle modifications such as dietary changes, exercise, and stress reduction techniques. Calling the healthcare provider without attempting non-pharmacological interventions first is premature. Reassessing blood pressure at the next follow-up appointment may delay necessary interventions. Administering additional antihypertensive medication is not indicated at this stage as lifestyle modifications are the first line of treatment for prehypertension.

Correct Answer: D

Rationale: The correct action for the nurse to take when a client finds antiembolism stockings uncomfortably tight is to teach the client the purpose of wearing the stockings. This educates the client on the importance of the stockings in preventing blood clots and encourages compliance. Removing the stockings or pulling them down may compromise their effectiveness. Measuring the client's calf size is not necessary in this situation as the discomfort is due to tightness, not incorrect sizing.