What should the nurse do first when a client is experiencing an allergic reaction?

Correct Answer: A

Rationale: The correct answer is A: Administer epinephrine. Epinephrine is the first-line treatment for an allergic reaction as it helps to reverse severe symptoms like swelling, difficulty breathing, and low blood pressure. Administering epinephrine promptly can prevent the allergic reaction from escalating into a life-threatening situation. Antihistamines (choice B) may be given after epinephrine for symptom relief but are not as immediate in action. Monitoring vital signs (choice C) is important, but administering epinephrine takes precedence in managing the allergic reaction. Providing a cold compress (choice D) may help with local swelling but does not address the systemic effects of the allergic reaction.

Correct Answer: A

Rationale: The correct answer is A: Administer oxygen. This is the most important intervention for a client with an obstructed airway because it helps to ensure that the patient is receiving adequate oxygen supply to prevent hypoxia. Oxygen therapy can help maintain oxygen saturation levels and support proper gas exchange in the lungs. Monitoring respiratory rate (B) is important but not as critical as ensuring oxygen supply. Administering morphine (C) is contraindicated as it can depress respiratory function further. Administering fluids (D) is not the priority in managing an obstructed airway.

Correct Answer: C

Rationale: Rationale: Choice C, apply ice, is the correct answer as the first intervention for a client at risk for dehydration. Applying ice helps to lower the body temperature, which can reduce sweating and fluid loss. This intervention is crucial in preventing further dehydration. Administering IV fluids (Choice A) may be necessary in severe dehydration cases, but it is not the first intervention. Administering oxygen (Choice B) is not directly related to dehydration. Elevating the leg (Choice D) is not effective in addressing dehydration. In summary, applying ice is the most appropriate initial intervention to prevent dehydration by reducing body temperature and fluid loss.

Correct Answer: A

Rationale: The correct answer is A: Monitor aPTT levels. This is crucial in intravenous heparin therapy to ensure the therapeutic range is maintained for anticoagulation without causing bleeding. Monitoring aPTT helps adjust heparin dosage to prevent clot formation or excessive bleeding. B: Monitoring for bleeding is important but not the most important action compared to monitoring aPTT levels for appropriate dosing. C: Checking platelet count is important for some anticoagulants like heparin, but aPTT monitoring is more directly related to heparin's anticoagulant effect. D: Administering a heparin antidote (protamine sulfate) is necessary in case of heparin overdose or in emergency situations but is not the primary action in routine care.

Correct Answer: A

Rationale: The correct answer is A: Assess vital signs. This is the first intervention because it provides immediate information on the client's condition and helps determine the severity of the pain. Monitoring vital signs can reveal signs of shock, dehydration, or other serious complications. Performing a CT scan (B) is not the first priority as it requires time and resources. Monitoring urine output (C) may be important but not as immediate as assessing vital signs. Monitoring for signs of shock (D) can be included in assessing vital signs but is not the primary intervention.