ATI RN
ATI Fluid Electrolyte and Acid-Base Regulation
1. The ICU nurse is caring for a patient who experienced trauma in a workplace accident. The patient is complaining of having trouble breathing with abdominal pain. An ABG reveals the following results: pH 7.28, PaCO2 50 mm Hg, HCO3 23 mEq/L. The nurse should recognize the likelihood of what acidbase disorder?
- A. Respiratory acidosis
- B. Metabolic alkalosis
- C. Respiratory alkalosis
- D. Mixed acidbase disorder
Correct answer: Mixed acidbase disorder
Rationale:
2. A nurse is teaching a client about self-administration of enoxaparin. Which of the following instructions should the nurse include?
- A. Administer the injection into the muscle of your thigh.
- B. Pinch the skin before inserting the needle.
- C. Rub the injection site after administering the medication.
- D. Administer the injection into the fat tissue of your abdomen.
Correct answer: D
Rationale: The correct instruction for self-administration of enoxaparin is to inject it into the fat tissue of the abdomen for proper absorption. Choice A is incorrect as enoxaparin should not be injected into the muscle. Choice B is unnecessary for enoxaparin administration. Choice C is incorrect as rubbing the injection site after administering the medication is not recommended.
3. The nurse is caring for a child receiving chemotherapy with the following orders: Zantac 70 mg IV in normal saline 30 mL to infuse over 30 minutes. The nurse should set the infusion pump to deliver how many mL/hour?
- A. 60 mL/hour
- B. 45 mL/hour
- C. 30 mL/hour
- D. 15 mL/hour
Correct answer: A
Rationale: The correct answer is A: 60 mL/hour. The total volume to be infused is 30 mL over 30 minutes. To calculate the infusion rate in mL/hour, divide the total volume by the total time in hours. In this case, 30 mL / 0.5 hours = 60 mL/hour. Choice B, 45 mL/hour, is incorrect as it does not correspond to the calculated infusion rate. Choices C and D, 30 mL/hour and 15 mL/hour respectively, are also incorrect based on the calculation.
4. A client is postoperative following a hip arthroplasty. Which of the following interventions should the nurse include in the plan of care?
- A. Encourage the client to lie flat in bed.
- B. Apply heat to the incision site.
- C. Use an abduction pillow between the client's legs.
- D. Place a trochanter roll under the client's knees.
Correct answer: C
Rationale: Using an abduction pillow between the client's legs is essential in maintaining proper alignment and preventing dislocation of the hip joint following a hip arthroplasty. Encouraging the client to lie flat in bed (Choice A) is not recommended as early mobilization is crucial for preventing complications. Applying heat to the incision site (Choice B) is not typically done immediately postoperatively. Placing a trochanter roll under the client's knees (Choice D) is not as beneficial as using an abduction pillow to maintain proper positioning.
5. A nurse is caring for a client who is experiencing acute alcohol withdrawal. Which of the following medications should the nurse plan to administer?
- A. Lorazepam
- B. Atenolol
- C. Naltrexone
- D. Methadone
Correct answer: A
Rationale: Lorazepam is the correct choice for managing acute alcohol withdrawal symptoms due to its effectiveness in controlling agitation and tremors associated with this condition. Atenolol (Choice B) is a beta-blocker mainly used for hypertension and angina, not for alcohol withdrawal symptoms. Naltrexone (Choice C) is used for alcohol dependence treatment by reducing cravings and the rewarding effects of alcohol, but it is not typically used in acute withdrawal situations. Methadone (Choice D) is an opioid agonist mainly used for opioid detoxification and maintenance therapy, not for alcohol withdrawal.
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