HESI LPN
Medical Surgical HESI
1. A middle-aged man who has a 35-year smoking history presents to the emergency department confused and short of breath. Before starting oxygen, these baseline arterial blood gases (ABGs) are obtained: pH=7.25, pCO2=50 mmHg, HCO3=30 mEq/L. These findings indicate to the nurse that the client is experiencing which acid-base imbalance?
- A. Metabolic acidosis.
- B. Respiratory acidosis.
- C. Metabolic alkalosis.
- D. Respiratory alkalosis.
Correct answer: B
Rationale: The ABG results show a low pH (acidosis) and increased pCO2, indicating respiratory acidosis. In respiratory acidosis, the lungs cannot remove enough CO2, leading to its accumulation in the blood. This often occurs in conditions like COPD and is consistent with the patient's smoking history. Metabolic acidosis (choice A) is characterized by low pH and low HCO3 levels. Metabolic alkalosis (choice C) is marked by high pH and high HCO3 levels. Respiratory alkalosis (choice D) presents with high pH and low pCO2.
2. A client with chronic kidney disease is advised to follow a low-phosphorus diet. Which food should the client avoid?
- A. Milk
- B. Apples
- C. Carrots
- D. Rice
Correct answer: A
Rationale: Correct Answer: Milk. Milk is high in phosphorus and should be avoided in a low-phosphorus diet for clients with chronic kidney disease. Choice B (Apples), C (Carrots), and D (Rice) are not significant sources of phosphorus and can be included in moderation in a low-phosphorus diet. Apples and carrots are generally considered healthy choices for most individuals, while rice is a staple food that is low in phosphorus and can be part of a renal diet.
3. Since children with attention deficit hyperactivity disorder (ADHD) take medication for long periods of time, side effects must be considered. How often should children be assessed for side effects of the drug therapy?
- A. Every 2 months
- B. Every 4 months
- C. Every 6 months
- D. Every 8 months
Correct answer: C
Rationale: Children with ADHD who are on long-term medication therapy should be assessed for side effects every 6 months. This timeframe allows healthcare providers to monitor the effects of the medication and make any necessary adjustments. Checking every 2 months (Choice A) may be too frequent and not practical for routine monitoring, while checking every 4 or 8 months (Choices B and D) may lead to missing potential side effects or delays in addressing them.
4. A child has developed a diaper rash, and the parents are using zinc oxide to treat it. What does the nurse suggest to aid in the removal of the zinc oxide?
- A. Mild soap and water
- B. A cotton ball
- C. Mineral oil
- D. Alcohol swabs
Correct answer: C
Rationale: To completely remove ointment, especially zinc oxide, mineral oil should be used. Mineral oil helps in gently breaking down and lifting the ointment without causing irritation. Mild soap and water (Choice A) may not be effective in completely removing zinc oxide. A cotton ball (Choice B) may not provide the necessary lubrication to aid in the removal process. Alcohol swabs (Choice D) can be harsh on the skin and are not recommended for this purpose.
5. A client is receiving a continuous infusion of normal saline at 125 ml/hour post abdominal surgery. The client is drowsy and complaining of constant abdominal pain and a headache. Urine output is 800 ml over the past 24h with a central venous pressure of 15 mmHg. The nurse notes respiratory crackle and bounding central pulses. Vital signs: temperature 101.2°F, Heart rate 96 beats/min, Respirations 24 breaths/min, and Blood pressure 160/90 mmHg. Which interventions should the nurse implement first?
- A. Review the last administration of IV pain medication.
- B. Administer a PRN dose of acetaminophen.
- C. Decrease IV fluids to keep the vein open (KVO) rate.
- D. Calculate total intake and output.
Correct answer: C
Rationale: The correct answer is to decrease IV fluids to the keep vein open (KVO) rate. The client is showing signs of fluid volume excess, such as drowsiness, headache, elevated CVP, crackles, bounding pulses, and increased blood pressure. Decreasing the IV fluids will help prevent further fluid overload. Reviewing the last administration of IV pain medication (Choice A) may be necessary but addressing the fluid balance issue is the priority. Administering a PRN dose of acetaminophen (Choice B) may help with the headache but does not address the underlying fluid overload. Calculating total intake and output (Choice D) is important but does not directly address the immediate issue of fluid overload and its associated symptoms.
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