HESI RN
HESI Medical Surgical Practice Quiz
1. A patient’s serum osmolality is 305 mOsm/kg. Which term describes this patient’s body fluid osmolality?
- A. Iso-osmolar
- B. Hypo-osmolar
- C. Hyperosmolar
- D. Isotonic
Correct answer: C
Rationale: The correct term to describe a patient with a serum osmolality of 305 mOsm/kg is 'hyperosmolar.' Normal osmolality ranges from 280 to 300 mOsm/kg. A patient with an osmolality above this range is considered hyperosmolar. Choice A ('Iso-osmolar') implies an equal osmolality, which is not the case in this scenario. Choice B ('Hypo-osmolar') suggests a lower osmolality, which is incorrect based on the provided serum osmolality value. Choice D ('Isotonic') refers to a solution having the same osmolality as another solution, not describing the specific scenario of this patient being above the normal range.
2. The patient will begin taking penicillin G procaine (Wycillin). The nurse notes that the solution is milky in color. What action will the nurse take?
- A. Call the pharmacist and report the milky color.
- B. Add normal saline to dilute the medication.
- C. Call the physician and report the milky appearance.
- D. Administer the medication as ordered by the physician.
Correct answer: D
Rationale: The correct answer is to administer the medication as ordered by the physician. Penicillin G procaine (Wycillin) is known to have a milky appearance, which is normal. The milky color should not raise concerns for the nurse as it is an expected characteristic of this medication. Calling the pharmacist (choice A) or the physician (choice C) unnecessarily would delay the administration of the medication. Adding normal saline to dilute the medication (choice B) is not appropriate and could alter the medication's effectiveness. Therefore, the nurse should proceed with administering the medication as prescribed without any further action based on its milky appearance.
3. A client has just had a central line catheter placed that is specific for hemodialysis. What is the most appropriate action by the nurse?
- A. Use the catheter for the next laboratory blood draw.
- B. Monitor the central venous pressure through this line.
- C. Access the line for the next intravenous medication.
- D. Place a heparin or heparin/saline dwell after hemodialysis.
Correct answer: D
Rationale: The most appropriate action for the nurse after a central line catheter placement for hemodialysis is to place a heparin or heparin/saline dwell after hemodialysis treatment. This helps prevent clot formation in the line and maintain patency for future use. Using the catheter for blood draws is not recommended as it may increase the risk of infection. Monitoring central venous pressure is not indicated with this type of catheter. Accessing the line for medications is also not recommended to prevent complications and ensure the line is solely used for hemodialysis purposes.
4. A client presents with a urine specific gravity of 1.018. What action should the nurse take?
- A. Evaluate the client’s intake and output for the past 24 hours.
- B. Document the finding in the chart and continue to monitor.
- C. Obtain a specimen for a urine culture and sensitivity.
- D. Encourage the client to drink more fluids, especially water.
Correct answer: B
Rationale: A urine specific gravity of 1.018 falls within the normal range, indicating adequate hydration. Therefore, the appropriate action is to document this finding in the client's chart and continue monitoring. There is no need to evaluate intake and output, as the specific gravity is normal. Obtaining a urine culture and sensitivity or encouraging increased fluid intake is unnecessary in this situation.
5. What is the priority intervention for a patient with a suspected myocardial infarction (MI)?
- A. Administering oxygen.
- B. Administering nitroglycerin.
- C. Administering aspirin.
- D. Administering morphine.
Correct answer: A
Rationale: Administering oxygen is the priority intervention for a patient with a suspected myocardial infarction to improve oxygenation. Oxygen helps ensure an adequate oxygen supply to the heart muscle, reducing the workload on the heart. Nitroglycerin and aspirin are important interventions in the treatment of MI; however, oxygen administration takes precedence to ensure adequate oxygenation. Morphine may be considered for pain relief, but it is not the initial priority in the treatment of a suspected MI.
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