HESI RN
Evolve HESI Medical Surgical Practice Exam
1. A healthcare professional has a prescription to collect a 24-hour urine specimen from a client. Which of the following measures should the healthcare professional take during this procedure?
- A. Keeping the specimen chilled
- B. Saving the first urine specimen collected at the start time
- C. Discarding the last voided specimen at the end of the collection time
- D. Asking the client to void, discarding the specimen, and noting the start time
Correct answer: D
Rationale: The correct answer is asking the client to void, discarding the specimen, and noting the start time. During a 24-hour urine collection, the first voided urine is discarded to ensure the test starts with an empty bladder. The specimen should be kept chilled, not at room temperature, to prevent bacterial growth. The last voided specimen is not discarded because it contributes to the total volume collected, so choice C is incorrect. Discarding the specimen and noting the start time is essential for accurate results in a timed quantitative determination like a 24-hour urine collection.
2. The client has been receiving peritoneal dialysis. The nurse should assess the client for which of the following complications that is most likely to occur?
- A. Electrolyte imbalance
- B. Peritonitis
- C. Infection
- D. Hyperglycemia
Correct answer: B
Rationale: Peritonitis is the most likely complication to occur in clients receiving peritoneal dialysis due to the risk of infection. Peritonitis is a serious inflammation of the peritoneum lining the abdominal cavity, commonly caused by infection. While electrolyte imbalance and hyperglycemia are possible complications in some cases, peritonitis poses a more immediate and severe threat to the client's health. Infection is a general term that can encompass peritonitis but is not as specific as directly identifying peritonitis as the primary concern in this scenario.
3. The patient has a heart rate of 98 beats per minute and a blood pressure of 82/58 mm Hg, is lethargic, complaining of muscle weakness, and has had gastroenteritis for several days. Based on these findings, which sodium value would the nurse expect?
- A. 126 mEq/L
- B. 140 mEq/L
- C. 145 mEq/L
- D. 158 mEq/L
Correct answer: A
Rationale: The patient's presentation of tachycardia, hypotension, lethargy, muscle weakness, and gastroenteritis suggests hyponatremia. Hyponatremia is characterized by a serum sodium level below the normal range of 135-145 mEq/L. A serum sodium level of 126 mEq/L falls significantly below this range, indicating hyponatremia. Choice B (140 mEq/L) and Choice C (145 mEq/L) are within the normal range for serum sodium levels and would not explain the patient's symptoms. Choice D (158 mEq/L) is above the normal range and would indicate hypernatremia, which is not consistent with the patient's presentation.
4. What is the most common cause of urinary tract infections (UTIs)?
- A. Escherichia coli infection
- B. Staphylococcus aureus infection
- C. Pseudomonas aeruginosa infection
- D. Klebsiella pneumoniae infection
Correct answer: A
Rationale: Escherichia coli is the most common cause of urinary tract infections (UTIs). It is responsible for the majority of UTIs, especially in women. E. coli is a normal inhabitant of the bowel and can enter the urinary tract through the urethra, leading to infection. Staphylococcus aureus, Pseudomonas aeruginosa, and Klebsiella pneumoniae are less common causes of UTIs compared to E. coli. Staphylococcus aureus typically causes skin and soft tissue infections, Pseudomonas aeruginosa is more commonly associated with healthcare-associated infections, and Klebsiella pneumoniae is known for causing pneumonia and other respiratory infections.
5. A client with cardiovascular disease is scheduled to receive a daily dose of furosemide (Lasix). Which potassium level would cause the nurse to contact the physician before administering the dose?
- A. 3.0 mEq/L
- B. 3.8 mEq/L
- C. 4.2 mEq/L
- D. 5.1 mEq/L
Correct answer: A
Rationale: The normal serum potassium level in adults ranges from 3.5 to 5.1 mEq/L. A potassium level of 3.0 mEq/L is low, indicating hypokalemia and necessitating physician notification before administering furosemide, a loop diuretic that can further lower potassium levels. Potassium levels of 3.8 and 4.2 mEq/L are within the normal range, while a level of 5.1 mEq/L is high (hyperkalemia), but the critical value in this case is the low potassium level that requires immediate attention to prevent potential complications.
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