HESI RN
HESI Medical Surgical Specialty Exam
1. The nurse is caring for a patient who has recurrent urinary tract infections. The patient’s current infection is not responding to an antibiotic that has been used successfully several times in the past. The nurse understands that this is most likely due to
- A. acquired bacterial resistance.
- B. cross-resistance.
- C. inherent bacterial resistance.
- D. transferred resistance.
Correct answer: A
Rationale: The correct answer is A: acquired bacterial resistance. Acquired resistance happens when an organism has been exposed to the antibacterial drug, making it less effective over time. Cross-resistance (B) occurs when resistance to one drug leads to resistance to another. Inherent resistance (C) happens without prior exposure to the drug, meaning the bacteria are naturally resistant. Transferred resistance (D) involves the transfer of resistant genes from one organism to another, contributing to resistance development.
2. A client has just been scheduled for endoscopic retrograde cholangiopancreatography (ERCP). What should the nurse tell the client about the procedure? Select all that apply.
- A. That informed consent is required
- B. That the test takes about 1 hour to complete
- C. That premedication for sedation may be necessary
- D. That food and fluids will be withheld before the procedure
Correct answer: B
Rationale: The correct answer is that the ERCP procedure takes about 1 hour to complete. Informed consent is required before the procedure. Premedication for sedation may be necessary as sedation is commonly used during ERCP to keep the client comfortable. Food and fluids are withheld before the procedure to prevent aspiration and ensure a clear view during the procedure. Position changes may be necessary to facilitate the passage of the tube.
3. In a patient with type 1 diabetes, which of the following is a sign of diabetic ketoacidosis (DKA)?
- A. Polyuria
- B. Bradycardia
- C. Dry skin
- D. Tachycardia
Correct answer: D
Rationale: Tachycardia is a sign of diabetic ketoacidosis (DKA) in a patient with type 1 diabetes. In DKA, the body responds to hyperglycemia and dehydration by increasing heart rate. Polyuria (increased urination) is a symptom of diabetes but not specific to DKA. Bradycardia (slow heart rate) and dry skin are not typical signs of DKA; instead, tachycardia and other signs of volume depletion are more common.
4. A client with chronic renal failure is receiving calcium acetate (PhosLo). The nurse should monitor the client for which of the following side effects?
- A. Hypercalcemia.
- B. Hypocalcemia.
- C. Hyperglycemia.
- D. Hypoglycemia.
Correct answer: A
Rationale: Corrected Question: A client with chronic renal failure is receiving calcium acetate (PhosLo). The nurse should monitor the client for which of the following side effects? Rationale: The correct answer is A, Hypercalcemia. Calcium acetate (PhosLo) is a medication used to lower phosphate levels in patients with chronic renal failure. It works by binding with dietary phosphate and preventing its absorption. However, this can lead to an excess of calcium in the blood, causing hypercalcemia. Therefore, the nurse should closely monitor the client for signs and symptoms of elevated calcium levels, such as nausea, vomiting, confusion, and muscle weakness. Choices B, C, and D are incorrect as calcium acetate does not typically cause hypocalcemia, hyperglycemia, or hypoglycemia.
5. 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.
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