HESI LPN
Maternity HESI Test Bank
1. Which of the following pairs of bases is present in the rungs of the ladder-like structure of deoxyribonucleic acid (DNA)?
- A. Cytosine with guanine.
- B. Rhodamine with biotin.
- C. Diaminopurine with ribozyme.
- D. Serine with tyrosine.
Correct answer: A
Rationale: The correct answer is A: Cytosine with guanine. In the DNA double helix, cytosine always pairs with guanine forming a base pair, and adenine pairs with thymine. These complementary base pairs form the rungs of the ladder-like structure of DNA. Choice B, Rhodamine with biotin, is incorrect as they are not base pairs found in DNA. Choice D, Serine with tyrosine, is incorrect as they are amino acids, not DNA bases. Choice C, Diaminopurine with ribozyme, is also incorrect as ribozyme is an enzyme, not a base, and diaminopurine is not one of the standard bases found in DNA.
2. After inserting an NG tube for a client, which of the following assessment findings should the nurse expect to confirm correct tube placement?
- A. An x-ray shows the end of the tube above the pylorus.
- B. The tube is aspirated and contains clear gastric fluid.
- C. The tube is flushed with sterile water without resistance.
- D. The client does not cough or choke during tube insertion.
Correct answer: B
Rationale: Correct placement of an NG tube is confirmed by aspirating gastric fluid, which indicates that the tube is in the stomach. An x-ray can help visualize tube placement, but it alone does not confirm correct placement. Flushing the tube with sterile water without resistance indicates patency but not necessarily correct placement. The absence of coughing or choking does not confirm tube placement and is more related to the client's comfort during the procedure.
3. A client with a productive cough and fever has been diagnosed with bacterial pneumonia and is being admitted to the unit from the emergency room. Which intervention should the practical nurse ensure has been done prior to the administration of antibiotics?
- A. Sputum specimen
- B. Set of vital signs
- C. Electrocardiogram
- D. Glucometer check
Correct answer: A
Rationale: Before initiating antibiotic therapy in a client with bacterial pneumonia, obtaining a sputum specimen for culture and sensitivity is essential. This helps identify the specific bacteria causing the infection and guides the selection of the most effective antibiotic treatment.
4. When educating a group of school-age children on reducing the risk of Lyme disease, which instruction should the camp nurse include?
- A. Wash hands frequently
- B. Avoid drinking lake water
- C. Wear long sleeves and pants
- D. Do not share personal products
Correct answer: C
Rationale: The correct instruction to reduce the risk of Lyme disease is to wear long sleeves and pants. This helps prevent tick bites, which are the primary mode of transmission for Lyme disease. Wearing protective clothing reduces the skin's exposure to ticks, decreasing the chances of getting bitten. Washing hands frequently (Choice A) is important for general hygiene but not specifically for preventing Lyme disease. Avoiding drinking lake water (Choice B) is unrelated to the prevention of Lyme disease. Not sharing personal products (Choice D) is important for preventing the spread of infections but does not directly reduce the risk of Lyme disease.
5. When should discharge planning for a patient admitted to the neurological unit with a diagnosis of stroke begin?
- A. At the time of admission
- B. The day before the patient is to be discharged
- C. When outpatient therapy is no longer needed
- D. As soon as the patient's discharge destination is known
Correct answer: A
Rationale: Discharge planning for a patient admitted to the neurological unit with a stroke diagnosis should begin at the time of admission. Initiating discharge planning early allows for a comprehensive assessment of the patient's needs, enables better coordination of care, and ensures a smooth transition from the hospital to the next level of care. Option B is incorrect because waiting until the day before discharge does not provide enough time for adequate planning. Option C is incorrect because waiting until outpatient therapy is no longer needed delays the planning process. Option D is incorrect because waiting until the discharge destination is known may result in rushed planning and inadequate preparation for the patient's needs.