HESI LPN
PN Exit Exam 2023 Quizlet
1. Which of the following is the best method for confirming nasogastric tube placement?
- A. Auscultating over the stomach while injecting air
- B. Checking the pH of the aspirate
- C. Observing the patient’s response during feeding
- D. Measuring the external length of the tube
Correct answer: B
Rationale: Checking the pH of the aspirate is the most reliable method to confirm nasogastric tube placement as it provides direct evidence of the tube's location in the stomach. When the pH is acidic (pH < 5), it indicates that the tube is correctly placed in the stomach. Auscultating over the stomach while injecting air may not always be accurate, as the sound can be misleading due to various factors. Observing the patient’s response during feeding is not a definitive method for confirming tube placement, as it can be influenced by other factors. Measuring the external length of the tube does not ensure correct placement within the GI tract and can be affected by external factors like patient anatomy.
2. Which laboratory value is most important to monitor for a patient receiving heparin therapy?
- A. Platelet count
- B. Prothrombin time (PT)
- C. Partial thromboplastin time (PTT)
- D. International normalized ratio (INR)
Correct answer: C
Rationale: The correct answer is C, Partial thromboplastin time (PTT). PTT is monitored to assess the therapeutic effect of heparin therapy. It helps ensure that the heparin levels are within the desired range to prevent either clotting or excessive bleeding. Platelet count (A) is important but does not directly assess heparin's therapeutic effect. Prothrombin time (PT) (B) and International normalized ratio (INR) (D) are used to monitor patients on warfarin, not heparin therapy.
3. A post-operative client is recovering from a total knee replacement and is prescribed patient-controlled analgesia (PCA). What is the primary advantage of PCA for managing post-operative pain?
- A. It allows for consistent pain control without overmedication.
- B. It eliminates the need for oral pain medication.
- C. It reduces the risk of opioid addiction.
- D. It requires less monitoring by nursing staff.
Correct answer: A
Rationale: The primary advantage of PCA for managing post-operative pain is that it allows the client to control the administration of pain medication, leading to consistent pain control without overmedication. Choice B is incorrect as PCA does not eliminate the need for oral pain medication; it supplements it. Choice C is incorrect because while PCA can help reduce opioid consumption, it does not directly reduce the risk of opioid addiction. Choice D is incorrect as PCA actually requires close monitoring by nursing staff to ensure proper use and prevent complications.
4. What is an essential nursing action before administering a blood transfusion?
- A. Checking the patient’s blood pressure
- B. Verifying the blood type and patient identity with another nurse
- C. Flushing the IV line with saline
- D. Administering pre-transfusion medications
Correct answer: B
Rationale: Verifying the blood type and patient identity with another nurse is crucial before administering a blood transfusion. This step helps prevent transfusion reactions and ensures that the correct blood is given to the right patient. Checking the patient’s blood pressure, although important, is not directly related to verifying blood type and patient identity. Flushing the IV line with saline is a good practice but is not as critical as confirming the blood type and patient identity. Administering pre-transfusion medications would come after verifying the blood type and patient identity.
5. A client is recovering from a craniotomy and has a ventriculostomy in place. The nurse notices the drainage from the ventriculostomy is suddenly increasing. What should the nurse do first?
- A. Increase the head of the bed to 45 degrees.
- B. Clamp the ventriculostomy tube.
- C. Notify the healthcare provider immediately.
- D. Measure the client's head circumference.
Correct answer: C
Rationale: A sudden increase in drainage from a ventriculostomy could indicate a serious complication such as increased intracranial pressure or hemorrhage. The priority action in this situation is to notify the healthcare provider immediately to ensure prompt evaluation and intervention. Increasing the head of the bed may be beneficial in some situations but is not the first action to take. Clamping the ventriculostomy tube is inappropriate as it can lead to increased intracranial pressure. Measuring the client's head circumference is not the priority when there is a sudden increase in ventriculostomy drainage.
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