HESI LPN
Practice HESI Fundamentals Exam
1. A client with a history of hypertension is prescribed a diuretic. Which of the following laboratory values should the nurse monitor to evaluate the effectiveness of the medication?
- A. Monitor serum calcium levels.
- B. Monitor serum potassium levels.
- C. Monitor serum sodium levels.
- D. Monitor serum magnesium levels.
Correct answer: B
Rationale: The correct answer is to monitor serum potassium levels. When a client is prescribed a diuretic, monitoring serum potassium levels is essential to evaluate the medication's effectiveness and to detect potential electrolyte imbalances. Diuretics can cause potassium loss, leading to hypokalemia, which can have serious consequences such as cardiac arrhythmias. Monitoring serum calcium levels (Choice A) is not typically required when assessing the effectiveness of diuretics. Similarly, monitoring serum sodium levels (Choice C) is important for other conditions but is not the primary concern when evaluating diuretic therapy. Monitoring serum magnesium levels (Choice D) is also important, but potassium levels are more critical in assessing diuretic effectiveness and preventing complications.
2. A client who is post-op following a partial colectomy has an NG tube set on low continuous suction. The client complains of a sore throat and asks when the NG tube will be removed. Which response by the nurse is appropriate at this time?
- A. When the GI tract is working again, in about three to five days, the tube can be removed.
- B. The tube will be removed once your nausea improves.
- C. You can expect the tube to be removed in about a week.
- D. The tube will be removed once the drainage stops.
Correct answer: A
Rationale: The correct response is A: 'When the GI tract is working again, in about three to five days, the tube can be removed.' After a partial colectomy, the GI tract needs time to recover and start functioning properly. The NG tube is typically removed when peristalsis returns, indicating GI function restoration, which usually occurs within 3-5 days post-op. Choice B is incorrect because the removal of the NG tube is not solely based on nausea improvement. Choice C is incorrect as it provides a longer duration for tube removal than is usually necessary. Choice D is incorrect as the cessation of drainage alone does not dictate NG tube removal; the return of GI function is the primary indicator.
3. While measuring a client’s vital signs, the nurse notices an irregularity in the heart rate. Which nursing action is appropriate?
- A. Count the apical pulse rate for 1 full minute, and describe the rhythm in the chart
- B. Measure the blood pressure
- C. Perform an ECG
- D. Recheck the heart rate after 5 minutes
Correct answer: A
Rationale: The appropriate nursing action when an irregularity in the heart rate is observed is to count the apical pulse rate for a full minute and describe the rhythm in the chart. This approach helps in obtaining an accurate assessment of the irregularities present. Measuring the blood pressure (Choice B) is important but not the immediate priority when an irregular heart rate is noted. Performing an ECG (Choice C) may be necessary but is a more advanced intervention that should follow the initial assessment. Rechecking the heart rate after 5 minutes (Choice D) may delay potential interventions for addressing the irregularity, making it less appropriate than the immediate assessment and documentation of the pulse rhythm.
4. What immediate action should a healthcare worker take after being stuck in the hand by an exposed needle?
- A. Look up the policy on needle sticks
- B. Contact employee health services
- C. Immediately wash the hands thoroughly with soap and water
- D. Notify the supervisor and risk management
Correct answer: C
Rationale: The correct immediate action for a healthcare worker who has been stuck by an exposed needle is to wash the hands thoroughly with soap and water to reduce the risk of infection. This helps to remove any potential pathogens introduced by the needle stick. Looking up the policy on needle sticks (Choice A) is important but not the immediate action required. Contacting employee health services (Choice B) and notifying the supervisor and risk management (Choice D) are crucial steps to take, but they should follow the initial step of washing the hands to mitigate the risk of infection.
5. A healthcare professional is preparing to administer enoxaparin subcutaneously to a client. Which of the following actions should the healthcare professional take?
- A. Administer the medication with the needle at a 45-degree angle.
- B. Administer the medication with the needle at a 90-degree angle.
- C. Inject the medication into the muscle.
- D. Pinch the skin before injecting.
Correct answer: B
Rationale: Enoxaparin is a medication that is administered subcutaneously, which means it should be injected into the fatty tissue layer beneath the skin. Administering enoxaparin at a 90-degree angle ensures proper absorption and reduces the risk of injecting the medication into muscle tissue, which could affect its effectiveness. Injecting the medication at a 45-degree angle may lead to improper absorption as it may not reach the subcutaneous tissue adequately. Injecting the medication into the muscle instead of subcutaneously can alter the absorption rate and therapeutic effects. Pinching the skin before injecting is not necessary for administering enoxaparin subcutaneously and may cause unnecessary discomfort to the client.
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