HESI RN
HESI Fundamentals Practice Exam
1. How many drops per minute should a client weighing 182 pounds receive if a nurse mixes 50 mg of Nipride in 250 ml of D5W and plans to administer the solution at a rate of 5 mcg/kg/min? The drip factor is 60 gtt/ml.
- A. 31 gtt/min.
- B. 62 gtt/min.
- C. 93 gtt/min.
- D. 124 gtt/min.
Correct answer: D
Rationale: To determine the drops per minute for the client, first convert the client's weight from pounds to kilograms: 182/2.2 = 82.73 kg. Calculate the dosage by multiplying 5 mcg by the client's weight in kg: 5 mcg/kg/min × 82.73 kg = 413.65 mcg/min. Find the concentration of the solution in mcg/ml by dividing 250 ml by 50,000 mcg (50 mg): 250 ml/50,000 mcg = 200 mcg/ml. As the client needs 413.65 mcg/min and the solution is 200 mcg/ml, the client should receive 2.07 ml per minute. Finally, using the drip factor of 60 gtt/ml, multiply the ml per minute by the drip factor: 60 gtt/ml × 2.07 ml/min = 124.28 gtt/min, which rounds to 124 gtt/min. Therefore, the client should receive 124 drops per minute. Choice D is the correct answer. Choices A, B, and C are incorrect because they do not reflect the accurate calculation based on the client's weight, dosage, concentration of the solution, and drip factor.
2. When a health care provider diagnoses metastatic cancer and recommends a gastrostomy for an older female client in stable condition, the son tells the nurse that his mother must not be told the reason for the surgery because she 'can't handle' the cancer diagnosis. Which legal principle is the court most likely to uphold regarding this client's right to informed consent?
- A. The family cannot provide the consent required in this situation because the older adult is in a condition to make such decisions.
- B. Because the client is mentally incompetent, the son does not have the right to waive informed consent for her.
- C. The court will not allow the health care provider to make the decision to withhold informed consent under therapeutic privilege.
- D. If informed consent is withheld from a client, health care providers could be found guilty of negligence.
Correct answer: D
Rationale: In the scenario described, it is crucial for health care providers to obtain informed consent from the client before proceeding with any medical intervention. If informed consent is withheld and the treatment is carried out without the client's agreement, health care providers could be found guilty of negligence, specifically assault and battery. This legal principle emphasizes the importance of respecting a client's autonomy and right to make decisions about their own healthcare. Despite the son's wishes to withhold information from his mother, the client must be informed of the proposed treatment and given the opportunity to consent or refuse based on complete information provided by the healthcare team.
3. During the assessment, a client receiving a continuous infusion of heparin for deep vein thrombosis (DVT) is found to have a nosebleed. Which finding requires immediate action?
- A. The client's activated partial thromboplastin time (aPTT) is 70 seconds.
- B. The client has developed a nosebleed.
- C. The client's blood pressure is 150/90 mm Hg.
- D. The client reports feeling lightheaded.
Correct answer: B
Rationale: A nosebleed (B) in a client receiving heparin is a sign of heparin toxicity and requires immediate action. It indicates that the client is at risk of excessive bleeding. While a prolonged aPTT of 70 seconds (A) is worth monitoring, active bleeding takes precedence. Elevated blood pressure (C) and lightheadedness (D) are potential side effects of heparin but are not as urgently concerning as active bleeding.
4. The health care provider has changed a client's prescription from the PO to the IV route of administration. The nurse should anticipate which change in the pharmacokinetic properties of the medication?
- A. The client will experience increased tolerance to the drug's effects and may need a higher dose.
- B. The onset of action of the drug will occur more rapidly, resulting in a more rapid effect.
- C. The medication will be more highly protein-bound, increasing the duration of action.
- D. The therapeutic index will be increased, placing the client at greater risk for toxicity.
Correct answer: B
Rationale: When a medication is administered via the IV route, the absorptive process is bypassed, leading to a more rapid onset of action. This results in a faster effect of the drug. Choice A is incorrect because changing the route of administration does not necessarily lead to increased tolerance or the need for a higher dose. Choice C is incorrect as changing the route of administration does not directly affect the protein binding of a medication. Choice D is incorrect because increasing the therapeutic index would actually reduce the risk of toxicity, not increase it.
5. The healthcare professional retrieves hydromorphone 4mg/mL from the Pyxis MedStation, an automated dispensing system, for a client who is receiving hydromorphone 3 mg IM 6 hours PRN for severe pain. How many mL should the healthcare professional administer to the client? (Enter the numerical value only. If rounding is required, round to the nearest tenth)
- A. 0.8 mL
- B. 0.75 mL
- C. 0.7 mL
- D. 0.9 mL
Correct answer: A
Rationale: To calculate the mL to administer, divide the ordered dose (3 mg) by the concentration (4 mg/mL). 3 mg ÷ 4 mg/mL = 0.75 mL. Rounding to the nearest tenth, the correct dose to administer is 0.8 mL.
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