HESI RN
HESI RN CAT Exam Quizlet
1. The healthcare provider prescribes amoxicillin (Amoxil) 1.5 grams PO daily, in equally divided doses to be administered every 8 hours. The medication is available in a bottle labeled Amoxicillin (Amoxil) suspension 200 mg/5 ml. How many ml should the nurse administer every 8 hours?
- A. 10 ml
- B. 12.5 ml
- C. 15 ml
- D. 17.5 ml
Correct answer: B
Rationale: To calculate the correct dosage, first, determine the total daily dose: 1.5 grams = 1500 mg. Since the medication is 200 mg/5 ml, for 1500 mg, the nurse needs to administer 1500/200 = 7.5 times the 5 ml dose. Therefore, 7.5 x 5 ml = 37.5 ml total daily dose. To administer this every 8 hours, divide 37.5 ml by 3 (8 hours intervals in a day) to get 12.5 ml to be administered every 8 hours. Choice A, C, and D are incorrect as they do not reflect the correct calculation of the dose based on the prescription and the available concentration.
2. A client with cirrhosis is taking lactulose (Cephulac). Which finding indicates that the lactulose is having the desired effect?
- A. Two to three soft bowel movements per day
- B. Increased serum ammonia levels
- C. Decreased white blood cell count
- D. Soft, formed stool twice a day
Correct answer: A
Rationale: The correct answer is A: 'Two to three soft bowel movements per day.' Lactulose is prescribed to produce soft, regular bowel movements to reduce ammonia levels in clients with cirrhosis. This helps in preventing hepatic encephalopathy. Option B is incorrect because increased serum ammonia levels would indicate that lactulose is not effectively reducing ammonia levels. Option C is incorrect because lactulose does not directly affect white blood cell counts. Option D is incorrect because soft, formed stools twice a day may not be frequent enough to effectively reduce ammonia levels in clients with cirrhosis.
3. When administering an intramuscular injection containing 3 ml of a painful medication, which intervention should the nurse implement?
- A. Instill the medication quickly
- B. Insert the needle slowly
- C. Select a large, deep muscle mass
- D. Use a short, small gauge needle
Correct answer: C
Rationale: The correct answer is C: Select a large, deep muscle mass. When administering an intramuscular injection with a painful medication volume of 3 ml, selecting a large and deep muscle mass is crucial. This intervention reduces discomfort for the patient and ensures proper absorption of the medication. Choice A is incorrect because instilling the medication quickly can increase discomfort. Choice B is incorrect as inserting the needle slowly may prolong the discomfort. Choice D is incorrect as using a short, small gauge needle may not be suitable for delivering 3 ml of medication effectively into the muscle.
4. The nurse is preparing to administer an IM injection to a 6-month-old child. Which injection site is best for the nurse to use?
- A. Vastus lateralis
- B. Deltoid
- C. Ventrogluteal
- D. Dorsogluteal
Correct answer: A
Rationale: The vastus lateralis is the preferred site for IM injections in infants due to muscle development. In infants under 1 year old, the vastus lateralis muscle in the thigh is often used for IM injections due to its size and development. The deltoid muscle is typically used for adults, and the ventrogluteal and dorsogluteal sites are more commonly used for older children and adults. Therefore, the best choice for administering an IM injection to a 6-month-old child is the vastus lateralis.
5. When obtaining an admission history for a client who is at 9 weeks gestation, the client states, 'I had a miscarriage 2 years ago.' Which information is most important for the nurse to obtain?
- A. How long was your previous pregnancy?
- B. How long did it take for you to become pregnant after your miscarriage?
- C. Was your miscarriage during the first trimester?
- D. Do you have any children now?
Correct answer: A
Rationale: The correct answer is A. Understanding the duration of the previous pregnancy helps assess the client's obstetric history. Choice B focuses on the time it took to conceive after the miscarriage, which is less relevant at this point. Choice C asks about the timing of the miscarriage rather than the duration of the previous pregnancy. Choice D inquires about the current status of having children, which is not directly related to the client's obstetric history.
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