HESI LPN
Fundamentals of Nursing HESI
1. Heparin 20,000 units in 500 ml D5W at 50 ml/hour has been infusing for 5.5 hours. How much heparin has the client received?
- A. 11,000 units.
- B. 13,000 units.
- C. 15,000 units.
- D. 17,000 units.
Correct answer: A
Rationale: To calculate the total amount of heparin received, multiply the infusion rate (50 ml/hour) by the total infusion time (5.5 hours). This results in 275 ml of the solution infused. Since there are 20,000 units of heparin in 500 ml, there are 800 units per ml. Therefore, 275 ml contains 220,000 units. However, the heparin is diluted in 500 ml, so the client has received half of this amount, which is 110,000 units. Therefore, the correct answer is 11,000 units. Choices B, C, and D are incorrect as they do not reflect the correct calculation based on the provided information.
2. A 25-year-old primigravida at 16 weeks gestation is admitted to the hospital with a diagnosis of hyperemesis gravidarum. Which nursing diagnosis should have the highest priority?
- A. Fluid volume deficit
- B. Altered nutrition: less than body requirements
- C. Anxiety related to new situational crisis
- D. Activity intolerance related to fatigue
Correct answer: A
Rationale: In a case of hyperemesis gravidarum, the priority nursing diagnosis should be addressing the Fluid volume deficit. This condition can lead to serious complications such as electrolyte imbalances and dehydration, which can endanger both the mother and the fetus if not managed promptly. Altered nutrition: less than body requirements is important but addressing the fluid volume deficit takes precedence as it poses an immediate threat. Anxiety related to new situational crisis and Activity intolerance related to fatigue are valid concerns, but they are secondary to the critical issue of fluid volume deficit in this scenario.
3. When teaching the guardian of a 12-year-old male client about manifestations of puberty, which of the following physical changes typically occurs first?
- A. Appearance of downy hair on the upper lip
- B. Hair growth in the axillae
- C. Enlargement of the testes and scrotum
- D. Deepening of the voice
Correct answer: C
Rationale: During puberty in males, the first physical change that typically occurs is the enlargement of the testes and scrotum. This change is due to increased production of testosterone, which stimulates growth and development of the genital organs. The appearance of downy hair on the upper lip (Choice A) and hair growth in the axillae (Choice B) usually follow the enlargement of the testes and scrotum. Deepening of the voice (Choice D) is a later stage change that occurs during puberty as the larynx (voice box) grows and the vocal cords lengthen and thicken.
4. A 3-year-old child has had multiple tooth extractions while under general anesthesia. The client returns from the post-anesthesia care unit crying but awake. Which approach is likely to be successful?
- A. Examine the mouth first
- B. Reassure the child
- C. Examine the mouth last
- D. Offer a pacifier
Correct answer: C
Rationale: In this scenario, it is crucial to prioritize the comfort of the child. By examining the mouth last, discomfort is minimized, and the child is given the opportunity to settle down. Choosing to examine the mouth first may escalate the distress of the child further. While reassuring the child is important, in this case, addressing the physical discomfort before providing emotional reassurance is more effective. Offering a pacifier may provide some comfort, but addressing the immediate physical discomfort by examining the mouth last is the most appropriate action to help the child settle down after the procedure.
5. A client who has an indwelling catheter reports a need to urinate. Which of the following actions should the nurse take?
- A. Check the catheter to see whether it is patent.
- B. Reassure the client that it is not possible for them to urinate.
- C. Re-catheterize the bladder with a larger-gauge catheter.
- D. Collect a urine specimen for analysis.
Correct answer: A
Rationale: When a client with an indwelling catheter reports a need to urinate, the nurse's initial action should be to check the catheter for patency. This is crucial to ensure that the catheter is not blocked, twisted, or kinked, which could lead to urinary retention. Reassuring the client without assessing the catheter could delay necessary interventions. Re-catheterizing the bladder with a larger-gauge catheter should not be the first step unless catheter patency is confirmed as an issue. Collecting a urine specimen for analysis is important but not the immediate priority when the client reports a need to urinate.
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