HESI RN
Biology Practice Test
1. During which stage of mitosis do the chromosomes gather on either side of the separating cell?
- A. Metaphase
- B. Telophase
- C. Anaphase
- D. Prophase
Correct answer: B
Rationale: The correct answer is B, Telophase. During telophase, the chromosomes gather at opposite poles of the cell as the nuclear envelopes start to form around them, indicating the end of cell division. Choices A, C, and D are incorrect because during metaphase, the chromosomes align in the middle of the cell; in anaphase, the chromosomes separate and move towards opposite poles; and in prophase, the chromosomes condense and the nuclear envelope breaks down, respectively.
2. Which hormone regulates the production of milk after childbirth?
- A. Prolactin
- B. Oxytocin
- C. Estrogen
- D. Progesterone
Correct answer: A
Rationale: The correct answer is Prolactin. Prolactin is the hormone responsible for regulating the production of milk after childbirth. It stimulates the mammary glands in the breasts to produce milk. Oxytocin, on the other hand, is responsible for the ejection of milk from the breasts. Estrogen and progesterone play roles in the menstrual cycle and pregnancy but are not directly involved in milk production. Therefore, choices B, C, and D are incorrect.
3. A client with a diagnosis of hyperthyroidism is being discharged. Which instruction should the nurse include in the discharge teaching?
- A. Avoid foods high in iodine.
- B. Take your medication with meals.
- C. Monitor your weight daily.
- D. Decrease your daily fluid intake.
Correct answer: A
Rationale: The correct answer is A: 'Avoid foods high in iodine.' Clients with hyperthyroidism should avoid foods high in iodine to prevent exacerbation of their condition. Iodine is an essential component in thyroid hormone production, and excessive iodine intake can worsen hyperthyroidism symptoms. Taking medication with meals (B) can interfere with the absorption of certain thyroid medications. Monitoring weight daily (C) is more relevant for conditions that may lead to weight changes like hypothyroidism. Decreasing fluid intake (D) is not a standard recommendation for hyperthyroidism unless specifically indicated by the healthcare provider.
4. Which nursing intervention is most important to assist in detecting hypopituitarism and hyperpituitarism in children?
- A. Carefully recording the height and weight of children to detect inappropriate growth.
- B. Performing head circumference measurements on infants under one year of age.
- C. Assessing for behavioral problems at home and school by interviewing the parents.
- D. Noting tracked weight gain without a gain in height on a growth chart.
Correct answer: A
Rationale: Recording the height and weight of children is crucial in detecting growth abnormalities like hypopituitarism and hyperpituitarism. Inappropriate growth patterns, such as disproportionate weight gain or stunted height, can be indicative of these conditions. Regular monitoring of height and weight is a fundamental nursing intervention that can aid in the early identification and management of pituitary-related disorders in children.
5. A client in the oliguric phase of acute renal failure (ARF) has a 24-hour urine output of 400 ml. How much oral intake should the nurse allow this client to have during the next 24 hours?
- A. Encourage oral fluids as tolerated
- B. Decrease oral intake to 200 ml
- C. Allow the client to have exactly 400 ml oral intake
- D. Limit oral intake to 900 to 1,000 ml
Correct answer: D
Rationale: In the oliguric phase of acute renal failure (ARF), the goal is to prevent fluid overload. Since the client has a low urine output of 400 ml in 24 hours, limiting oral intake to 900 to 1,000 ml is appropriate. Encouraging unrestricted oral fluids (Choice A) can exacerbate fluid overload. Decreasing oral intake to 200 ml (Choice B) would be too restrictive and may lead to dehydration. Allowing the client to have exactly 400 ml oral intake (Choice C) would not account for other sources of fluid intake and output, potentially resulting in fluid imbalance.