HESI RN
Maternity HESI Quizlet
1. The healthcare provider prescribes Amoxicillin 500mg PO every 8hrs for a child who weighs 22 pounds. The available suspension is labeled Amoxicillin Suspension 250mg/5ml. The recommended maximum dose is 50mg/kg/24hr. How many mL should the nurse administer in a single dose based on the child’s weight?
- A. 10mL
- B. 15mL
- C. 7.5mL
- D. 5mL
Correct answer: A
Rationale: To calculate the dose for the child weighing 22 pounds, first convert the weight to kg: 22 lbs ÷ 2.2 = 10 kg. The maximum dose based on weight would be 10 kg × 50 mg/kg/24hr = 500 mg/24hr. Since the medication is prescribed every 8 hours, the dose for each administration would be 500 mg ÷ 3 doses = 166.67 mg. As the available suspension is 250mg/5ml, the nurse should administer 166.67 mg ÷ 250 mg/mL = 0.67 mL per dose. However, since it's not practical to administer a fraction of a milliliter, the nurse should round up to the nearest appropriate dose, which is 10mL.
2. A loading dose of terbutaline (Brethine) 250 mcg IV is prescribed for a client in preterm labor. Brethine 20 mg is added to 1,000 mL of D5W. How many milliliters of the solution should the nurse administer?
- A. 45
- B. 15 mL
- C. 4
- D. 13
Correct answer: D
Rationale: To calculate the amount of terbutaline to administer, first convert the dose to the same unit. 250 mcg = 0.25 mg. Next, set up a proportion: 20 mg is to 1000 mL as 0.25 mg is to X mL. Cross multiply and solve for X: 20 × X = 0.25 × 1000. X = (0.25 × 1000) / 20 = 12.5 mL. Therefore, the nurse should administer 13 mL of the solution. Choice A is incorrect as it does not reflect the correct calculation. Choice B is incorrect as it does not consider the accurate conversion and calculation. Choice C is incorrect as it is not the result of the correct proportion calculation.
3. The client is admitted in active labor with a cervix that is 3 cm dilated, 50% effaced, and the presenting part at 0 station. An hour later, the client expresses the need to go to the bathroom. Which action should the nurse implement first?
- A. Palpate the client’s bladder.
- B. Check the pH of the vaginal fluid.
- C. Review the fetal heart rate pattern.
- D. Determine cervical dilation.
Correct answer: D
Rationale: The nurse should prioritize determining cervical dilation as it helps in assessing the progress of labor and ensures it is safe for the client to move. Changes in cervical dilation may indicate the advancement of labor, warranting appropriate interventions or restrictions on movement to prevent complications. While checking the client's bladder may be important to ensure it's not distended, determining cervical dilation takes precedence in this scenario. Checking the pH of the vaginal fluid is not relevant in this situation, and reviewing the fetal heart rate pattern, although important, is not the first action to take when the client expresses the need to go to the bathroom.
4. In which chromosome pattern is Duchenne disease inherited?
- A. Autosomal dominant
- B. Autosomal recessive
- C. X-linked recessive
- D. Mitochondrial
Correct answer: C
Rationale: Duchenne disease is caused by a mutation in the DMD gene located on the X chromosome, leading to an X-linked recessive inheritance pattern. Males are typically affected by this disorder as they have only one X chromosome, while females are carriers with one normal and one affected X chromosome.
5. A multiparous client with active herpes lesions is admitted to the unit with spontaneous rupture of membranes. Which action should the nurse take?
- A. Obtain blood culture.
- B. Administer penicillin.
- C. Cover lesion with a dressing.
- D. Prepare her for cesarean section.
Correct answer: D
Rationale: Active herpes lesions at the time of delivery increase the risk of neonatal transmission. The most appropriate action in this scenario is to prepare the client for a cesarean section. A cesarean section is often recommended to reduce the risk of neonatal transmission of herpes simplex virus during delivery, especially when active lesions are present. This intervention helps minimize direct contact between the newborn and the infected genital tract secretions, thereby decreasing the risk of transmission.
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