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 breastfeeding infant, screened for congenital hypothyroidism, is found to have low levels of thyroxine (T4) and high levels of thyroid-stimulating hormone (TSH). What is the best explanation for this finding?
- A. The thyroxine level is low because the TSH level is high.
- B. High thyroxine levels do not normally occur in breastfeeding infants.
- C. The thyroid gland does not produce normal levels of thyroxine for several weeks after birth.
- D. The TSH is high because of the low production of T4 by the thyroid.
Correct answer: D
Rationale: High TSH and low T4 levels indicate that the thyroid gland is not producing enough hormones, which is a sign of congenital hypothyroidism. In this case, the high TSH is a compensatory response by the body to stimulate the thyroid to produce more T4. Choice A is incorrect because TSH does not directly affect T4 levels; rather, it is the other way around where low T4 levels lead to high TSH levels. Choice B is incorrect because high thyroxine levels are not expected in congenital hypothyroidism. Choice C is incorrect as the thyroid gland should be producing normal levels of thyroxine shortly after birth, making this explanation unlikely in the context of congenital hypothyroidism.
3. The nurse instructs a laboring client to use accelerated-blow breathing. The client begins to complain of tingling fingers and dizziness. What action should the nurse take?
- A. Administer oxygen by face mask.
- B. Notify the healthcare provider of the client's symptoms.
- C. Have the client breathe into her cupped hands.
- D. Check the client's blood pressure and fetal heart rate.
Correct answer: C
Rationale: Tingling fingers and dizziness are symptoms of hyperventilation, which can occur with accelerated-blow breathing. Instructing the client to breathe into her cupped hands can help rebreathe exhaled carbon dioxide, which can alleviate the symptoms by restoring the proper balance of oxygen and carbon dioxide in the blood. This intervention can be effective in managing the client's hyperventilation without the need for additional medical interventions at this point.
4. When preparing a class on newborn care for expectant parents, what content should be taught concerning the newborn infant born at term gestation?
- A. Milia are white marks caused by sebaceous glands and typically resolve within 2 to 4 weeks.
- B. Meconium is the first stool and is typically dark green or black in color.
- C. Vernix caseosa is a white, cheesy substance mainly found in skin folds, providing a protective layer.
- D. Pseudostrabismus in newborns usually self-resolves without the need for intervention.
Correct answer: C
Rationale: Vernix caseosa is a white, cheesy substance that acts as a protective barrier on the skin of newborns, particularly present in skin folds. It helps to prevent dehydration and protect the delicate skin of the newborn from the amniotic fluid in utero. Educating expectant parents about the presence and function of vernix caseosa can help them understand the importance of its preservation during the immediate postnatal period. Choices A, B, and D are incorrect as they do not directly relate to the protective function of vernix caseosa in newborns. Milia are small, white bumps on the skin due to blocked oil glands, meconium is the first stool of a newborn and is typically dark green or black in color, and pseudostrabismus refers to false appearance of misalignment of the eyes, which usually resolves on its own without intervention.
5. The healthcare provider is preparing to suture a 10-year-old with a lacerated forehead. Both parents and the 12-year-old sibling are at the child’s bedside. Which instruction best supports the family?
- A. While waiting for the healthcare provider, only one family member may stay with the child.
- B. All family members should leave while the healthcare provider sutures the child’s forehead.
- C. It is best if the sibling goes to the waiting room until the suturing is completed.
- D. Please decide among yourselves who will stay when the healthcare provider begins suturing.
Correct answer: D
Rationale: Choice D is the best instruction as it involves the family in the decision-making process, allowing them to choose who will stay with the child during the suturing procedure. This approach supports the family's comfort and participation in the child's care, promoting a sense of control and family-centered care. Choices A, B, and C do not promote family involvement and may lead to feelings of exclusion or lack of control among the family members.
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