Nursing Elites

1. 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.

2. When a client delivers a viable infant but experiences excessive uncontrolled vaginal bleeding after the IV Pitocin infusion, what information is most important for the nurse to provide when notifying the healthcare provider?

• A. Maternal blood pressure
• B. Estimated blood loss
• C. Length of labor
• D. Amount of IV fluids administered

Correct answer: A

Rationale: In a situation where a client is experiencing excessive uncontrolled vaginal bleeding post-delivery, the most crucial information for the nurse to provide the healthcare provider is the maternal blood pressure. Maternal blood pressure can help assess the severity of the bleeding and guide immediate interventions to stabilize the client's condition. Estimated blood loss, length of labor, and amount of IV fluids administered are important pieces of information but in this scenario, maternal blood pressure takes precedence as it directly indicates the client's current hemodynamic status.

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. When can a woman who thinks she may be pregnant use a home pregnancy test to diagnose pregnancy?

• A. A home pregnancy test can be used right after your first missed period.
• B. These tests are most accurate after you have missed your second period.
• C. Home pregnancy tests often give false positives and should not be trusted.
• D. The test can provide accurate information when used right after ovulation.

Correct answer: A

Rationale: The correct answer is A. Home pregnancy tests detect hCG, a hormone produced during pregnancy, and are most accurate after the first missed period when hCG levels are higher. Testing too early may result in a false negative. Waiting until after the first missed period increases the reliability of the test results. Choice B is incorrect as waiting until after the second missed period is unnecessary and may delay seeking appropriate healthcare. Choice C is incorrect as home pregnancy tests are generally reliable when used correctly. Choice D is incorrect because ovulation occurs before the period, and testing immediately after ovulation may not provide accurate results.

5. The nurse is caring for a 2-day old neonate who has not passed meconium and has a swollen abdomen. The healthcare provider reviews the flat plate X-ray of the abdomen and makes a tentative diagnosis of Hirschsprung's disease. Which pathophysiological process is consistent with this neonate's clinical picture?

• A. The congenital absence of parasympathetic ganglion cells to large intestine produces no peristalsis.
• B. Pyloric obstruction causes reflux and projectile hematemesis.
• C. Partial imperforated anal opening limits passage of stools.
• D. Peristalsis moving against the intestinal obstruction causing hyperactivity of the bowel.

Correct answer: A

Rationale: Hirschsprung's disease is caused by the absence of parasympathetic ganglion cells in the large intestine, leading to a lack of peristalsis and obstruction.

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