A nurse is caring for a newborn in the neonatal unit following delivery.

Complete the following sentence by using the list of options.
The nurse should further evaluate

________

and

________

to determine if the newborn is experiencing a complication.

The nurse should further evaluate respiratory characteristics and muscle tone to determine if the newborn is experiencing a complication.

Rationale for correct answers
Respiratory characteristics are critical to assess because irregular and shallow breathing in a newborn can indicate neurological or respiratory dysfunction. Normal neonatal respiratory rate ranges from 30 to 60 breaths per minute with regular pattern; deviations may signal distress or central nervous system issues. Muscle tone evaluation is essential since increased tone with tremors suggests possible neurologic irritability or withdrawal. Normal newborn muscle tone should be moderate, neither hypotonic nor hypertonic, with symmetrical movement. These signs correlate with the high-pitched cry, tremors, and exaggerated reflexes noted, which may indicate neurological complications such as withdrawal syndrome or hypoxic-ischemic encephalopathy.

Rationale for incorrect answers
Heart rate (A) is important but was not reported abnormal; normal neonatal heart rate ranges from 120 to 160 beats per minute and the absence of murmurs suggests no cardiac compromise. Temperature (C) is less urgent as mucous membranes are moist and skin warm and dry, indicating stable thermoregulation; normal newborn temperature is 36.5–37.5°C. Feeding patterns (D) appear adequate with no difficulty reported, making this less immediately concerning.

Rationale for incorrect answers
Moro reflex (A) and Babinski reflex (B) are both present and exaggerated, which may be reactive but less specific for immediate concern than muscle tone abnormalities. Skin color (D) is normal without cyanosis or jaundice, reducing the likelihood of hypoxia or hemolytic issues.

Take home points

• Respiratory pattern irregularities in newborns may indicate neurological or respiratory dysfunction.
• Abnormal muscle tone and tremors are key signs of potential neurological complications.
• Normal heart rate, temperature, feeding, and skin color reduce likelihood of cardiac or systemic illness.
• Reflex exaggeration alone is less specific than muscle tone and respiratory changes for early complication detection.

Choice A rationale

Herpes simplex virus 2 (HSV-2) can be harmful to a developing fetus and newborn. While primary infection during the first trimester can rarely lead to congenital anomalies, the most significant risk is neonatal herpes, which occurs when the newborn is exposed to the virus during passage through the birth canal if active lesions are present. Neonatal herpes can cause severe, life-threatening complications.

Choice B rationale

Transmission of HSV-2 to the newborn is significantly higher if active genital lesions are present at the time of vaginal birth. The virus can be shed from these lesions and infect the infant as they pass through the birth canal. Therefore, a Cesarean section is typically recommended if active lesions are present at the onset of labor.

Choice C rationale

Wearing tight-fitting undergarments can increase moisture and friction, potentially irritating existing lesions and hindering healing. Loose-fitting cotton undergarments are generally recommended to allow air circulation and reduce irritation, promoting a more favorable environment for lesion resolution and comfort.

Choice D rationale

Antiviral medications, such as acyclovir, valacyclovir, or famciclovir, can help manage genital herpes by reducing the frequency, duration, and severity of outbreaks. They work by inhibiting viral replication. However, these medications do not cure the condition; HSV-2 remains a lifelong viral infection.