A nurse on the labor and delivery unit is assisting in the care of a newborn at 1 hour old.

Exhibits

Click to highlight the findings that require follow-up. To deselect a finding, click on the finding again.

A.    A full-term newborn was delivered vaginally.
B.    APGAR was 7 at 1 min and 9 at 5 min.
C.    Newborn is 48.26 cm (19 in) and 4,224 g (9 lb 5 oz).
D.    Acrocyanosis present.
E.    Heart rate 150/min, temperature 36.5°C (97.7°F) rectally, and respiratory rate 45/min.
F.    Newborn was breastfed immediately after birth but had difficulty latching.
G.    During nurse data collection, the newborn is jittery with abnormal crying.
H.    Temperature 36.3°C (97.3°F) with mild hypotonia.

Choice A rationale

Placenta previa, a condition where the placenta partially or completely covers the cervix, is primarily associated with risk factors such as previous cesarean sections, multiparity, and advanced maternal age. Heroin use does not have a direct causal link to the development of placenta previa.

Choice B rationale

Heroin use during pregnancy is strongly associated with an increased risk of preterm labor. Opioids can cause uterine contractions and alter placental blood flow, leading to premature cervical changes and the onset of labor before 37 weeks of gestation, impacting fetal development.

Choice C rationale

Chromosomal abnormalities, such as Down syndrome or Turner syndrome, result from errors in chromosome number or structure during cell division. These genetic errors are not caused by maternal heroin use, although substance abuse can affect fetal development in other ways.

Choice D rationale

An increase in amniotic fluid, known as polyhydramnios, is often associated with conditions such as maternal diabetes, fetal gastrointestinal anomalies, or multiple gestations. Heroin use does not typically lead to polyhydramnios; rather, it is more commonly associated with oligohydramnios due to fetal growth restriction.

Choice A rationale: A full-term vaginal delivery is a normal and expected finding. Term gestation ranges from 37 to 42 weeks, and vaginal delivery is a common mode of birth associated with fewer complications than cesarean delivery. This finding does not indicate any abnormality or need for follow-up, as it reflects a standard, uncomplicated birth process.

Choice B rationale: APGAR scores of 7 at 1 minute and 9 at 5 minutes are within the normal range. A score of 7 to 10 is considered reassuring, indicating that the newborn is adapting well to extrauterine life. The improvement from 7 to 9 suggests effective transition and no ongoing distress, so no follow-up is required for this finding.

Choice C rationale: A weight of 4,224 g (9 lb 5 oz) classifies the newborn as macrosomic, which is defined as a birth weight over 4,000 g. Macrosomia increases the risk for neonatal hypoglycemia due to hyperinsulinemia from in utero exposure to maternal glucose. This condition requires close monitoring of blood glucose levels and feeding effectiveness to prevent complications like seizures or neurologic injury.

Choice D rationale: Acrocyanosis, or bluish discoloration of the hands and feet, is a common and benign finding in newborns during the first 24 to 48 hours of life. It results from immature peripheral circulation and does not indicate central cyanosis or hypoxia. Therefore, it is not a finding that requires follow-up unless it persists or is accompanied by other signs of distress.

Choice E rationale: A heart rate of 150/min, respiratory rate of 45/min, and rectal temperature of 36.5°C (97.7°F) are all within normal neonatal ranges. Normal heart rate is 120–160/min, respiratory rate is 30–60/min, and rectal temperature is 36.5–37.5°C. These values indicate stable vital signs and do not necessitate follow-up.

Choice F rationale: Difficulty latching during initial breastfeeding attempts may indicate poor feeding effectiveness, which is a concern in the context of neonatal hypoglycemia. Inadequate intake can exacerbate low glucose levels and delay stabilization. This finding requires follow-up to ensure the infant is feeding effectively and maintaining adequate glucose levels.

Choice G rationale: Jitteriness and abnormal crying are neurologic signs that may indicate hypoglycemia, hypocalcemia, or neurologic dysfunction. In this case, the newborn’s glucose was 35 mg/dL, below the normal threshold of 40–45 mg/dL. These symptoms warrant follow-up to monitor for recurrence and ensure resolution with feeding and glucose stabilization.

Choice H rationale: A temperature of 36.3°C (97.3°F) is slightly below the normal range of 36.5–37.5°C, indicating mild hypothermia. Mild hypotonia in conjunction with hypoglycemia and low temperature suggests systemic instability. These findings require follow-up to ensure thermoregulation and neurologic tone normalize with appropriate interventions.