A pregnant client at 10 weeks gestation has been diagnosed with Gestational diabetes.

The nurse is discussing the risks of congenital anomalies due to hyperglycemia during the first trimester.

Which congenital anomalies should the nurse include in the discussion? Select all that apply.

Choice A rationale

Creating an environment that is dark and quiet facilitates the natural production of melatonin by the pineal gland. Light exposure, especially blue light, inhibits the suprachiasmatic nucleus, which regulates the circadian rhythm. By minimizing sensory input and light, the child’s nervous system can transition from an alert state to a restorative sleep state more efficiently. This promotes longer sleep duration and better quality of Rapid Eye Movement cycles.

Choice B rationale

Engaging in a quiet, low-stimulus activity like reading serves as a positive sleep hygiene ritual. It allows the child to decompress from the day's stressors and lowers the heart rate and cortisol levels. Unlike digital media, physical books do not emit high-intensity light that interferes with sleep architecture. Establishing a consistent pre-sleep routine helps signal the brain that it is time to wind down, making the onset of sleep much easier.

Choice C rationale

Limiting media exposure is critical because electronic devices emit blue light that suppresses melatonin secretion and increases cognitive alertness. The content of media can also be psychologically stimulating or anxiety-provoking, which keeps the sympathetic nervous system active. Reducing screen time at least one hour before bed ensures that the brain's neurochemistry is balanced for rest. This intervention is a cornerstone of pediatric sleep hygiene and behavioral health.

Choice D rationale

Watching a movie in bed is counterproductive to sleep hygiene because it associates the bed with wakeful, stimulating activities. The bed should be reserved primarily for sleep to strengthen the psychological association between the furniture and rest. Furthermore, the visual and auditory stimulation from a movie keeps the brain in an active processing mode. This prevents the child from entering the initial stages of non-rapid eye movement sleep effectively.

Choice E rationale

Delaying bedtime often leads to overtiredness, which can paradoxically make it harder for a child to fall asleep due to increased levels of cortisol and adrenaline. A consistent sleep schedule is vital for maintaining a stable circadian rhythm. Shifting the bedtime later disrupts the internal biological clock and can lead to sleep deprivation, which negatively impacts cognitive function, mood regulation, and physical growth during the school-age years.

Choice A rationale

Contractions that diminish or disappear with ambulation or a change in position are a hallmark of Braxton Hicks contractions, which are false labor. True preterm labor contractions continue and typically intensify regardless of the client's activity level. If walking causes the sensations to stop, it indicates that the uterus is simply irritable rather than undergoing the coordinated, rhythmic contractions required to cause cervical effacement and dilation, which defines the start of actual physiological labor.

Choice B rationale

True labor contractions, including those in preterm labor, often begin in the lower back and radiate toward the front of the abdomen. This pattern reflects the neurological pathways involved in uterine contractions and the engagement of the fetus in the pelvis. Intermittent contractions that follow this specific radiation pattern and increase in frequency are highly suspicious for preterm labor. Braxton Hicks are generally felt only in the front of the abdomen or the groin area.

Choice C rationale

Irregular contractions that vary in intensity and lack a predictable rhythm are characteristic of Braxton Hicks. These are often described as a tightening or squeezing sensation that does not become stronger or closer together over time. True labor involves a progressive increase in the strength, duration, and frequency of the contractions. When the intensity remains variable and does not follow a crescendo pattern, it is less likely to be causing the cervical changes of labor.

Choice D rationale

The timing of contractions in the evening is not a definitive diagnostic feature of preterm labor. Braxton Hicks contractions often occur more frequently at the end of a long day when the client is tired or dehydrated. While preterm labor can occur at any time, the mere presence of evening contractions without other signs like back pain or cervical change is common in late pregnancy. The diagnostic focus is on the quality and regularity rather than the clock. .