A pregnant client is planning travel to a foreign country as part of a work assignment and needs immunizations.
What would the nurse instruct the client about immunizations while pregnant?

Choice A rationale

Incorrect. The FHR tracing clearly demonstrates fluctuations consistent with moderate variability, which reflects healthy fetal autonomic nervous system function and adequate oxygenation. The baseline is within the normal range (110–160 bpm), appearing at 130–140 bpm. No periodic changes are present—specifically, there are no accelerations (≥15 bpm above baseline for ≥15 seconds) or decelerations.

Choice B rationale

Correct. This option accurately describes the FHR strip. The baseline is 130–140 bpm (normal range: 110–160 bpm). Moderate variability (amplitude 6–25 bpm) is present, indicating a well-oxygenated fetus with intact neurological function. No accelerations or decelerations are observed, confirming a Category I (normal) FHR tracing..

Choice C rationale

Incorrect. This option misidentifies the variability. The tracing shows moderate variability, not minimal (≤5 bpm). Minimal variability may be associated with fetal sleep cycles, prematurity, or hypoxia. Here, the strip demonstrates clear, irregular fluctuations >5 bpm. The baseline is normal, and the absence of accelerations and decelerations is correctly noted..

Choice D rationale

Incorrect. While moderate variability (6–25 bpm) is present, the tracing shows no accelerations or decelerations. This makes the documentation inaccurate. Early decelerations, which align with contractions and indicate fetal head compression, are not observed on this strip.

Choice A rationale

Hegar's sign is a probable sign of pregnancy. It is the softening of the lower uterine segment or isthmus, typically occurring about 6-12 weeks gestation due to increased vascularity and fluid accumulation. Probable signs are objective, detectable by a provider, but can be caused by conditions other than pregnancy, making them less definitive than positive signs.

Choice B rationale

Quickening is the mother's first perception of fetal movement, usually felt between 16-20 weeks gestation. This is considered a presumptive sign of pregnancy. Presumptive signs are the subjective changes experienced and reported by the woman, suggesting pregnancy, but they can be attributed to many other conditions (e.g., gas, peristalsis), hence they are the least reliable indicators.

Choice C rationale

Chadwick sign is a probable sign of pregnancy. It is the deep, dusky-blue coloration of the vaginal and cervical mucosa due to increased blood flow (hyperemia) and vascularity, often observable from 6-8 weeks gestation. Probable signs are objective changes noted by a provider but are not absolutely specific to pregnancy, as other conditions could cause pelvic vascular congestion.

Choice D rationale

A Positive pregnancy test (urine or serum) is considered a probable sign of pregnancy. These tests detect the presence of Human Chorionic Gonadotropin (hCG). While highly reliable, conditions like hydatidiform mole or certain medications can cause a false positive result, preventing it from being a definitive positive sign, which only includes visualization of the fetus, fetal heart tones, or palpation of fetal movement by an examiner.