A nurse in a prenatal clinic is determining a client's estimated date of delivery using Naegele's rule. The first day of her last menstrual period was May 8. Which of the following dates should the nurse tell the client is her estimated date of delivery?

Choice A:

Fetal heart tone location: In a frank breech presentation, the fetal buttocks are positioned downward and the legs are extended straight up toward the head, placing the fetal heart closer to the mother's upper abdomen. This results in fetal heart tones being heard above the umbilicus at midline.

Gestation period: At 9 weeks of gestation, the fetus is still small and has ample room to move within the uterus, making breech presentations more common. However, it's important to note that the ideal position for childbirth is cephalic, with the head down.

Other presentations:

Cephalic presentations typically have fetal heart tones below the umbilicus.

Transverse presentations usually have fetal heart tones laterally, off to one side of the abdomen.

Posterior presentations, while still head down, can have fetal heart tones that are difficult to locate or muffled due to the position of the fetal back against the mother's spine.

Choice B:

Fetal position: In a transverse presentation, the fetus is positioned horizontally across the uterus, with the head and buttocks on either side. This typically results in fetal heart tones being heard laterally, rather than above the umbilicus at midline.

Choice C:

Fetal position: In a cephalic presentation, the fetus is head down, with the buttocks near the fundus of the uterus. This usually results in fetal heart tones being heard below the umbilicus, rather than above it.

Choice D:

Fetal position: In a posterior presentation, the fetus is head down, but facing the mother's back. While this can sometimes make fetal heart tones difficult to locate, they are typically still heard below the umbilicus, rather than above it.

Rationale for Choice A: Whitish vaginal discharge
While whitish vaginal discharge can occur in some cases of hydatidiform mole, it's not a specific or sensitive finding for this condition.
It can also be present in various other gynecological conditions, including normal pregnancy, infections, and hormonal imbalances.
Therefore, relying on whitish vaginal discharge alone for monitoring a potential hydatidiform mole could lead to misdiagnosis or delayed diagnosis.

Rationale for Choice B: Excessive uterine enlargement
Excessive uterine enlargement is a common sign of hydatidiform mole, but it's not always present and might not be detected early in the condition.
The uterus might not be significantly enlarged in early stages, and other factors like multiple pregnancies or uterine fibroids could also contribute to uterine enlargement.
Solely relying on uterine enlargement could miss cases of hydatidiform mole that haven't progressed to a noticeable degree.

Rationale for Choice C: Fetal heart rate irregularities
Fetal heart rate irregularities are not relevant in hydatidiform mole because there is no viable fetus present. Hydatidiform moles are characterized by abnormal growth of placental tissue without a normal fetus developing. Monitoring for fetal heart rate would be inappropriate and misleading in this context.

Rationale for Choice D: Rapidly changing hCG levels
This is the most accurate and reliable finding to monitor for in a suspected hydatidiform mole.
hCG is a hormone produced by the placenta, and it's typically elevated in pregnancy. However, in hydatidiform mole, hCG levels are often abnormally high and rise rapidly.
Serial hCG measurements can accurately detect and track the progression of a hydatidiform mole, even in its early stages. It's considered the gold standard for diagnosis and monitoring of this condition.