Which newborn reflex is elicited by stroking the lateral sole of the infant's foot from the heel to the ball of the foot?

Choice A rationale

Accumulation of flatulence can cause abdominal discomfort after a cesarean birth, but it does not directly stimulate uterine contractions leading to afterpains. Afterpains are specifically related to the involution of the uterus, not gastrointestinal motility.

Choice B rationale

Breastfeeding stimulates the release of oxytocin from the posterior pituitary gland. Oxytocin is a powerful uterotonic hormone that causes the uterus to contract to its pre-pregnant size. These contractions are experienced as afterpains, especially in multiparous women whose uterine muscles may have less tone.

Choice C rationale

While some medications administered after birth can have side effects, severe cramps or afterpains are primarily a physiological response to uterine involution and the hormonal changes associated with breastfeeding, rather than a direct adverse effect of medication.

Choice D rationale

Healing of the abdominal incision after a C-section causes incisional pain, which is distinct from the cramping sensation of afterpains. Afterpains are specifically due to uterine contractions, not the healing process of the abdominal wall.

Rationales for Each Condition

Molar Pregnancy

1. Abdominal Pain: In a molar pregnancy, the uterus enlarges disproportionately due to abnormal trophoblastic growth. This excessive expansion can cause discomfort or mild cramping.
2. Blood Pressure: Molar pregnancies can be associated with gestational trophoblastic disease, which may lead to preeclampsia-like symptoms. However, this client’s blood pressure is currently within normal limits (120/78 mm Hg), so severe hypertension has not yet developed.
3. Ultrasound Findings: The presence of grape-like vesicles within the uterus and the absence of a fetal heartbeat are hallmark findings of a molar pregnancy, indicating abnormal placental tissue proliferation.
4. Perineal Pad Findings: The passage of small clear vesicles is a characteristic feature of a molar pregnancy, distinguishing it from other causes of vaginal bleeding in pregnancy.

Ectopic Pregnancy

1. Abdominal Pain: Ectopic pregnancies often cause sharp lower abdominal pain due to tubal rupture or irritation. However, in this case, the client’s pain is mild and less suggestive of tubal rupture.
2. Blood Pressure: If an ectopic pregnancy ruptures, hypotension due to internal bleeding would be expected. Since the client’s blood pressure is normal, this finding does not support an ectopic pregnancy.
3. Ultrasound Findings: The absence of a fetal heartbeat and vesicular structures inside the uterus make ectopic pregnancy unlikely, as ectopic pregnancies typically occur in the fallopian tube.
4. Perineal Pad Findings: Ectopic pregnancies rarely cause the passage of vesicular tissue, further suggesting that this is not an ectopic pregnancy.