**Question:** Techniques of delivery of after coming head in breech presentation:

A. External cephalic version (ECV)
B. Manual extraction of the presenting part
C. Misoprostol vaginal administration
D. Elective cesarean section

**Core Concept:**
In breech presentation, the baby's buttocks or legs are engaged in the pelvis at the time of delivery. Depending on the stage of labor and fetal condition, different techniques can be employed to facilitate a vaginal delivery.

**Why the Correct Answer is Right:**
During the second stage of labor when the head has come down and is engaging, the most appropriate option is manual extraction of the presenting part (Option B). This technique involves the obstetrician gently applying pressure with their hand to assist the baby's head in coming out. In some cases, misuse of ECV (Option C) may lead to fetal compromise, thus it is generally not recommended in this scenario unless contraindications are ruled out. Elective cesarean section (Option D) is a surgical procedure usually reserved for cases when vaginal delivery poses a significant risk to the baby or mother.

**Why Each Wrong Option is Incorrect:**

A. External cephalic version (ECV) (Option A) is effective in around 50% of cases in changing the presentation from breech to vertex, and is more commonly used for primary breech presentation. However, it is contraindicated in secondary breech presentation and when the baby is in distress.

B. Misoprostol vaginal administration (Option C) is a synthetic prostaglandin E1 analog used to increase uterine contractions in labor induction, but is not directly related to the delivery of a breech baby.

C. Elective cesarean section (Option D) is a surgical procedure in which a cesarean section is scheduled before labor, whereas in this scenario, vaginal delivery is the preferred method as long as there are no contraindications.

**Clinical Pearls:**
1. In breech presentation, the head should be the first part to engage and descend in the birth canal, followed by the shoulders.
2. The decision to perform a cesarean section should be carefully weighed considering the maternal and fetal factors, including the mother's age, parity, and previous cesarean sections.
3. In primary breech presentation, ECV may be attempted before considering cesarean section. However, in secondary breech presentation, cesarean section is the first choice.