Face to pubis delivery occurs in ——— type of pelvis :
**Core Concept**
Face to pubis delivery, also known as a brow presentation, is a type of fetal presentation where the baby's face is positioned to emerge first, with the chin pointing towards the mother's pubic bone. This occurs due to the abnormal positioning of the baby's head in the birth canal.
**Why the Correct Answer is Right**
In a face to pubis delivery, the fetal head is not engaged in the pelvis, and the sagittal suture is not in a transverse or oblique position. The baby's face is positioned to emerge first, with the chin pointing towards the mother's pubic bone. This type of delivery is often associated with a contracted or asymmetrical pelvis, which makes it difficult for the baby's head to engage in the pelvis in a normal position.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not specify a type of pelvis that would lead to a face to pubis delivery. While a contracted pelvis can increase the risk of this type of delivery, it is not the only type of pelvis that can lead to this outcome.
**Option B:** This option is incorrect because it does not accurately describe the type of pelvis that would lead to a face to pubis delivery. A gynecoid pelvis is generally considered to be the most favorable type of pelvis for childbirth, and is not typically associated with this type of delivery.
**Option C:** This option is incorrect because it does not accurately describe the type of pelvis that would lead to a face to pubis delivery. A platypelloid pelvis is generally considered to be the least favorable type of pelvis for childbirth, but it is not typically associated with this type of delivery.
**Clinical Pearl / High-Yield Fact**
A face to pubis delivery is often associated with a contracted or asymmetrical pelvis, and can increase the risk of complications during delivery.
**Correct Answer:** C. Android pelvis