Face to pubis delivery is most common seen in which kind of pelvis –
**Core Concept**
Face to pubis delivery, also known as occipito-pubic delivery, occurs when the baby's head is positioned in such a way that the occipital bone (back of the skull) is aligned with the pubic bone during delivery. This type of delivery is influenced by the shape and size of the mother's pelvis, specifically the pelvic inlet, mid-pelvis, and outlet.
**Why the Correct Answer is Right**
The correct answer is associated with a pelvis that has a larger anterior-posterior diameter, allowing for a more favorable orientation of the baby's head during delivery. The pelvic inlet, mid-pelvis, and outlet of this type of pelvis are more spacious, enabling a face-to-pubis delivery. This is in contrast to a more narrow or heart-shaped pelvis, which may predispose to brow or face presentations.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as it does not specify a type of pelvis that is commonly associated with face to pubis delivery.
**Option B:** This option is incorrect as it may refer to a more narrow or heart-shaped pelvis, which is not conducive to face to pubis delivery.
**Option C:** This option is incorrect as it may refer to a pelvis with a more transverse diameter, which is not typically associated with face to pubis delivery.
**Clinical Pearl / High-Yield Fact**
In obstetrics, the shape and size of the pelvis play a crucial role in determining the mode of delivery. A pelvis with a larger anterior-posterior diameter is more likely to accommodate a face-to-pubis delivery, while a more narrow or heart-shaped pelvis may require alternative delivery methods.
**Correct Answer:** G. Anthropoid pelvis