In which pelvic shape do the sidewalls converge?

The android pelvic shape is characterized by sidewalls that converge, creating a heart-shaped inlet. This pelvic type is often associated with male pelvis characteristics, which means that it has a narrower pelvic cavity compared to the gynecoid shape. The convergence of the sidewalls can lead to complications during labor, as it may not provide as much space for the fetal head to navigate through the birth canal. Understanding the specific characteristics of different pelvic shapes is crucial for maternity nursing, as it can influence labor and delivery management.

The gynecoid pelvis, which is the most common and favorable pelvic shape for childbirth, has more rounded sidewalls that do not converge, allowing for easier passage during labor. The anthropoid pelvis is oval-shaped in its inlet and also has sidewalls that are less convergent than the android shape, providing a larger space. The platypelloid shape is characterized by a wide transverse diameter, which aids in fetal descent but does not have converging sidewalls either. Each pelvic shape has implications for maternal-fetal outcomes, particularly during labor and delivery.