Assessing feasibility and maternal acceptability of a biomechanically-optimized supine birth position: A pilot study.

Background: In order to manage a protracted second stage of labor, "eminence-based" birth positions have been suggested by some healthcare professionals. Recent biomechanical studies have promoted the use of an optimized supine birthing position in this setting. However, uncertainty exists regarding the feasibility of this posture, and its acceptability by women.