Module 4 - Normal Labor and Birth Questions and Answers with Complete Solutions | 100% pass

what are the 5 P's affecting labor and short description? - 1) power - primary: uterine ctx - 2ndary: maternal bearing-down 2) passage - maternal anatomy: mother's bony pelvis; tissues of the cervix; pelvic floor; vagina; introitus 3) position - position changes mom's anatomic and physiologic adaptation to labor 4) psychology 5) passenger - descent through the birth canal is determined by the fetal head size, lie, presentation, attitude, and position theories of labor onset - maternal factors? - - oxytocin release: stimulating nipples can cause oxytocin release and labor/ctx - cervix - uterine muscle: dehydration can make it cramp; over-distension leads to contractions - progesterone decrease: leads to a less relaxed uterus/ctx which leads to delivery - progesterone keeps you pregnant; it relaxes muscles and ligaments theories of labor onset - fetal-placenta factors? - - prostaglandin production: prod by fetal membranes and decidua which leads to uterine ctx - cortisol release: causes decreased progesterone release and increased prostaglandin release - placental aging - ROM - can begin the labor