vaginaldelivery Flashcards
what are the three stages of delivery
cervical dilation, delivery of infant, placental delivery
what are the the factors of labor 3 p’s
powers [uterine contraction], passenger [fetus],and passage [maternal pelvis]
what is the definition of labor
an increase in myometrial activity resulting in cervical dilatation and effacement
what is the clinical diagnosis of labor
regular painful contractions, progressive cervical effacement and dilatation
what are the powers
forces generated by the uterus, classical definition of adequate uterine activity, 3-5 contractions in ten minutes.
how could you determine the position of the babies head in the birth canal
differentiating the fontanels by vaginal examination
how do you measure the passage or bony pelvis
diagonal conjugate sacral promontory to the inferior margin of the pubic symphysis, and interspinous diameter distance between ischial spines. But all this doesn’t matter if progress is being made.
what are the cardinal movements of labor
engagement, flexion, descent, internal rotation extension and external rotation
what is engagement
achieved when presenting part is at zero station. Below the pelvic inlet.
what is flexion
occurs passively as the head descends, to present the smallest diameter ,suboccipital-bregmatic, for passage through the pelvis.
what is descent
downward passage of the presenting part through the pelvis
what is internal rotation
rotation of the presenting part from its original position to the OA position
what is extention
occurs once the vertex has descended to the level of the introitus and occiput is in contact with the pubic symphysis.
what is external rotation
return of the fetal vertex to the correct anatomic position in relation to the fetal spine
what is expulsion
delivery of the rest of the fetus
