NUR 126 OB Exam 1 Test Questions and Detailed Answers

5 P's of Labor -passenger = fetal presentation and placenta -passageway = birth canal -powers = contractions -position of mother -psychological response How does the nurse determine which direction the baby's occiput is facing? The nurse locates the infant's anterior fontanel. lie position (longitudinal, transverse, or oblique) of fetal spine in relation to maternal spine attitude relationship of fetal body parts When will flexion of the infant's head occur? with pressure against cervix, which allows engagement of infant's head in pelvis station level of fetal head in relationship to an imaginary line drawn between ischial spines measure in cms How is a transverse lie treated? by aversion; C-section if unsuccessful biparietal diameter 9.25 cm; largest/best indicator of fetal head size engagement term used to indicate that the largest transverse diameter of the presenting part has passed through the maternal pelvic brim or inlet into the true pelvis What station does engagement usually correspond to? Station 0; head right at level of ischial spine Where are negative stations located? above the ischial spine suboccipitobregmatic diameter 9.5 cm Normal Presentation -lie = longitudinal or vertical -presentation = vertex -reference point = occiput -attitude = complete flexion