Flashcards in normal labor Deck (34)
after 37 weeks
an incr in myometrial activity resulting in effacement & dilatation of the uterine cervix
mean duration of human pregnancy?
36 weeks-42 weeks
onset before 36 complete weeks
onset after 42 weeks
is dx of labor clinical or medical
what phase of labor: progesterone, prostacyclin, relaxin are active in quiescence
what phase of labor: slow, progressive structural changes of extracellular matrix
cervical ripening occurs in what stage of labor?
during wat stage does functional progesterone withdrawal occur?
lightening or fetal presenting part descends in waht part of labor?
which phase is the puerperium?
oxytocin induces states of rigid myometrium w/ constant contraction
mechanics of labor are related to what 3 P's
adequate uterine activity is?
3-5 contractions in 10 min
what is the passenger lie?
spatial relationship of fetal spine to maternal spine
the relationship of the presenting part of the maternal ischial spines
sacral promontory to superior aspect of pubic symphysis
true (obstetric) conjugate
what is the smallest diameter of the inlet?
what is the limiting factor in the midcavity
are interspinous diameters or pelvic outlet diameters of greater clinical significance?
interval b/w onset of labor & full cervical dilation
first stage of labor
what are the 3 phases of the 1st stage of labor
1. latent phase
2. active phase
3. descent phase
when is the onset of the active phase?
4 cm dilation of cervix
descent phase of labor begins when
9-10 cm dilation of cervix
the third stage of labor should be no longer than ____ in what type of births
30 min; nulliparas or multiparas
name for the interval b/w full cervical dilatation and delivery of infant
second stage of labor
third stage of labor?
deliver of placenta
passive management of placenta delivery indicators (3)
1. lengthening of umbilical cord
2. gush of blood from vagina
3. change in shape of uterine fundus