Descent:
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(1) pressure exerted by the amniotic fluid. (2) direct pressure exerted by the
amniotic fluid. (3) force of the contraction of the maternal diaphragm and
abdominal muscles in the second stage of labor. (4) extension and
straigntening of the fetal body.
amniotomy
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artificial rupture of the membranes (amniotic sac)
, Engagement:
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When the biparietal diameter of the head passes the pelvic inlet, the head
is said to be engaged in the pelvic inlet.
*Asynclitism: one that is parallel to the anteroposterior plane of the pelvis)
Flexion:
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When fetus meets resistance by cervix, pelvic wall, or pelvic floor, it
normally flexes so that the chin is brought into closer contact with the fetal
chest.Flexion permits the smaller suboccipitobregmatic diameter (9.5cm)
rather than the larger diameters to present to the outlet.
2 Theories of Onset of Labor
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Mechanical Theory
Hormonal Theory
2nd stage of labor
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Give this one a try later!
(1) pressure exerted by the amniotic fluid. (2) direct pressure exerted by the
amniotic fluid. (3) force of the contraction of the maternal diaphragm and
abdominal muscles in the second stage of labor. (4) extension and
straigntening of the fetal body.
amniotomy
Give this one a try later!
artificial rupture of the membranes (amniotic sac)
, Engagement:
Give this one a try later!
When the biparietal diameter of the head passes the pelvic inlet, the head
is said to be engaged in the pelvic inlet.
*Asynclitism: one that is parallel to the anteroposterior plane of the pelvis)
Flexion:
Give this one a try later!
When fetus meets resistance by cervix, pelvic wall, or pelvic floor, it
normally flexes so that the chin is brought into closer contact with the fetal
chest.Flexion permits the smaller suboccipitobregmatic diameter (9.5cm)
rather than the larger diameters to present to the outlet.
2 Theories of Onset of Labor
Give this one a try later!
Mechanical Theory
Hormonal Theory
2nd stage of labor
Give this one a try later!
