Theories of Labor - Intrapartal Care

Question 1

is the series of
events by which a
coordinated sequence
of involuntary,
intermittent, uterine
contractions expel a
fetus and placenta
from the uterus.

Answer 1

Labor

Question 2

The
increase in pressure from uterine
muscles stretches triggers the
release of prostaglandins.

Answer 2

Uterine Stretch Theory

Question 3

: Pressure on
the cervix stimulates the release
oxytocin from the maternal
posterior pituitary gland; triggers
the contraction of the smooth
muscles of the uterus

Answer 3

Oxytocin Theory

Question 4

As pregnancy
advances, a marked increase in estrogen level is noted
in relation to progesterone; rise in fetal cortisol levels
also inhibits progesterone production

Answer 4

Progesterone Deprivation Theory:

Question 5

A decrease in
progesterone amount also elevates the prostaglandin
level. Synthesis of prostaglandin, in return, causes
uterine contraction.

Answer 5

Prostaglandin Theory

Question 6

The
diminished blood supply to the
placenta triggers uterine contractions
which causes the initiation labor

Answer 6

Theory of Aging Placenta