Lesson 11 Flashcards
What releases prostaglandin
Uterine muscle stretching
Triggers contraction at the set point
Placental age
Reduce progesterone formation and increase prostaglandin formation
Rising fetal cortisol levels
What are the three theories of labor onset
Uterine contraction
Decrease of progesterone
Increase of prostaglandin
Change in the ratio of estrogen and progesterone stimulates
Uterine contraction
Initiation labor is set to result from the release of arachidonic acid
Prostaglandin Theory
This acid increase prostaglandin synthesis which in turn caused uterine contraction
Arachidonic synthesis
Pressure on the cervix stimulates the hypophysis to release oxytocin from maternal posterior pituitary gland
Oxytocin Theory
The presence of this hormone causes initiation of contraction and the smooth muscles of the body
Oxytocin
The concept that any hollow body organ when strretched to its capacity will inevitably contract
Uterine Stretch Theory
Because of decreased blood supply and functional capacity, the uterus starts to contract
Placental Degeneration Theory
What theory is the decrease amount of progesterone
Progesteron Deprivation Thelry
All pregnant women should be taught these signs so they can recognize when labor is beginning
Premonitory Signs of Labor
What are the PREMONITORY SIGNS OF LABOR
Lightening
Increase in level of activity
Braxton Hicks Contraction
Ripening of the cervix
Slight weìght loss
Fetal presenting part in the oelvis, approximately 10 to 14 days before labor begins
Lightening