NSG 1600-Labor & Delivery
1. Theories concerning the onset of labor.
Term Theory:: Progesterone (the keeper of the pregnancy) levels
decrease / prostaglandins and estrogen increase and start
contractions.
2. Theories concerning the onset of labor.
Stretch Theory:: The uterus can only stretch so much, causes the
brain to in- crease Oxytocin level and this starts contractions.
3. Theories concerning the onset of labor.
Placental Aging Theory:: 40 weeks (time to go) sends signal to
brain for Oxytocin to increase level and contractions begin.
4. Lightening: (laymen's term baby drops)
*Fetal head descends into pelvis
causing increase in pelvic and bladder pressure.
*Mom can breathe easier due to decrease in pressure on the
diaphragm.
5. Operculum: (laymen's term mucous plug) was a barrier against
bacterial infec- tion.
6. Effacement: *measured in percentages from 0-100%
*beginning between 35-37 weeks.
*Effacement does not indicate labor unless contractions are present.
*The Primipara effacement is complete before dilation occurs.
*The Multigravida effaces and dilates at the same time. (The labor
1/
, is generally quicker for the Multigravida)
7. Effaced:: 0-100%
8. Dilated:: 0-10cm.
9. True labor will become more intense; starts in the back &
feels worse with
: Ambulation.
When a mom comes to the hospital with contractions she is checked
for dilation and effacement and monitored. If she is not 4 cm dilated
and membranes intact they will have her ambulate in the hallway. The
ambulation will increase the contractions if she is truly in labor. If she
is not in labor the contractions will cease and they will send her home.
10.Rupture of membranes (ROM): If the mother's membranes do
not rupture spontaneously the Dr. will perform an amniotomy using
an amnihook. (The Dr. is responsible for ROM not the nurse.)
11.Cervical Effacement & Dilation: Note how cervix is drawn up
around present- ing part (internal os). Membranes are intact, and head
is not well applied to cervix.
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1. Theories concerning the onset of labor.
Term Theory:: Progesterone (the keeper of the pregnancy) levels
decrease / prostaglandins and estrogen increase and start
contractions.
2. Theories concerning the onset of labor.
Stretch Theory:: The uterus can only stretch so much, causes the
brain to in- crease Oxytocin level and this starts contractions.
3. Theories concerning the onset of labor.
Placental Aging Theory:: 40 weeks (time to go) sends signal to
brain for Oxytocin to increase level and contractions begin.
4. Lightening: (laymen's term baby drops)
*Fetal head descends into pelvis
causing increase in pelvic and bladder pressure.
*Mom can breathe easier due to decrease in pressure on the
diaphragm.
5. Operculum: (laymen's term mucous plug) was a barrier against
bacterial infec- tion.
6. Effacement: *measured in percentages from 0-100%
*beginning between 35-37 weeks.
*Effacement does not indicate labor unless contractions are present.
*The Primipara effacement is complete before dilation occurs.
*The Multigravida effaces and dilates at the same time. (The labor
1/
, is generally quicker for the Multigravida)
7. Effaced:: 0-100%
8. Dilated:: 0-10cm.
9. True labor will become more intense; starts in the back &
feels worse with
: Ambulation.
When a mom comes to the hospital with contractions she is checked
for dilation and effacement and monitored. If she is not 4 cm dilated
and membranes intact they will have her ambulate in the hallway. The
ambulation will increase the contractions if she is truly in labor. If she
is not in labor the contractions will cease and they will send her home.
10.Rupture of membranes (ROM): If the mother's membranes do
not rupture spontaneously the Dr. will perform an amniotomy using
an amnihook. (The Dr. is responsible for ROM not the nurse.)
11.Cervical Effacement & Dilation: Note how cervix is drawn up
around present- ing part (internal os). Membranes are intact, and head
is not well applied to cervix.
2/
