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31 Cards in this Set

  • Front
  • Back
The five factors or P's of labor and birth
1. Passenger (fetus, placenta)
2. passageway (birth canal)
3. powers (contractions)
4. position of the mother
5. psyche (psychologic responses)
Membrane-filled spaces that are located where the membranous sutures that unite the bones in the fetal/neonate skull intersect.
fontanels
slight overlapping of the bones of the fetal skull that occurs during childbirth; it permits the skull to adapt to the carious pelvic diameters
molding
Part of the fetus that enters the pelvic inlet first. The three main types are __________ (head first) _________ (buttocks first), and ________.
presentation; cephalic, breech, shoulder
Part of the fetal body first felt by the examining finger during a vaginal examination. The three types are ________, _________, and _______.
Presenting part; occiput, sacrum, scapula
Relationship of the long axis (spine) of the fetus to the long axis (spine) of the mother. There are 2 types: _________, when the spines are parallel to each other, and ________, when the spines are at right angles or diagonal to each other
Lie; longitudinal (vertical)
transverse (horizontal, oblique)
_____ Relationship of the fetal body parts to one another. The most common type is one of general _________.
attitude (posture); flexion
___________ Largest transverse diameter of the fetal skull.
Biparietal
__________ smallest anteroposterior diameter of the fetal skull to enter the maternal pelvis when the fetal head is in complete flexion.
suboccipitobregmatic
Relationship of the fetal presenting part to the four quadrants of the maternal pelvis
position
term that indicates that the largest transverse diameter of the presenting part has passed through the maternal pelvic brim or inlet into the true pelvis reaching the level of the ischial spines
engagement
Relationship of the presenting part of the fetus to an imaginary line drawn between the maternal ischial spines; this is a measure of the degree of fetal descent through the birth canal
station
The 2 components of the maternal passageway or birth canal
bony pelvis
soft tissue
Shortening and thinning of the cervix during the first stage of labor; it is expressed as a percentage.
effacement
Enlargement or widening of the cervical opening (os) and the cervical canal, which occurs once labor has begun; degree of progress is expressed in centimeters (cm) from less than 1 cm to 10 cm
dilation
descent of the fetus's presenting part into the true pelvis approximately 2 weeks before term for the primigravida and after uterine contractions are established and true labor is in progress for the multipara
lightening
primary powers of labor
involuntary uterine contractions
secondary powers of labor
bearing down (pushing)
brownish or blood-tinged cervical mucus representing the passage of the mucous plug as the cervix ripens in preparation for labor
Operculum
the 7 turns and adjustments of the fetal head, to facilitate passage through the birth canal.
Mechanism of labor (cardinal movements)
In a vertex presentation these truns and adjustments in the mechanism of labor include
1. engagement
2. descent
3. flexion
4. internal rotation
5. extension
6. external rotation (restitution)
7. expulsion
Pushing method during the second stage of labor characterized by a closed glottis with prolonged bearing down
valsava maneuver
Process of moving the fetus, placenta, and membranes out of the uterus and through the birth canal.
birth
Protein found in plasma and cervicovaginal secretions of pregnant women before the onset of labor; its presence is being used to predict the likelihood of preterm labor in women who are at increased risk for this complication
fetal fibronectin
The first stage of labor is considered to last from the onset of _________ to full _________ of the cervix.
regular uterine contractions
dilation and effacement
labor is divided into three phases, namely, ________, _________ and ____________.
latent
active
transition
The second stage of labor lasts from the time the cervix is fully _________ to the ______________
dilated and effaced
birth of the baby
The third stage of labor last from the ___________ until the ____________ is delivered
birth of the baby
placenta
The forth stage of labor is the period of immediate ________ when ___________ is reestablished.
recovery
hemostasis
The 4 factors that affect fetal circulation during labor
1. position
2. blood pressure
3. uterine contractions
4. umbilical cord blood flow
Morphine-like chemicals produced naturally in the body which raise the pain threshold and produce sedation
endogenous endorphins