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44 Cards in this Set

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Definition:

progressive effacement and dilation of the cervix, resulting from rhythmic contractions of the uterine musculature
Labor
Definition:

Uterine contractions w/o cervical dilation
False Labor

(Braxton-Hicks contractions)
what is "bloody show" associated with at term?
extrusion of endocervical gland mucous
lower abdominal and groin pain are usually assoc w/ what type of labor?
False labor
Definition:

the descent of the fetal head into the pelvis and the changing contour of the abdomen late in pregnancy
Lightening
what is the definition od "fetal lie"?
relationship of the long axis of the fetus w/ the maternal long axis
what is the "Presentation" determined by?
portion of the fetus lowest in the birth canal
what is "Position" defined as?
relationship of the fetal presenting part of the right and left side of the pelvis
the descent of the presenting part is identified by which Leopold maneuver?
Third maneuver
the location of the small parts is determined by which Leopold maneuver?
Second maneuver
determining what occupies the fundus is accomplished by what Leopold maneuver?
First maneuver
identifying the cephalic prominence is accomplished by what Leopold maneuver?
Fourth maneuver
what is the most common "fetal lie" found during early labor?
Longitudinal
what is the most common "fetal presentation" found in early labor?
Vertex
Definition:

the turning of the fetal head toward the sacrum
Anterior Asynclitism
what is the station of a patient in labor w/ the vertex at the level of the ischial spines?
Zero
At Zero station, where is the biparietal diameter of the fetal head in relation to the pelvic inlet?
Passed below the pelvic inlet
the clinical significance of the fetal head presenting at zero station is that the biparietal diameter of the fetal head has negotiated what?
Pelvic inlet
what is cervical effacement?
the degree of cervical thinning
how is the First Stage of Labor described?
Onset of labor to full cervical dilation
how is the Second Stage of Labor described?
Complete dilation of the cervix to delivery of the infant
how is the Third Stage of Labor described?
Delivery of the infant to delivery of the placenta
how is the Fourth Stage of Labor described?
period extending up to two hours after delivery of the placenta
the Active Phase of the first stage of labor is defined to begin when the cervix is how dilated?
4 cm
what describes the cardinal movement of labor that allows the smaller diameter of the fetal head to present to the maternal pelvis?
Flexion
what describes the movement of the fetal head as it reaches the introitus?
Extension of the fetal head
what describes the movement of the fetal head to "face forward" relative to the shoulders?
External rotation
Definition:

movement of the presenting part through the birth canal
Descent
Times in Nulliparas:

1) Latent phase of stage 1

2) Active phase of stage 1

3) Second stage of labor
Nulliparas:

Latent phase of stage 1: 6.5 hours

Active phase of stage 1: 4.5 hours

Second stage of labor: 1 hour
Times in Multiparas:

1) Latent phase of stage 1

2) Active phase of stage 1

3) Second stage of labor
Multiparas:

Latent phase of stage 1: 5 hours

Active phase of stage 1: 2.5 hours

Second stage of labor: 0.5 hours
during the active phase of labor, if electronic monitoring is not used, the fetal heart rate should be auscultated how often?
every 15 min
during the second stage of labor, if electronic monitoring is not used, the fetal heart rate should be auscultated how often?
each uterine contraction
an external tocodynamometer provides information about what?
Contraction frequency
the sensory nerves form the lower birth canal and the perineum enter the spinal cord where?
S2 - S4
What is an epidural best used for specifically compared to a spinal and pudendal?
Epidural:
Active phase of labor and delivery

Spinal:
short-term for vaginal and abdominal delivery

perineal anesthesia for vaginal delivery
what is the major cause of maternal mortality from OB anesthesia?
Aspiration of vomitus
what is the MC result of compression of the fetal head during delivery?
Molding
what is the usual postpartum blood loss in a vaginal delivery?
500 mL
what is the First-degree vaginal laceration at birth?
involves the vaginal mucosa and perineal skin
what is the Second-degree vaginal laceration at birth?
involves the underlying fascia or muscle but not rectal sphinctor or rectal mucosa
what is the Third-degree vaginal laceration at birth?
extends through rectal sphinctor but not into the rectum
what is the Fourth-degree vaginal laceration at birth?
extends into the rectal mucosa
during the delivery of the fetal head the likelihood of laceration or extension of episiotomy is decreased by what maneuver?
Ritgen maneuver
how many minutes should one wait for the spontaneous extrusion of the placenta?
30 minutes