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OBGYN Intrapartum Care Labor Defined
KYCOM Block 13
21
Medical
Graduate
01/17/2014

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Cards

Term
braxton hicks contractions: timing, cause, description
Definition
32-40wks
natural reaction to growing fetus and fluid and stretch on muscles (NO cervical dilation or effacement)

short, less intense than real, over lower, abd ad groin, hard feeling
Term
what can worsen braxton hicks contractions
Definition
dehydration
Term
define lightening
Definition
change the patient notes in shape of abdomen
feels the baby drop resulting in increased frequemcu of urination and easier bleeding
Term
define bloody show
Definition
blood tinged mucous resulting from cervical effacement
Term
define effacement
Definition
how thick the cervix is
Term
define latent labor dilation
Definition
up to 4cm
Term
define active labor dilation
Definition
4cm+
Term
changes to the uterus in pregnancy: muscle and fibers, cervix
Definition
upper uterine active segment: stays muscular
lower uterine passive segment: thins
muscular and fibrous changes in isthmus

gradual elongation of muscle fibers
as labor progresses fibers shorten to keep close to fetus forcing into canal

cervix remains closed until last 3-4 weeks. connect. tissue allows cervix to be taken into lower uterine segment and isthmus
Term
forces of labor (2)
Definition
primary/involuntary uterine contraction
secondary/voluntary uterine contraction (abd muscles)
Term
how are utering contractions initiated
Definition
one of two pacemakers located in each conual area of the uterine fundus. one predominates and initiates contraction in other

peach contraction is reached when all uterus fibers are stimulated (more in fundus, less in lower segment causing more pain in upper abd
Term
what is the normal force of a contraction
Definition
35-60 mmHg
Term
what are the stages of labor
Definition
1: interval between onset or labor and complete cervical dilatent
2: complete cervical dilation through the delivery of infant
3: from time of delivery of infant till delivery of placenta
4: immediate post partum period - 2h
Term
define latent labor
Definition
usually effacement and dilation
Term
define active labor
Definition
usually begins with cervical dilation at 3-4cm dilated
Term
explain the timing of dilation and station
Definition
getting to 8-10cm dilation is slow then its fast to 14 cm

getting from station 0 to 1 is slow but when dilation is 10cm it takes off and becomes position
Term
what do the numbers for station mean
Definition
negative: more inside than ASIS
0: at ASIS
positive: past ASIS
Term
define mechanism of labor
Definition
cardinal movements of labor, series of changes in attitude (tilt) and position of fetus for passage through pelvic cavity
Term
what are the cardinal movements of the fetus in labor
Definition
engagement: zero station
descent: moves into birth canal
flexion: puts chin down
internal rotation/restitution: turns chin inward
extension: extends chin back out
external rotation: rotates chin other way
expulsion: baby out
Term
define asynclitism
Definition
baby's head is coming out in the wrong position
Term
define molding
Definition
fetal head changes shape to adapt to bony pelvis
depression of parietal, frontal, and occipital bones
Term
define engagement
Definition
descent of biparietal diameter of fetal head brlow the inlet to tje level of the ischemial spines
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