Labor and Delivery (1) Flashcards
what is the birth passage?
from uterus through cervix into vagina
what are physiologic forces of labor
contractions
what is cephalic presentation?
head first
what is breech presentation?
butt first
what are the types of cephalic presentation?
vertex!!
cinisput??, brow, facial
what type of presentation is where you can see the face coming out?
occiput posterior
what is the most common/ideal presentation?
right occiput anterior (head to the right of pelvis and forward)
what is frank breech?
butt first
what is footling breech?
a foot coming out
what is transverse presentation
sideways, shoulder first
is flexed or extended preffered?
flexed inward
what are the 3 major parts of the fetal head?
face, base of skull, vault
describe the fusion of the face, base of skull, and vault
-face: bones well fused
-base of skull: 2 temporal bones well fused
-vault: NOT FUSED, held by sutures
what are the membranous spaces between cranial bones
sutures
what are the intersections of cranial sutures
fontanels
the anterior fontanel is ____ shaped and the posterior is _____ shaped
diamond, triangle
what is the ideal shape of the maternal pelvis?
gynecoid
what is the gradual thinning, shoertening, and drawing up of the cervix measured in percents from 0-100
effacement
what is the gradual opening of the cervix measures in cm from 0-10
dilation
what is dilation caused by?
fetal axis pressure (uterus contracts, pushes fetus down)
what is complete dilation
cerviz is fully dialted (10cm), cant feel cervix
what do 0% and 100% effacement mean?
0 = thick cervix
100 = paper thin
what is when the largest diameter of the presenting part passes through the pelvic inlet (BPD=bi-parietal diameter)
engagement
what is the relationship of the presenting part to the ischeal spines
station
what is zero station
baby is at the presenting part of the ischial spines
what is the strength of contractions called?
intensity
what is the frequency of contractions described as
the start of one contraction to the start of the next
what is duration of a contraction described as
start of one contraction to the relaxation of that same ocntraction
what is lightening
engagement, baby drops and settles
what are premonitory signs of labor? (feeling that something is going to happen)
-lightening
-increased frequency/duration of cont.
-vaginal bleeding - mucus plug
-cervix ripening (soft/thin)
-back pain
-SROM
-sudden energy burst (nesting)
what is done to confirm rupture of membranes?
ferning test (test amniotic fluid appearance)
nitrazine / amnio indicator (to r/o other secretions)
what are characteristics of true labor
- regular contractions
- inc. frequency, duration, strength
- progressive dilatation and effacement!!!!
- discomfort starts in back and radiates around body
what are characteristics of false labor?
- irregular contraction
- do not increase in frequency, duration, and strength
- do not lead to dilatation and effacement
- “hardening”sensation
what is pitocin, what is it used for, and what does it promote
-chemically manufactured version of oxytocin
-used to augment or induce labor
-promotes increased uterine tone following delivery
what is the cardiovascular response to labor?
- increase in cardiac output
- increased BP during contractions
what are fluid and elec responses to labor?
- diaphoresis
- hyperventilation
- inc. temp from muscle activity
respiratory responses to labor
- increased O2 demand
- mild metabolic acidosis compensated by respiratory alkalosis
renal responses to labor?
- increased renin & angiotensin to control uterine blood flow
- bladder pushed forward and up
GI responses to labor?
- motility reduced
- gastric emptying prolonged
- increased acidity of gastric contents
immune responses to labor?
- increased WBC (25-30,000) due to stress
- decreased blood glucose
what is a birth plan?
plan for the mother and the team for the best outcomes
name and describe the stages of labor/birth?
- 1st stage: 0-10cm dilated
- 2nd stage: 10cm dilated-delivery of the baby
- 3rd stage: delivery of the placenta
- 4th stage: first few hours postpartum
what are the phases within the first stage of labor?
- early/latent phase
- active phase
- transition phase
what phase of the first stage of labor starts with the onset of contractions?
early/latent phase
how are pain/contractions during the early/latent phase
mild contractions, able to cope with pain
what phase of the first stage of labor is where contractions intensify and anxiety increases?
active phase
how far is fetal descent during the active phase?
4-7cm
what is the typical pattern/distance of descent for nullipara and multipara?
nullipara: 1.2cm/hour
multipara: 1.5cm/hour
what phase of the first stage of labor is where dilation slows but descent increases, force and intensity of contractions increase, and there is significant anxiety?
transition phase
how much is dialted during the transition phase?
8-10 cm