FM CASE FILES 2 Flashcards
(147 cards)
tx for GBS during pregnancy
penicillin
others: ampicillin, cephalothin, erythromycin, clinda
how to confirm rupture of membranes
see amniotic fluid leaking from cervix
polling of amniotic fluid in vaginal fornix
Nitrazine paper - pH >6.5 in vaginal fluid
ferning on dried slide
prolonged rupture of membranes predisposes to what
infection
define first stage of labor
contractions until complete cervical dilation
latent phase
active phase - starts at 4cm
rate of dilatation
epidural vs nonepidural
NO EPIDURAL
- 2cm / hr (nulliparous)
- 5cm / hr (parous)
define second stage of labor
delivery of fetus
normal duration of 2nd stage of labor
2 hours (nulliparous) 1 hour (parous)
epidural can prolong these times by 1 hour
normal duration of 3rd stage of labor
30 min
labor depends on 3Ps
power (strength of contractions)
passenger (size, lie, position)
pelvis (shape and size)
what can cause of false-positive nitrazine test
semen
blood
bacterial vaginosis
all can elevate pH
how do you assess fetal well being when mother is admitted to L&D
fetal heart rate monitoring
with a doppler ultrasound
or fetal scalp electrode
(requires membranes to be ruptured)
what 3 things do you look at in fetal heart rate tracings
baseline heart rate
variability
heart rate changes
normal baseline heart rate of fetus
110-160
normal variability of fetus
3-5 cycles per minute
comomn causes of decreased fetal heart rate variability
fetus sleeping
cns depressants (narcotic analgesics)
prematurity
fetal acidemia 2nd to hypoxemia
define fetal heart rate accel
15 beats/min
15 sec
what causes early decels
compression of fetal head
what causes late decel
uteroplacental insufficiency
causes:
maternal hypotension (given epidural or oxytocin)
maternal HTN, DM, placental abruptio
what causes variable decel
umbilical cord compression during contractions
what do you use to monitor uterine contractions and its strength
external toco
strength: IUPC (need ruptured membranres)
giving too much oxytocin during labor can result in what consequence
uterine hyperstimulation
late decels
cardinal movements during labor
refers to movement of fetal head
flexion
internal rotation (occiput to move anteriorly - symphysis)
extension
external rotation
maneuvers for shoulder dystocia
McRoberts Maneuver (hyperflexion)
suprapublic pressure
episiotomy
most calcium is found where in the body?
bones - 98% of total
bound to albumin - 1%
watch out for low albumin, causing low calcium (correct for this)
free - 1% (active)