EFM Question and answers already passed EFM
disruption of normal fetal oxygenation during labor (and lead to acidemia)
objective of FHR is to prevent fetal injury that might result from...
eval fetal well being, ID fetal stress, diagnostic testing, helps eval labor progress
benefits of EF...
EFM
disruption of normal fetal oxygenation during labor (and lead to acidemia)
objective of FHR is to prevent fetal injury that might result from...
eval fetal well being, ID fetal stress, diagnostic testing, helps eval labor
progress
benefits of EFM
infection (internal), intrauterine perforation (internal), too many interventions,
supine postural hypotension, dec personal interaction, mom cant ambulate or
change position
risks of EFM
no dec in perinatal mortality, no dec in NICU admin, no dec in 1 min APGAR
<4, dec in neonatal seizures, inc in c section for low risk (effects of EFM), no
measurable impact on morbidity or mortality, high false pos rate to predict
neuro damage like cerebral palsy
major findings of the cochrane review 2013
legal record, recognizes fetus as a patient, dec workload, parental
reassurance
what reasons (not benefits to fetus per say) that we use EFM
,EFM
most common OB procedure in the US
2 arteries, 1 vein
how many veins and arteries are in the umbilical cord
vein
in the fetus, does an artery or a vein carry oxygenated blood from the placenta
to the fetus?
villi
transfer of O2, nutrients and waste between baby and mom are done
specifically through the
fetal trophoblasts
microscopic layer of ____ in the placenta serve as a filter to permit exchange
of waste and nutrients via diffusion
10-15%, 500-700ml
what percent of maternal CO perfuses the uterus each minute at term? how
many ml is that?
, O2 of mother, blood flow to placenta, uteroplacental circ, umbilical circ, fetus
innate ability to initiate compensatory mech to regulate the FHR
appropriate O2 flow to the fetus depends on these factors
dec
parasympathetic NS in baby causes the HR to dec/inc
inc
sympathetic NS in baby causes the HR to dec/inc
vagus nerve, 28-30 weeks
parasympathetic NS is mediated by what in the fetus? when does it develop?
variability
we rely on PNS/SNS to maintain this ___ (we look for it on EFM tracings)
PNS isnt mature
why would a premie baby have a higher HR?
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