OB FHR strips Flashcards
what are the 3 types of FHR strips
early decels
Late decels
Varible decels
what is normal FHR
125-150 bpm
Early Decels:
what is the usual etiology
head compression or stretching of the neck during uterine contraction
Early Decels:
the FHR may drop how much
10-14 bpm
Early Decels:
should you worry about early decels?
no they are benign
Early Decels:
decribe the strip seen
mirror the uterine contraction
10-14 bpm decrease with each contraction
Start and end with comtraction
Uniform in appearance
Late Decels:
what is the etiology?
Uteroplacental insufficiency
and fetal compromise w/ decrease in HR
what strip rhythm is most likely to go for C-section 1st
Late Decels:
Late Decels:
describe the strip
Decels occur at or following the peak of contraction
occur w/ each contraction
start 10-30 sec after contraction start
uniform in appeaance
vary indepth with strength of ocntraction
Late Decels:
is there beat to beat varibility
sometimes
Late Decels:
the decrease in HR is due to what?
decrease in arterial oxygen tension at chemoreceptors of SA node
Late Decels:
are considered sever f FHR decreases how much?
> 45 bpm
Late Decels:
are associated with what complication
abruption
varible Decels:
What is the etiology
cord compression
varible Decels:
what does the strip look like?
NON uniform
Variable onset, duration, magnitude
HR > 30 bpm
varible Decels:
Does it maintain beat to bat variabliltiy?
yes
varible Decels:
Are considered sever if what?
FHF decreases by 60 BPM
HR less than 60 bpm
Duration last longer than 60 sec
what is a mnemonic to remember these
VEAL CHOP
V Cord compression
E Head compresion
A ok
L Placental insuficiency
Name
late decel
Name
early
name
variable
