OB FHR strips Flashcards

1
Q

what are the 3 types of FHR strips

A

early decels

Late decels

Varible decels

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2
Q

what is normal FHR

A

125-150 bpm

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3
Q

Early Decels:

what is the usual etiology

A

head compression or stretching of the neck during uterine contraction

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4
Q

Early Decels:

the FHR may drop how much

A

10-14 bpm

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5
Q

Early Decels:

should you worry about early decels?

A

no they are benign

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6
Q

Early Decels:

decribe the strip seen

A

mirror the uterine contraction

10-14 bpm decrease with each contraction

Start and end with comtraction

Uniform in appearance

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7
Q

Late Decels:

what is the etiology?

A

Uteroplacental insufficiency

and fetal compromise w/ decrease in HR

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8
Q

what strip rhythm is most likely to go for C-section 1st

A

Late Decels:​

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9
Q

Late Decels:​

describe the strip

A

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

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10
Q

Late Decels:​

is there beat to beat varibility

A

sometimes

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11
Q

Late Decels:​

the decrease in HR is due to what?

A

decrease in arterial oxygen tension at chemoreceptors of SA node

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12
Q

Late Decels:​

are considered sever f FHR decreases how much?

A

> 45 bpm

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13
Q

Late Decels:​

are associated with what complication

A

abruption

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14
Q

varible Decels:​

What is the etiology

A

cord compression

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15
Q

varible Decels:​

what does the strip look like?

A

NON uniform

Variable onset, duration, magnitude

HR > 30 bpm

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16
Q

varible Decels:​

Does it maintain beat to bat variabliltiy?

A

yes

17
Q

varible Decels:​

Are considered sever if what?

A

FHF decreases by 60 BPM

HR less than 60 bpm

Duration last longer than 60 sec

18
Q

what is a mnemonic to remember these

A

VEAL CHOP

V Cord compression

E Head compresion

A ok

L Placental insuficiency

19
Q

Name

A

late decel

20
Q

Name

A

early

21
Q

name

A

variable