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Flashcards in CTG analysis Deck (21):
1

what does DR C BRAVADO stand for

Define Risk, Contractions, Baseline RAte, Variability, Accelerations, Decelerations, Overall impression

2

Define risk

maternal- gestational diabetes, HTN, athma; obstetric- post date, multiple, prev C section, prem rupture of membranes; pre eclampsia

3

Contractions

look at how many contractions in 10 mins and duration and intensity (palpate this)

4

baseline rate

look at the average HR over 10 mins.

5

what can fetal tachy be due to

hypoxia, chorioamniotis (suspect if maternal fever), hyperthyroid, anaemia

6

what can moderate fetal brady be due to

post date, transverse presentation

7

what can severe fetal brady be due to

cord compression, prolapse cord, maternal seizures

8

look at variability

how much the HR peaks and troughs deviate from the baseline

9

what can reduced variability be due to

foetal sleeping, foetal acidosis, tachycardia, drugs eg opiates, prematurity, congenital malformations of the heart

10

how many accelerations should occur

2 every 15 mins

11

main reason for reduced variability

foetal sleeping

12

what are the types of decelerations

early, variable, late, prolonged

13

what is an early decel

begins at beginning of uterine contraction and stops at end of it. increased ICP causes incr vagal tone-physiological

14

what is a variable decel

rapid fall in baseline with variable recovery phase. may be no relationship to uterine contractions.

15

what can variable decal be due to

cord compression

16

what is a late decel

starts at the peak of contraction, recovers after contraction ends.

17

what is late decal due to

insufficient blood flow- hypotension, pre eclampsia

18

what investigations need to be done if a late decel

foetal blood sampling

19

what is the foetal blood sampling looking for

pH. if acidotic shows hypoxia so need an emergency C section

20

what is a prolonged decel

lasting >2 mins

21

what is the overall impression described as

reassuring, suspicious, pathological