CTG analysis Flashcards
what does DR C BRAVADO stand for
Define Risk, Contractions, Baseline RAte, Variability, Accelerations, Decelerations, Overall impression
Define risk
maternal- gestational diabetes, HTN, athma; obstetric- post date, multiple, prev C section, prem rupture of membranes; pre eclampsia
Contractions
look at how many contractions in 10 mins and duration and intensity (palpate this)
baseline rate
look at the average HR over 10 mins.
what can fetal tachy be due to
hypoxia, chorioamniotis (suspect if maternal fever), hyperthyroid, anaemia
what can moderate fetal brady be due to
post date, transverse presentation
what can severe fetal brady be due to
cord compression, prolapse cord, maternal seizures
look at variability
how much the HR peaks and troughs deviate from the baseline
what can reduced variability be due to
foetal sleeping, foetal acidosis, tachycardia, drugs eg opiates, prematurity, congenital malformations of the heart
how many accelerations should occur
2 every 15 mins
main reason for reduced variability
foetal sleeping
what are the types of decelerations
early, variable, late, prolonged
what is an early decel
begins at beginning of uterine contraction and stops at end of it. increased ICP causes incr vagal tone-physiological
what is a variable decel
rapid fall in baseline with variable recovery phase. may be no relationship to uterine contractions.
what can variable decal be due to
cord compression
