CTG
CTG
Introduction
Cardiotocography (CTG) is used asses the fetal condition and uterine contraction
Indication
# All pregnant women
admitted to antenatal ward
# Mothers with reduced fetal movement
# Mothers with absent fetal movement
# Mothers with PV is bleeding after 24 -28 weeks of pregnancy
# Mothers with prelabour rupture of membrane
# After ARM if Liqure meconium stain
Procedure
Keep Mother in left lateral position
Identify position of fetal heart sound
Apply jelly over the place where hear sound heard
Keep probe over the jelly
Apply toco probe over the funds
Swith on machine and allow to record for at least 20 minutes
Interpretation
1.
Identify correct mother ( patient ) reads the
patient name on CTG paper
2.
Read date
and time on the CTG paper
3.
Look for a baseline heart rate
The line which cuts through most of the
most of the spikes
A t term 120 – 160 bpm
After 40 weeks - 110 – 150 bpm
Preterm – higher base line rate (
sympathetic over – activity parasympathetic develops late )
4.
Baseline variability
Reflect intact neurological pathway
Fetal oxygenation
Oxygen reserve
Capacity to centralize ( to CNS ) available
oxygen )
0 -5 bpm – decreased
6 – 25 bpm – normal
More than 25 bpm salutatory – anemia , heart failure
5.
Acceleration
A rise of 15
beats
Last over 15
seconds
3 acceleration
over 20 minutes
6 Declarations
Early –
physiological ( head compression )
Late – Fetal
hypoxia
Variable
-
Cord
compression
-
Cord
prolapse
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