Flashcards in Fetal Surveillence Deck (22):
How to survey fetus?
Biochem: oestriol(not anymore)
U/S fetal well being? 4 things
Liquor Volume amniotic fluid level
Fetal biome try
Breathing movements(if well oxygenated)
Tone (flexion=good, extension = bad
Doppler U/S: 2 arteries?
U/S on umbilical artery, how to measure?
Peak systolic and end diastolic flow ratio
Total white out of both lungs in neonates?
Hyaline membrane disease
pulmonary HTN - sildenafil, NO
Placenta hypoxia, where does blood go?
Want it to go to good area but like lungs:
Umbilical arteriolar vasoconstriction
4 things to look for in CTG?
Acceleration - fetal excitement (2 in 20 minutes)
Deceleration - no bad
Variability - good: sinus arrythmias (5-25)
4 types of variability
4 Ss for reason of decreased variability
Sinusoidal CTG why?
Severe fetal Anaemia
Early deceleration from what?
Head compression from contractions: simultaneous from contractions
Late deceleration S?
After peak contraction
Adaptive response to hypoxia, don't just treat
Need early delivery
Variable deceleration S cause?
Rapid decal and rapid recovery
Variable deceleration bad waves?
Deep and wide with rebound tachy
Sudden crash deceleration?
Profound hypoxia, need immediate delivery
4 causes of sudden severe fetal hypoxia
Sustained uterine contraction
Ectopic beats 3 reasons
Terminal hypoxia (lots of spikes in CTG)
If fetus severe Bradycardia, cause?
Heart block - sjorjen's
What causes a straight line on CTG?
Fetal brain death