2 reasons for antenatal surveillance
ID patients at risk for fetal mortality/morbidity and decrease the rates of these
What is being measured in a non-stress test?
fetal heart rates (accelerations and variability)
Define a reactive test for a non-stress test
2 accelerations of 15 bpm ABOVE BASELINE lasting 15 sec each in a 20 minute period
What is a nonreactive non stress test?
something is missing so you didn?t get 2 acclerations in 20 min or one or both wasn?t 15 bpm above baseline, etc.
NST's are often done after this week
32 weeks gestation
What is a CST?
contraction stress test
What are 2 ways to perform a contraction stress test?
oxytocin or nipple stimulation (with warm towel) to induce contractions
What defines a VALID (not pos or neg) test contraction stress test?
the woman must have 3 contractions lasting 40-60 seconds within 10 minute period
Define negative and positive results of a CST
negative = no late decelerations with woman having adequate contractions; positive = late decelerations with > 50% of contractions
What defines a suspcious CST?
decelerations are present with some of the contractions but not > 50%
What defines an unsatisfactory CST?
inadequate uterine activity, i.e. not valid, oxytocin and nipple stim couldn?t induce contractions
What result from an NST and CST is a GOOD result? i.e. good news for mom/baby
NST a positive result is good, CST a negative result is good
What is the other way of antenatal testing aside from NST and CST?
Biophysical profile (BPP); it utilizes an NST and REAL TIME ULTRASOUND
What are the POSSIBLE scoring outcomes of a BPP?
0, 2, 4, 6, 8, 10 (10 =max) no such thing as 3, 5, 7 or 9
What are the 5 components of BPP?
fetal breathing movements, gross body movement, fetal tone, NST, and amniotic fluid volume
Which component of the BPP is "the first to show and the last to go"?
fetal breathing movements
for each of the 5 aspects of a BPP what are the 2 possible scores
either a 0 or a 2, why the person who came up with this decided to be a psycho and not make it 0 or 1 is beyond comprehension
When should you do antenatal testing on a diabetic mother
at 28-40 weeks
When should you do antenatal testing on a pre-ecclamptic woman
after 26 weeks
When should you do antenatal testing on a woman past her due date?
at 41-42 weeks
When should you do antenatal testing on a woman whose baby is diagnosied with IUGR?
at the time of diagnosis
When should you do antenatal testing on a woman with a history of a stillbirth?
at 32 weeks