Fetal Heart Rate Monitoring - Unit 2 (Karen) Flashcards
On the strip, how long is it between the thick lines?
How many CM per minute?
One minute.
3 cm (measured) in one minute.
Monitoring - best head through babies ____.
Back.
What is “baseline” ?
Where the fetal heart rate stays between contractions. Expressed as 1 number ending in a 0 or a 5 (125, 130, 135, etc.)
what is tachycardia?
FHR above 160 for 10 minutes or less.
Bradycardia - below 110 for 10 minutes or less. T/F?
What should we look for?
True.
Maybe you’re tracing moms? If mom’s is the same as what’s on the monitor for the baby, you’ve probably got mom’s!
What is variability?
“Jiggly” ness to the line.
Variability - occurs late in pregnancy. T/F?
True
Variability - what controls it?
ANS of fetus (sympathetic/parasympathetic)
Variability - is it bad?
NOT AT ALL. We want it.
What is absent variability?
varies 0-2 beats per minute.
What is minimal variability?
varies 2-5 beats in one minute.
Average/Moderate variability = what? Is it what we want?
5-25 bpm. IT IS WHAT WE WANT! :)
Marked variability - what is it? What does it indicate?
It indicates possible CNS pathology issues. Greater than 25bpm difference
What are periodic changes?
Fluctuations from the baseline.
What are accelerations? Are they good?
Fluctuation above baseline of at least 15 beats for at least 15 seconds. They are good
What are early decelerations? What do they mirror?
They mirror contractions - they’re vagal response for baby. Indicate labor progress - so check cervix - see if it’s time!
What are variable decelerations? what causes them?
They don’t look like the others - they’re deeper, longery, worrisome.
Cord compression.
Reposition, O2, IV fluid, etc.
10 min = bradycardia.
variable.
prolonged.
What are late decelerations?
Uterine-placental insufficiency - aka low blood flow through placenta. They are SUBTLE. Could be caused by low BP of mom, cocaine, abruption, HTN, diabetes.
Late/post-date babies are at risk.
Most fetal arrhythmia’s - they convert to NSR at birth. T/F?
True
Tachysystole - what is it?
5 or more contractions in a 10 minute window. Too many contractions, baby can’t recoup!
What is coupling?
Two contractions back to back - causes no variability, no accelerations, decels present, etc.
NICHD -
Category 1 -
Category 2 -
Category 3 -
1 = normal (reassuring). 2 = Indeterminate 3 = Abnormal (nonreassuring)
What’s the normal contraction pattern?
5 contractions or less in 10 minutes averaged over a 30 minute window
