CH 14 Flashcards
Continuous Electronic Fetal Monitoring
-uses a machine to produce a cont. tracing of the FHR
- objective:
1. provide info abot fetal oxygenation & prevent fetal injury from impaired oxygen
2. detect FHR changes early b4 they are prolonged and profound
Criteria for Using Continuous Internal Monitoring of FHR
-ruptured membranes
-dilation of at least 2cm
-present fetal part low enough to allow placement of the scalp electrode (-2 or below)
-not face presenting
IUPC- (intrauterine pressure catheter): laying against baby that will monitor the pressure in the uterus and we’ll know how strong the contractions are
Accelerations
increases of the fetal heart rate ABOVE the baseline
Artifact
fetal monitor not picking up tracing of fetal heart rate and plots anything
Baseline FHR
average FHR over a 10 minute period, with at least 2 min of strip at that level
Baseline Variability
the amount of varying the fetal heart rate does
Deceleration
decreases of the FHR
Electronic fetal monitoring
monitoring of the FHR either internal or external
4 Categories of Baseline Variability
Absent - undetectable, straight line, problem
Minimal: when baby is sleeping, mom has narcotics, < 5 bpm
Moderate: (NORMAL): range from 6-25 bpm
Marked: > 25 bpm
Baseline Changes : Accelerations
15 bpm x 15 sec if > 32 weeks
10bpm x 10 sec if < 32 weeks
Baseline Changes: 4 Decelerations
variable
early
late
prolonged
“VEAL CHOP”
Variable Decelerations
goes down QUICKLY, looks like a V or W
Early Decelerations
goes down slow, MIRRORS the contraction directly above
Late Decelerations
goes down slowly, happens at the END/ AFTER contraction
Prolonged Decelerations
anywhere, longer than 2 min but less than 10 min
more than 10 min = new baseline
