NCC EFM EXAM Questions and Answers (Verified
Answers) (Latest Update 2025) UPDATE!! NCC
EFM practice NCC
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Terms in this set (217)
single MVP > 8 cm or AFI >24; 1% of pregnancies; 60%
idiopathic; multiple gestation, maternal diabetes,
Polyhydramnios
hydrops, anomalies, TORCH; ass'd with cardiac/GI
issues/renal issues
single MVP < 2 cm or AFI < 5 at term (less than 5%ile);
associated with FGR, placental abnormalities, urinary
Oligohydramnios
tract abnormalities, post-term pregnancies, ruptured
or idiopathic membranes
US transducer, depicts valve closure; uses
Doppler
autocorrelation
successive US waveforms at many points; current
Autocorrelation technology which is more accurate at detecting FHR
variability; controls artifact sound waves
detects change in contour with contractions; place at
Toco/tocotransducer fundus or at area of maximum palpation; difficult to
measure with obesity, polyhydramnios
R-R waves; still has issues with artifact; risk of injury,
Fetal scalp electrode
measuring maternal HR in instance of fetal demise;
measures
rupture and dilation required
, solid>fluid filled tips, measures mmHg and allows
IUPC amnioinfusion; issue with displacement, perforation,
placental abruption
goal is baseline 110-160, +/-accels, no decels; if
Intermittent auscultation present, put on continuous monitor min 20 minutes);
cannot determine variability or types of FHR decels
Active phase auscultation q15 min for high risk up to q30min
Second stage auscultation q5 min if high risk up to q15min
auscultate after a contraction x 30-60 seconds;
Fetal tolerance of labor
document rate, rhythm, accels, decels
doppler uses autocorrelation and detects valve
Doppler vs. fetoscope closure; fetoscope listens through opening in heart
wall?
confusing maternal and fetal heart rate; common with
repositioning, fetal movement, during pushing
Signal ambiguity (maternal tachycardia); can occur even with fetal
demise due to FSE recording maternal blood flow
through the placenta
when there is lower baseline or >50% contractions
Suspect signal ambiguity with accelerations (especially with pushing); verify and
document maternal heart rate via pulse oximetry
Halving occurs if FHR >180-200; may double if rate
Halving/doubling
<50
maternal oxygenation, uterine blood flow, placenta
Extrinsic factors exchange, umbilical blood flow; intrinsic factors = fetal
circulation, oxygenation of tissues, FHR regulation
Primary source of oxygen the maternal respiratory system
for the feus
60ml/min non-pregnant vs. 500-1000ml/min; 10-15%
Uterine blood flow
maternal cardiac output
Answers) (Latest Update 2025) UPDATE!! NCC
EFM practice NCC
Save
Terms in this set (217)
single MVP > 8 cm or AFI >24; 1% of pregnancies; 60%
idiopathic; multiple gestation, maternal diabetes,
Polyhydramnios
hydrops, anomalies, TORCH; ass'd with cardiac/GI
issues/renal issues
single MVP < 2 cm or AFI < 5 at term (less than 5%ile);
associated with FGR, placental abnormalities, urinary
Oligohydramnios
tract abnormalities, post-term pregnancies, ruptured
or idiopathic membranes
US transducer, depicts valve closure; uses
Doppler
autocorrelation
successive US waveforms at many points; current
Autocorrelation technology which is more accurate at detecting FHR
variability; controls artifact sound waves
detects change in contour with contractions; place at
Toco/tocotransducer fundus or at area of maximum palpation; difficult to
measure with obesity, polyhydramnios
R-R waves; still has issues with artifact; risk of injury,
Fetal scalp electrode
measuring maternal HR in instance of fetal demise;
measures
rupture and dilation required
, solid>fluid filled tips, measures mmHg and allows
IUPC amnioinfusion; issue with displacement, perforation,
placental abruption
goal is baseline 110-160, +/-accels, no decels; if
Intermittent auscultation present, put on continuous monitor min 20 minutes);
cannot determine variability or types of FHR decels
Active phase auscultation q15 min for high risk up to q30min
Second stage auscultation q5 min if high risk up to q15min
auscultate after a contraction x 30-60 seconds;
Fetal tolerance of labor
document rate, rhythm, accels, decels
doppler uses autocorrelation and detects valve
Doppler vs. fetoscope closure; fetoscope listens through opening in heart
wall?
confusing maternal and fetal heart rate; common with
repositioning, fetal movement, during pushing
Signal ambiguity (maternal tachycardia); can occur even with fetal
demise due to FSE recording maternal blood flow
through the placenta
when there is lower baseline or >50% contractions
Suspect signal ambiguity with accelerations (especially with pushing); verify and
document maternal heart rate via pulse oximetry
Halving occurs if FHR >180-200; may double if rate
Halving/doubling
<50
maternal oxygenation, uterine blood flow, placenta
Extrinsic factors exchange, umbilical blood flow; intrinsic factors = fetal
circulation, oxygenation of tissues, FHR regulation
Primary source of oxygen the maternal respiratory system
for the feus
60ml/min non-pregnant vs. 500-1000ml/min; 10-15%
Uterine blood flow
maternal cardiac output
