NURS 450 Lecture Notes - Lecture 12: Amniotic Fluid, Muscle Tone, Cardiotocography
Document Summary
Assesses fetal heart rate (110-160 is normal) and movement (fetal movement decreases with low oxygen intake) Efm (electronic fetal monitoring: doppler and tocodynamometer. Measures rate and duration of contractions, fetal movement. Non-stress test (after 28 weeks), fetal heart rate: reactive (normal) 2+ fetal heart rate increases in 20 minutes. Rate increases by 15 beats for 15 seconds. Related to fetal movement: non-reactive (abnormal) Biophysical profile: nst plus ultrasound assessment x 30 minutes, usually after 32 weeks, assesses 5 areas of fetal health. Contraction stress test (cst: assesses fetal tolerance of stress, contractions started by iv pictocin or nipple stimulation, try to get 3 uterine contractions within 10- minute period. External monitoring: ultrasound or doppler, tocodynamometer. Internal monitoring: fetal scalp electrode, intrauterine pressure catheter. Advantages: reassuring feedback, evidence of contractions when they can"t be felt with epidural, restricts position and movement, possible infection.
