The<unk>  has 5 components: 4 ultrasound (US) assessments and an NST. The NST evaluates fetal heart rate and response to fetal movement. The five discrete<unk>  variables: # Fetal heart rate # Fetal breathing # Fetal movement # Fetal tone # Amniotic fluid volume Parameter Normal (2 points) Abnormal (0 points) NST/Reactive FHR At least two accelerations in 20 minutes Less than two accelerations to satisfy the test in 20 minutes US: Fetal breathing movements At least one episode of > 30s or >20s in 30 minutes None or less than 30s or 20s US: Fetal activity / gross body movements At least three discrete body/limb movement in 30 minutes (episodes of active continuous movement considered a single movement. Less than three or two movements US: Fetal muscle tone At least one episode of active extension with return to flexion of fetal limb(s) or trunk, opening and closing of hand considered to be normal tone. Either slow extension with return to partial flexion or movement of limb in full extension or absent fetal movement. US: Qualitative AFV/AFI At least one vertical pocket > 2 cm in the vertical axis or AFI of 5 cm Largest vertical pocket </= 2 cm, or AFI </= 5 cm Use of vibroacoustic stimulation to accelerate evaluation has been described.
Biophysical profile
Evocative/suppression testing
Syndromic testing
Biotelemetry
Neuromuscular monitoring
Clinical neurophysiology
Evoked field
Functional imaging