Tuesday, March 6, 2018

Nonstress test and biophysical profile mnemonic video notes

Video notes

Nonstress test: Measure the heart rate of the fetus in response to its own movements

Very easy to perform using a doppler.

The definition currently recommended by the American College of Obstetricians and Gynecologists and the American Academy of Pediatrics (2007) is:

- Two or more accelerations of FHR
- Occurring within 20 minutes of beginning the test
- Acceleration should peak at 15 bpm or more above baseline
- Should last 15 seconds or more,

Assesses fetal well being.

Accelerations with or without fetal movements be accepted, and that a 40-minute or longer tracing—
to account for fetal sleep cycles—should be performed before concluding that there was insufficient fetal reactivity.

VAS (Vibroacoustic stimualtion): Vibratory sound stimulus to induce FHR accelerations.

Biophysical profile:
Sonography machine and Doppler ultrasound to record fetal heart rate.
Typically, these tests require 30 to 60 minutes of examiner time.

Five biophysical components assessed.

Normal variables are assigned a score of 2 each and abnormal variables, a score of 0.
Thus, the highest score possible for a normal fetus is 10.

Fetal breathing: > 1 episode of rhythmic breathing lasting > 30 sec within 30 min
Amnionic fluid volume: A pocket of amnionic fluid that measures at least 2 cm in two planes perpendicular to each other (2 x 2 cm pocket)
Fetal tone: 1 episode of extremity extension and subsequent return to flexion
Fetal movements: 3 discrete body or limb movements within 30 min
Fetal heart rate acceleration: > 2 accelerations of  > 15 beats/min for > 15 sec within 20–40 min

That's all!



  1. Wow....
    Really thankful to God for u and ur cool med stuff....really helps....keep coming !


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