BR- OB Basics

Question 1

Components of BPS

Answer 1

1 nonstress test

2. Fetal breathing
3. Fetal movement
4. Fetal tone
5. Amniotic fluid volume

Question 2

Define acceleration in 32 weeks and above

Answer 2

> 15bpm from baseline, lasts 15 secs, but <2mins from onset to return

Question 3

Define acceleration for less than 32 weeks

Answer 3

> = 10 bpm from baseline, lasts 10 secs, but < 2 mins from onset to return

Question 4

Define prolonged acceleration

Answer 4

Acceleration lasts > 2mins but < 10 mins duration

Question 5

Define a baseline change

Answer 5

Acceleartaion lasts 10 mins or more

Question 6

Significance of Early Deceleratino

Answer 6

Fetal head compression

SEQUENCE:

1. Uterine contraction
2. Fetal head compression
3. Inc ICP
4. Stimultaino of vagal nerve
5. Dec HR

Question 7

Sig of late decel1

Answer 7

Uteroplacental insufficiency

Uterine contraction —> dec U-P O2 transfer -> chemoreceptorstimulus —> stimulation of vagal nerve —> dec FHR

Question 8

Sig of variable decel

Answer 8

Umbilical cord occlusion

Question 9

Resuscitative interventions for Cat II/III tracings

Answer 9

1. Initial lateral decubitus positioning
2. Administer maternal oxygen
3. Administer IV fluid bolus
4. Discontinue oxytocin or prostaglandins
5. Tocolytics, eg terbutaline, MgSO4