Fetal conditions - Amniotic fluid Flashcards
1
Q
Source of amniotic fluid
- Early pregnancy
- 2nd trimester
- > 20 weeks
A
- Early pregnancy
- Maternal plasma as ultrafiltrate
- 2nd trimester
- ECF diffuse through fetal skin
- > 20 weeks
- Fetal urine
Memory aid:
-
The PEK provides amniotic fluid
- Plasma
- ECF
- Kidney
2
Q
Normal volume
- By week 12
- By week 34-36
- By term
- By 42 weeks
A
- By week 12
- 60 mL
- By week 34-36
- 1L
- By term
- 840 mL
- By 42 weeks
- 540 mL
3
Q
Mechanisms in the removal and regulation of amniotic fluid volume
A
- Fetal swallowing
- Fetal aspiration
- Exchange through skin and fetal membrane
