Question | Answer |
What is the average volume of amniotic fluid at term | 800 mL |
How is oligohydramnios determined | Identification of the largest pocket of fluid measuring less than 2cmx 2cm or the total of 4 quadrants less than 5 cm |
What is oligohydramnios associated with | SGA fetus, renal tract abnormalities (renal agenesis), and urinary tract dysplasia |
The clinical manifestation of oligohydramnios is a direct result of __ | The impairment of urine flow ot the amniotic fluid in the late part of the first half of pregnancy or during the second and third trimesters |
What is the most common autosomal trisomy and what is the rate | Trisomy 21 (Down syndrome) 1 in 600 live births |
What is the second most common autosomal trisomy and what is the rate | Trisomy 18 (Edward’s syndrome) 1 in 6000-8000 live births |
Turner’s syndrome is associated with an average birthweight of approximately __ below average | 400g |
Fetuses with neural tube defects are frequently | IUGR weighing approximately 250g less than controls |
Partial or complete detachment of placenta from uterine wall, after 20 weeks gestation | Abruptio Placenta |
What are some risk factors of abruptio placenta | Cocaine use, maternal hypertension, trauma |
Placenta previa is __ bleeding | Painless/silent |
Placenta abruption is __ bleeding | painful |
When is amniocentesis performed? | 15-20 weeks for karyotyping (for Down syndrome) |