Definitions And Epidemiology ✅ Flashcards
How is a babys due date traditionally calculated?
Asking the mother about the first day of the last menstrual period, and relying on this
When is a baby’s due date not based on the mothers LMP?
When there is a discrepancy with USS dates of more than 10 days
What do some think should be used to determine a babies due to?
USS biometry alone, when available
What is the problem with the potential difficulties in accurately determining gestational age?
Obtaining accurate data relating to stillbirths and mortality/survival rates in extremely preterm infants is difficult
Why is comparing data on stillbirths/extremely preterm infants from different countries difficult?
Due to variation in legislation, regulation, and practices of registration of stillbirth, live birth, and death
In what respects is there wide variation between different countries with regard to stillbirths?
Gestational age at which fetal deaths are registered as stillbirths (which influences decision whether extremely preterm births are registered as live birth or miscarriage)
How is gestational age in completed weeks calculated?
From the first day of the last menstrual period to the date of birth
What is a neonate defined as?
Infant 28 days or younger
What is preterm defined as?
Gestation <37 weeks of pregnancy
What is preterm often subclassified into?
- Extreme preterm
- Very preterm
- Moderate preterm
- Late preterm
What is considered to be extreme preterm?
<28 weeks
What is considered to be very preterm?
28-31 weeks
What is considered to be moderate preterm?
32-33 weeks
What is considered to be late preterm?
34-36 weeks
What is considered a term pregnancy?
37-41 weeks
