Antenatal Development
Gestational age = age from last menstral period (ie LMP = 0+0)
Embryonic age = age from fertilisation (add 14d to IVF to get gestational age)
Preconception
Gestational age
Antenatal/prenatal = fertilisation to birth
1st trimester (0-12+6w), 2nd (13-25+6w) 3rd (26+)
Embryo = fertilisation to 9+6
Foetus = 10+0 to birth
Antepartum = from viability to labor (relating to mother)
Intrapartum = stage 1 (0-10cm), Stage 2 (10cm to birth), Stage 3 (birth to placenta)
Term = 37/41+6
EDD = first day of LMP + 40 weeks (280days)
Congenital = present at birth
Neonatal = 0-28 days
Postpartum/Puerperium = delivery of placental to 6w (return to prepregnant state)
Perinatal = antepartum + neonatal (22+0 - 7 days old for WHO perinatal mortality)
Corrected age (some advocate for 2years others for 10 x the number of weeks prem)
Use corrected age for:
vitals
anthropometry
development
Chronological age
Birthdays
Immunisations
Miscarriage (aka Spon Abortion) is in utero death <20w (20% of know pregnancies, further ?10% unknown)
Stillbirth is in utero death >20w
TOP: legal <14w in all states, variable thereafter
50% survival at 24 weeks
PROM (premature rupture of membranes): ROM prior to labour
Embryonic age = age from fertilisation (add 14d to IVF to get gestational age)
Preconception
Gestational age
Antenatal/prenatal = fertilisation to birth
1st trimester (0-12+6w), 2nd (13-25+6w) 3rd (26+)
Embryo = fertilisation to 9+6
Foetus = 10+0 to birth
Antepartum = from viability to labor (relating to mother)
Intrapartum = stage 1 (0-10cm), Stage 2 (10cm to birth), Stage 3 (birth to placenta)
Term = 37/41+6
EDD = first day of LMP + 40 weeks (280days)
Congenital = present at birth
Neonatal = 0-28 days
Postpartum/Puerperium = delivery of placental to 6w (return to prepregnant state)
Perinatal = antepartum + neonatal (22+0 - 7 days old for WHO perinatal mortality)
Corrected age (some advocate for 2years others for 10 x the number of weeks prem)
Use corrected age for:
vitals
anthropometry
development
Chronological age
Birthdays
Immunisations
Miscarriage (aka Spon Abortion) is in utero death <20w (20% of know pregnancies, further ?10% unknown)
Stillbirth is in utero death >20w
TOP: legal <14w in all states, variable thereafter
50% survival at 24 weeks
PROM (premature rupture of membranes): ROM prior to labour