Cum se calculează Gestational Age
Ce este Gestational Age?
Gestational age is pregnancy duration from last menstrual period. It's critical for fetal development assessment and delivery timing.
Ghid pas cu pas
- 1Naegele's rule: Add 7 days to LMP, then add 9 months
- 2Or: LMP + 280 days ≈ EDC
- 3Verify with first-trimester ultrasound for accuracy
Exemple rezolvate
Intrare
LMP January 1
Rezultat
EDC ≈ October 8 (280 days later)
Average pregnancy duration
Greșeli frecvente de evitat
- ✕Using conception date instead of LMP
- ✕Ignoring ultrasound confirmation of dates
Întrebări frecvente
Why measure gestational age precisely?
Guides timing for pregnancy care, delivery decisions, neonatal viability judgments.
Is Naegele's rule always accurate?
Accurate ±2 weeks for first trimester dating. Less accurate with irregular cycles or uncertain LMP.
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