Understanding key obstetric definitions is foundational for medical students preparing for exams or clinical practice. This blog covers essential terms related to pregnancy, birth, and neonatal care.
Body
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Pregnancy and Birth
- Abortion: Termination of pregnancy before 20 weeks or fetal weight <500g.
- Birth: Complete expulsion of the fetus at >20 weeks or >500g, regardless of viability.
- Viability: Fetus is viable at >24 weeks or >500g.
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Miscarriages
- Missed Miscarriage: Asymptomatic intrauterine fetal death.
- Threatened Miscarriage: Uterine bleeding without labor.
- Incomplete Miscarriage: Active miscarriage with retained products.
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Neonatal Deaths
- Early Neonatal Death: Within 7 days of birth.
- Late Neonatal Death: Within 4 weeks of birth.
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Important Timelines
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Trimesters:
- T1: 0-12 weeks
- T2: 12-28 weeks
- T3: 28-40 weeks
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Pre-Term, Term, Post-Term:
- Pre-Term: <37 weeks
- Term: 37-42 weeks
- Post-Term: >42 weeks
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Trimesters:
Conclusion
Mastering these definitions ensures clarity in communication and enhances understanding of obstetric care. These notes are essential for MBBS, NEET PG, and USMLE preparation.