Obstetric Definitions: Key Terms Every Medical Student Should Know

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

  1. 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.
  2. Miscarriages

    • Missed Miscarriage: Asymptomatic intrauterine fetal death.
    • Threatened Miscarriage: Uterine bleeding without labor.
    • Incomplete Miscarriage: Active miscarriage with retained products.
  3. Neonatal Deaths

    • Early Neonatal Death: Within 7 days of birth.
    • Late Neonatal Death: Within 4 weeks of birth.
  4. Important Timelines

    • Trimesters:
      • T1: 0-12 weeks
      • T2: 12-28 weeks
      • T3: 28-40 weeks
    • Pre-Term, Term, Post-Term:
      • Pre-Term: <37 weeks
      • Term: 37-42 weeks
      • Post-Term: >42 weeks

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.

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