Definitions in obs lect

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Definitions in obs lect

  1. 1. BASIC TERMS AND CONCEPTS IN OBSTETRICS Dr Farzana Kazmi Assistant Professor DHQ Teaching Hospital Rawalpindi
  2. 2. Calculation of EDD : Naegle’s Rule Add 7 days and 9 months / Add 7 days and subtract 3 months in LMP Total Gestation: Forty weeks 280 days Viability: The ability of fetus to survive in the extra uterine environment after 20 , 24, 28 weeks of gestation or weight > 500 grams
  3. 3.     Term: After complete 36 weeks till complete 41 weeks of gestation Preterm: Before complete 36 weeks Postdate: After EDD or complete 39 weeks till complete 41 weeks Postterm After complete 41 weeks
  4. 4. Estimation of birth weight Low birth weight: ( LBW): Babies who born weighing less than 2,500 grams Very low birth weight: Babies who are born weighing less than 1,500 grams (3 pounds, 4 ounces).
  5. 5. Birth weight chart
  6. 6. ATTITUDE OF FETUS  Relation of various fetal parts to other parts. Normally all joints flexed
  7. 7. Lie of fetus  Relationship of long axis of fetus to the long axis of mother Longitudinal Transverse Oblique /
  8. 8. PRESENTATION OF FETUS  Presenting part Portion of fetus that is presenting against the cervix Pelvic grip Paw like grip
  9. 9. Presentation  Vertex Breech Brow Face Shoulder
  10. 10. ENGAGEMENT When widest part of presenting part has passed successfully through the inlet
  11. 11. ENGAGEMENT OF FETAL HEAD
  12. 12. STATION OF FETAL HEAD  The level of the lowest fetal bony part in relation to imaginary line joining the mother’s ischeal spines
  13. 13. POSITION OF FETAL HEAD   The relationship of fetal skull to maternal pelvis Bony land marks
  14. 14. POSITIONS OF FETAL HEAD

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