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FETUS POSITIONS IN UTERUS II. MECHANISM OF LABOUR IN VERTEX PRESENTATION

FETUS POSITIONS IN UTERUS II. MECHANISM OF LABOUR IN VERTEX PRESENTATION. As. Univ. Dr. A.R. Pintilie. Fetus LIE – the relation of the long axis of the fetus to the mother. FLEXION DEFLEXION EXTENSION. Fetal ATTITUDE – the posture of the fetus.

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FETUS POSITIONS IN UTERUS II. MECHANISM OF LABOUR IN VERTEX PRESENTATION

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  1. FETUS POSITIONS IN UTERUSII. MECHANISM OF LABOUR IN VERTEX PRESENTATION As. Univ. Dr. A.R. Pintilie

  2. Fetus LIE – the relation of the long axis of the fetus to the mother

  3. FLEXION DEFLEXION EXTENSION Fetal ATTITUDE – the posture of the fetus

  4. Fetal PRESENTATION - that portion of fetal body that is either foremost within the birth canal or in closest proximity to it. The presenting part can be felt through the dilated cervix only on vaginal examination.

  5. Cephalic presentations • Vertex; B. Sinciput • C. Brow; D: Face

  6. Frank (extended) breech Complete (full) breech Breech presentations

  7. Shoulder presentation

  8. Fetal POSITION – refers to the relation of an arbitrarily chosen portion of the fetal presenting part ( named DENOMINATOR) to an arbitrarily chosen point from the pelvic inlet. Accordingly, with each presentation there may be 8 positions.

  9. Fetal skull

  10. The pelvis is divided into 8 parts (the arbitrarily chosen points) for the purpose of description

  11. Vertex presentation - denominator - occiput

  12. Sinciput presentation - denominator - bregma

  13. Brow presentation - denominator – (root of the) nose

  14. Facial presentation - denominator – (mentum) or chin

  15. Breech presentation – denominator - sacrum

  16. Shoulder presentation – denominator - acromion

  17. Vertex presentation-positions

  18. Labour mechanism in L.O.A.

  19. Uterine contraction – the only active event of labour

  20. The passive processes of labour – The finish of the shape structure of the lower segment

  21. The passive processes of labour: • The dilatation of the cervix • The formation of the forewaters

  22. The passive processes of the labour: Labour mechanism in L.O.A. – the cephalic extremity

  23. Mecanismul de naştere – ANGAJAREA

  24. Mechanism of labour in R.O.P.-flexion,engagement,internalrotation,descending,extension,expulsion

  25. Mechanism of labour in L.O.A.

  26. The first stage of labour (or stage of dilatation) – lasts from the onset of true labour until the cervix is fully dilated

  27. The second stage of labour (or stage of expulsion of the fetus) – lasts from full dilatation of the cervix until the fetus is born

  28. The third stage of labour – lasts from the birth of the child until the placenta and membranes are delivered and the uterus has retracted firmly to compress the uterine blood sinuses

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