1. FETUS POSITIONS IN UTERUS II
FETUS POSITIONS IN UTERUS II. 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. Fetal ATTITUDE – the posture of the fetus
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

29. Mechanism of labour in R. O. P
Mechanism of labour in R.O.P.-flexion,engagement,internal rotation,descending,extension,expulsion

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

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

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

33. 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