A very brief introduction of normal labour

2. 1) Definition of normal labour
2) Assesment criteria for the same
3) Causes of labour initiation
4) Stages of labour
5) Key words in labour mechanism

3.  Definition –
A series of events that takes place in the
genital organs in order to expel the viable
products of conception out of the womb through
the vagina into the outer world .

4.  Spontaneous in onset and at term
 Vertex presentation
 Without undue prolongation
 Natural termination with minimal aids
 Without any complications

5.  Uterine distention
 Feto placental cascade
 Oestrogen
 Progesteron
 PG’s
 Oxytocin

6. 1st : onset of true labour pain to full
cervical dilatation .
2nd : full cervical dilatation to fetal
expulsion
3rd : placental expulsion
4th : observation

7. 1st STAGE 2nd STAGE 3rd STAGE
PRIMI 12 HRS 2 HRS 15 MIN
MULTI 6 HRS 30 MIN 15 MIN

8. Engagement
Increasing flexion
Int. rotation of occiput
Crowning
Delivery of head by extention
Restitution
External rotation
Delivery of shoulders and trunk by lateral flexion

9.  Power
 Passage
 Passenger

10. 1) Pains
2) Dilatation and effacement of cervix
3) Status of membranes
4) Descent of fetus
5) Vaginal signs
6) Maternal signs and foetal effect

11. THANK YOU