This topic will make easy to understand normal labour and physiology behind normal labour to all medical students..Hopefully it would be beneficial to all dear students..
The second stage of labor begins when the cervix is completely dilated (open), and ends with the birth of your baby. Contractions push the baby down the birth canal, and you may feel intense pressure, similar to an urge to have a bowel movement. Your health care provider may ask you to push with each contraction.
When fetal head is delivered, but shoulders are stuck and cannot be delivered it is known as shoulder dystocia.
The anterior shoulder becomes trapped behind on the symphysis pubis, whilst the posterior shoulder may be in the hollow of the sacrum or high above the sacral promontory.
Puerperium is the period following childbirth during which the body tissues, specially the pelvic organs revert back approximately to the pre-pregnant state both anatomically and physiologically. puerperium begins as soon as the placenta is expelled and lasts for approximately 6 weeks when the uterus becomes regressed almost to the non-pregnant size.
a detail study on normal labour ( definition, stages of labour, management ,p...martinshaji
The World Health Organization (WHO) defines normal birth as follows: The birth is spontaneous in onset and low risk at the start of labor and remains so throughout labor and delivery. The infant is born spontaneously in the vertex position between 37 and 42 weeks of pregnancy. this is study on detailed study on physiology and stages of normal labour .
please comment
thank u
This presentation contains :-
1.Introduction of normal labour
2. Definiation of normal labour
3.Criteria of normal labour
4. Physiology of normal labour
5. Pathophysiology of labor
6.Estrogen
7. Prostaglandin
8. Oxytocin
9. True labor and false labor difference
10. Uterine contraction in labor
11. Stages of labour
12. Management of 1 st stage
13. management of 2 nd stage
14. mamagement of 3 rd stage of labor
15. Cervix dilation
16. Friedman's curve
17. Fetal skull
18. Diameter of fetal skull
19. Sutures in fetal head
20. Moulding
21. Mechanism of labour
The second stage of labor begins when the cervix is completely dilated (open), and ends with the birth of your baby. Contractions push the baby down the birth canal, and you may feel intense pressure, similar to an urge to have a bowel movement. Your health care provider may ask you to push with each contraction.
When fetal head is delivered, but shoulders are stuck and cannot be delivered it is known as shoulder dystocia.
The anterior shoulder becomes trapped behind on the symphysis pubis, whilst the posterior shoulder may be in the hollow of the sacrum or high above the sacral promontory.
Puerperium is the period following childbirth during which the body tissues, specially the pelvic organs revert back approximately to the pre-pregnant state both anatomically and physiologically. puerperium begins as soon as the placenta is expelled and lasts for approximately 6 weeks when the uterus becomes regressed almost to the non-pregnant size.
a detail study on normal labour ( definition, stages of labour, management ,p...martinshaji
The World Health Organization (WHO) defines normal birth as follows: The birth is spontaneous in onset and low risk at the start of labor and remains so throughout labor and delivery. The infant is born spontaneously in the vertex position between 37 and 42 weeks of pregnancy. this is study on detailed study on physiology and stages of normal labour .
please comment
thank u
This presentation contains :-
1.Introduction of normal labour
2. Definiation of normal labour
3.Criteria of normal labour
4. Physiology of normal labour
5. Pathophysiology of labor
6.Estrogen
7. Prostaglandin
8. Oxytocin
9. True labor and false labor difference
10. Uterine contraction in labor
11. Stages of labour
12. Management of 1 st stage
13. management of 2 nd stage
14. mamagement of 3 rd stage of labor
15. Cervix dilation
16. Friedman's curve
17. Fetal skull
18. Diameter of fetal skull
19. Sutures in fetal head
20. Moulding
21. Mechanism of labour
physiology of labor includes the contraction and retraction of the muscles of uterus. I hope this presentation will help the persons of concerned subject.
Series of events that take place in the genital organs in an effort to expel the viable products of conception out of the womb through the vagina into the outer world is called LABOR.
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Childbirth, labour, delivery, birth, partus, or parturition is the culmination of a pregnancy period with the expulsion of one or more newborn infants from a woman's uterus. The process of normal childbirth is categorized in three stages of labour: the shortening and dilation of the cervix, descent and birth of the infant, and birth of the placenta.
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It explains the mechanism of normal labour to medical and para-medical staff.It also puts light on principle movements underlying mechanism of normal labour with pictures.Thank You Like an share it to the maximum.
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2. INTRODUCTION
Labor is a physiologic process during which the
products of conception (ie, the fetus,
membranes, umbilical cord, and placenta) are
expelled outside of the uterus.
3. DEFINITION OF NORMAL LABOUR
Series of events that take place in the genital
organ in an effort to expel the viable(alive)
products of conception out of the womb/uterus
through vagina into outer world is called
Normal Labour.
4. DEFINITION OF NORMAL LABOUR
Labour is defined as the presence of regular
uterine contractions with progressive cervical
dilatation and effacement.
5. CRITERIA/CHARACTERISTICS OF
NORMAL LABOUR
1. Spontaneous in onset and at term ( between 37
-40 weeks of gestation.)
2. With Vertex presentation
3. Without any undue prolongation.
4. Without any complications.
5. Naturally Terminated with minimal aid.
6. PHYSIOLOGY OF NORMAL LABOUR
Physiology of normal labour complete into two
steps -
UTERINE
CONTRACTION
RETRACTION
7. PHYSIOLOGY OF NORMAL LABOUR
1. Uterine contraction :
During contraction, uterus becomes hard and
somewhat pushed anteriorly to make the long axis
of the uterus in the line with that of pelvic axis.
8. PHYSIOLOGY OF NORMAL LABOUR
1. Uterine contraction :
Simultaneously, the patient experiences pain which
is situated more on the
hypogastric region, often radiating to the thighs.
9. PHYSIOLOGY OF NORMAL LABOUR
1. Uterine contraction :
Probable cause of pain are –
a) Myometrial hypoxia during contractions.
b) Stretching of the peritoneum over the fundus.
c) Stretching of the cervix during dilatation.
d) Compression of the nerve ganglion.
The pain of uterine contractions is distributed along the
cutaneous nerve distribution of T10 to L1.
12. PHYSIOLOGY OF NORMAL LABOUR
INTENSITY –
The intensity of uterine contractions describes the
degree of uterine
systole.
The intensity gradually increases with advancement
of labour until it
becomes maximum in the second stage during
delivery of the baby.
Intrauterine pressure is raised to 40-50 mm Hg
during first stage and about 100-120 mm Hg in the
second stage of labour during contractions.
14. PHYSIOLOGY OF NORMAL LABOUR
DURATION
In the first stage, the contractions last
for about 30 second initially but
gradually increases in duration with
the progress of labour.
Thus in the second stage,
the contractions last longer than in the
first stage.
15. PHYSIOLOGY OF NORMAL LABOUR
FREQUENCY
In the early stage of labour, the
contractions come at intervals of ten to
fifteen minutes.
The intervals gradually shorten with
advancement of labour until in
the second stage, when it comes every
two or three minutes.
19. PHYSIOLOGY OF NORMAL LABOUR
Unlike any other muscle of the body,
the uterine muscles
have this property to become
shortened once and for all.
20. PHYSIOLOGY OF NORMAL LABOUR
Contraction is a temporary
reduction in length of the fibers, which
attain their full length during relaxation.
In contrast,
retraction results in permanent shortening
and the fibers are shortened once and for
all.
21. PHYSIOLOGY OF NORMAL LABOUR
The net effect of retracton on normal
labour are:- -
Essential property in the formation
of lower uterine segment and
dilatation and
effacement up of the cervix.
23. PHYSIOLOGY OF NORMAL LABOUR
To maintain the advancement of the presenting
part made by the uterine contractions and to
help in ultimate expulsion of the fetus.
To reduce the surface area of the uterus
favouring separation of placenta.
Effective haemostasis after the separation of the
placenta.