Prolonged Labour

Prolonged Labour
The term ‘prolonged labour’ is used when delivery does not take place after 12 hours of established labour
(Baird 1952, Myles 1999). Different terms are used for prolonged labour at different times or for different
reasons.
Prolonged Latent Stage

The latent phase lasts from the onset of labour to three centimetre dilatation of the cervical os. If this
phase takes more than 20 hours in a primigravida and more than14 hours in a multigravida, it is
considered prolonged. In practice diagnosis should be suspected and treatment instituted many hours
before this time interval has elapsed.
Prolonged second stage: -Primigravida – 2nd stage labour more than 2hrs multigravida – more
than 1hr
Primary Dysfunctional Labour

This is when active phase of labour is slow and the cervix dilates at less than one centimetre per hour.
Secondary Arrest
This is when there is slow cervical dilatation in the active phase after normal progress in early labour.
There are numerous causes of prolonged labour at each stage.
Causes of Prolonged First Stage of Labour (4 Ps)

 Poor uterine contractions, leading to the cervix dilating slowly or not at all
 Pelvic abnormalities (passage), where contracted pelvis and tumours of the pelvis cause poor
progress in labour
 The foetus (passenger) is a large baby, or there is malposition or malpresentation, which prevent
the descent of the foetus, for example, occipito-posterior position or shoulder presentation
 Psychological causes, for instance; tension and fear of the unknown tend to prolong labour, most
commonly in women who are primigravidae
Casues of Prolonged Second Stage of Labour

 Secondary hypotonic contractions may cause a delay
 Poor maternal effort, which could be due to fear, exhaustion or lack of sensation due to epidural
block, which may inhibit the woman’s ability to bear down
 A rigid perineum, which may prevent the advance of the foetus. During the perineal phase, an
episiotomy should be performed at the height a contraction
 Reduced pelvic outlet, as in the android pelvis, which narrows at the outlet due to its prominent
ischial spines and narrowed sub-pubic arch
 A large foetus, malposition or malpresentation, leading to a large presenting diameter, accounting
for the delay
Remember: You should reassure the mother at all times during labour.
Diagnosis of Prolonged Labour

Now that you have seen the possible causes of prolonged labour, you will now focus on the diagnosis of
prolonged labour. The following methods may be used to diagnose prolonged labour:
 Proper history of labour including type, duration and frequency of uterine contractions
 Examination of the mother, checking for general appearance, whether distressed or
exhausted
 Check the temperature and pulse as an increase of either of them would be significant
 Urinalysis, where concentrated urine suggests fluid imbalance and dehydration. Check for ketones
in the urine, the presence of this must be corrected at once
 It is important to identify the cause in order to decide the course of action.
Management of prolonged labour involves management as in normal labour but with some additional steps.
Additional Steps Required in the Management of Prolonged Labour
 When progress of labour is delayed due to poor uterine contractions, syntocinon drip must be put
up. If there is no progress in spite of good uterine contraction, labour should be terminated by
caesarean section
 Assist the mother to adopt a comfortable position
 Start an intravenous infusion to correct dehydration and ketosis, for example, Ringer’s lactate
solution or 5% dextrose
 Encourage the mother to empty her bladder every two hours and test the urine for ketones to
exclude maternal distress
 Maintain a fluid input and output chart
 Allow sips of water if absolutely necessary even in anticipation of
general anaesthesia
 Give oral ranitidine (zantac) 15mg every six hours to reduce gastric secretions
 Give broad-spectrum antibiotic if membranes rupture early (within 24 hours)
 Observe and record every two to four hours temperature, pulse, respiration and blood pressure
 Contractions should be recorded every 15 to 30 minutes and take care of the bladder every two
hours
Foetal Condition in Prolonged Labour

The following steps should be taken to monitor the foetal condition:
 Monitor the foetal heart continuously every quarter to
half hour.
 Observe the amniotic fluid for presence of meconium to rule out foetal distress.
 For secondary hypotonic uterine contraction, commence an intravenous infusion of syntocinon with
10% dextrose to stimulate adequate contractions
 Ensure that the presenting part is visible before encouraging the mother to push.
 Perform an episiotomy under local anaesthesia or at the height of a contraction if the perineum is
rigid.
 If the cause was obstruction at the outlet as in android pelvis, and the head is arrested mid pelvis
resulting to foetal distress, caesarean section is recommended.
Complications of Prolonged Labour

There are a number of complications, which may be experienced by both the mother and the foetus during
a prolonged labour.
Maternal complications
 Oedema of the pelvic floor due to the pressure of the presenting part on the pelvic floor and the
vaginal walls
 Retention of urine due to continuous compression of the urethra by the presenting part causing
bruising which might persist during puerperium
 Ruptured uterus due to overstretching of the lower uterine segment
 Deep perineal tears due to overstretching of the perineum, leading to cystocele or rectocele
 The overstretching of the pelvic floor and uterine ligaments may also cause uterine prolapse
 Stress incontinence
Foetal complications
 Intra cranial damage due to excessive moulding
 Foetal hypoxia, which will lead to asphyxia
 Intra cranial haemorrhage due to prolonged compression of the head, and difficult
instrumental delivery
Prevention of Prolonged Labour

Good prenatal care is essential to prevent prolonged labour.
This includes:
 Taking a proper history in relation to cases of previous difficult deliveries
 Detection of malpresentation and malposition
 Any sign of contracted pelvis should be referred to the obstetrician in time to make a timely decision
on the mode
of delivery
During labour you should take the following steps:

 Maintain proper partograph of the mother in labour and take early decision
 Ensure proper control of the syntocinon drip
 Ensure bladder is emptied every two hours to avoid delay of labour

Prolonged Labour

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Prolonged Labour

Prolonged Latent Stage

Primary Dysfunctional Labour

Causes of Prolonged First Stage of Labour (4 Ps)

Casues of Prolonged Second Stage of Labour

Diagnosis of Prolonged Labour

Foetal Condition in Prolonged Labour

Complications of Prolonged Labour

Prevention of Prolonged Labour

During labour you should take the following steps:

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