Women's health - Labour + delivery + postpartum Flashcards
What are the stages of labour?
- First stage - until fully dilated (10cm)
- Second stage - full dilation until delivery
- Third stage - delivery of baby until delivery of placenta
What is stage 1 of labour divided into and what are the criteria (2)?
- Latent = 0-3/4 cm dilated
- Active(established labour) = 3/4-10 cm dilated
What are the 4 signs of the start of labour?
- Regular painful contractions
- Show (mucous plug from cervix)
- ROM
- Dilating + thinning (effacement) cervix
What is stage 2 of labour divided into?
- Passive stage - head descends down pelvis
- Active phase - mother bears down
How long should the first two stages of labour last in a primigravida women?
- Latent stage 1 = less than 20 hours
- Active stage 1(established labour) = 1 cm/hour
- 2nd stage = 2 hours
How long should the first two stages of labour last in a multigravida women?
- Latent stage 1 = less than 14 hours
- Active stage 1 (established labour) = 1.5 cm/hour
- 2nd stage = 1 hour
How long should 3rd stage last?
30 minutes
What is important to give to some mothers during labour (not to do with progression or pain management) (2)?
- IV benzylpenicillin (if GBS infection)
- Anti-D Ig
What are contractions in the 2nd/ 3rd trimesters that do not progress to labour known as?
Braxton-hicks contractions
What influences the progression of labour (3)?
Three Ps
* Power - uterine contractions
* Passenger - size, presentation
* Passage - shape + size of pelvis/ soft tissues
What are the seven stages of the mechanism of delivery?
- Descent - head moves down pelvis
- Flexion - chin to chest
- Internal rotation - to occipital-anterior position
- Extension - of head to push through vagina
- Restitution - occiput re-aligns with shoulders
- External rotation - shoulders rotate to anterior-posterior position (perpendicular to mothers)
- Delivery of shoulders - anterior shoulder delivered, then posterior
What is involved in an initial assessment of a woman in labour (4)?
- History
- Obs + urinalysis
- Abdominal palpation - lie, contractions, engagement, ect
- Vaginal exam
What is the standard monitoring performed during labour (5)?
- Foetal HB (every 15 min)
- Contractions (every 30 min)
- Maternal pulse + BP
- Vaginal exam (every 4 hours)
- Urine dip (every 4 hours)
What is recorded on a partogram (lots of things)?
- Progress - dilation, descent, contractions
- Foetal wellbeing - CTG, amniotic fluid colour
- Maternal wellbeing - pulse, BP, temp, urinalysis
What does CTG stand for?
Cardiotocography
What are some indications for CTG (3)?
- Unwell mother (tachycardia, sepsis, bleeding)
- Delay in labour
- Use of oxytocin
What is monitored on a CTG (2)?
- Foetal heartbeat
- Uterine contractions
What are 4 reassuring features of a CTG?
- Rate = 110-160
- Decelerations = absent
- Accelerations = present
- Baseline variability = 5-25 bpm
What is an acceleration/ deceleration on a CTG?
Increase/ decrease of 15 bpm for 15 seconds
What are the types of deceleration and what do they mean? (4)
- Early (heart rate drops in time with peak of contraction) = innocent finding associated with compression of foetal head
- Late (HR drops after peak of contraction) = foetal distress e.g. hypoxia
- Variable (<2 min) = transient umbilical cord compression
- **Prolonged ** (2-10 min) = compression of umbilical cord
What is the most common cause of reduced foetal HB variability (<5)?
Sleeping foetus
How can foetal distress be further investigated, after a CTG has been done, during labour?
Foetal scalp sample
can indicate hypoxia
What are some non-pharmacological options for pain relief during labour (3)?
- Birthing pool
- Relaxation techniques
- Aromotherapy
What are some medical options for pain relief during labour (4)?
- Paracetamol/ codeine
- Entonox (gas + air = 50/50 NO and O)
- IM opioids (e.g. diamorphine)
- Epidural
Where is an epidural carried out?
L3-4 epidural space (acts on nerve roots)
What medication is used in an epidural?
Bupivacaine + fentanyl
What are some adverse effects of an epidural (6)?
- Hypotension
- Motor weakness
- Nerve damage
- Prolonged second stage + increased likelihood of instrumental delivery
- Headache after insertion
- Urine retention
What score can be used to determine whether to induce labour?
Bishop score
What are the criteria included in the bishop score (5)?
- Consistency (cervix)
- Dilation
- Effacement
- Foetal station (how much engaged)
-
Position (cervix)
CEDFP
What do different bishop scores mean (3)?
- 1-5 = unripe, inaction needed
- 6-7 = intermediate
- 8-13 = ripe, likely to spontaneously deliver
What are ways to induce labour (5)?
- Membrane sweep
- Vaginal prostaglandin E2/ misoprostol (oral prostaglandin E1)
- Amniotomy (breaking waters)
- Balloon catheter
- Oxytocin infusion
When is a membrane sweep typically performed?
41 week antenatal visit
nulliparous also at 40w
How should a bishop score of 1-6 be managed (2)?
- Vaginal prostaglandins
or - Oral misoprostol
How should a bishop score of 7-13 be managed (2)?
- Amniotomy
and - IV oxytocin (e.g. syntocinon)
What are some infections for induction of labour (4)?
- Prolonged labour
- Prolonged pregnancy
- PPROM
- Maternal GDM, pre-eclampsia, obstetric cholestasis
What is the main complication of induction of labour?
Uterine hyperstimulation:
* Foetal ischemia
* Uterine rupture
What are the categories of c-sections?
- Immediate threat to life - deliver within 30 min
- Not an imminent threat to life - deliver within 75 min
- Mother and baby are stable - deliver soon
- Elective c-section
What are some indications for an elective c-section (6)?
- Previous c-section (2 c-section = contraindication for vaginal)
- Placenta praevia
- Vasa praevia
- Breech
- Multiple pregnancy
- Herpes/ HIV
How is a c-section performed (2)?
- Joel-cohen incision = straight transverse incision
- Classical incision = midline
What are the layers of the abdomen that need to be directed for a c-section (7)?
- Skin
- Subcutaneous tissue
- Rectus sheaf/ fascia
- Rectus abdominis
- Peritoneum
- Uterus
- Amniotic sac
What are some complications of c-sections (3)?
- VBAC (vaginal birth after c-section) –> uterine rupture
- PPH
- Endometritis
What risk is associated with classical c-section incision?
Uterine rupture if vaginal birth after c-section (VBAC)
What are the two instrumental deliveries?
- Ventouse delivery
- Forceps delivery
What are some complications of ventouse delivery for the foetus (3)?
- Caput succedaneum
- Cephalohaematoma
- Subgaleal haematoma (even worse)
What is a complication of a forceps delivery for the foetus?
CN 7 palsy (facial paralysis)
What are some indications for instrumental delivery (3)?
- Failure to progress
- Foetal distress
- Maternal exhaustion
What is a key risk factor for needing an instrumental delivery?
Epidural
What are some risks to the mother from an instrumental delivery (4)?
- PPH
- Perineal tears
- Incontinence
- Nerve injury
What is PPROM vs PROM (2)?
- Preterm premature ROM = before 37 weeks and not directly preceding labour
- Premature ROM = not directly preceding labour but after 37 weeks
What are two prophylactic options for the prevention of preterm labour (2)?
- Vaginal progesterone
- Tocolytics (reduce uterine contractions)
- Cervical cerclage (stitch in cervix)
can be offered when cervical length is short on USS
What are some causes of PPROM (5)?
- TORCH infections
- Trauma
- CVS/ amniocentesis
- BV
- LLETZ
How can PPROM be investigated if there is doubt over whether the membranes have ruptured (3)?
- Sterile speculum = fluid pooled in posterior fornix
- USS = oligohydramnios
- IGF-1/ PAMG-1 tests
How should PPROM be managed (3)?
- Erythromycin for 10 days
- Steroids + MgSO4
- Induction (from 34 weeks)
What is cord prolapse?
When the umbilical cord presents before the foetus
What are some risk factors for cord prolapse (4)?
- Abnormal foetal lie
- Polyhydramnios
- ARM (artificial rupture of membranes)
- Multiple pregnancies
What are the signs/ symptoms of prolapsed cord (3)?
- Foetal bradycardia
- Visible cord
- Felt on vaginal exam
speculum exam can confirm
How is a cord prolapse managed (2)?
- Immediate c-section
- Go on all 4s + catheterise (reduces pressure on cord)
What medications can be used to manage cord prolapse?
Tocolytics e.g. terbutaline
minimise contractions
What are some compilations of a cord prolapse (2)?
- Foetal ischemia
- Nuchal cord (wraps around babies neck)
What are the types of breech presentation (3)?
- Complete = flexed at hips and knees
- Frank = flexed at hips, extended at knees
- Footling = 1 foot hangs down
What can be used to treat breech presentations?
External cephalic version
When is external cephalic version done?
37 weeks
can do at 36 weeks if first time
What are some risk factor for breech presentation in labour (2)?
- Polyhydramnios
- Prematurity
What are some risks associated with breech position (3)?
- DDH
- Hypoxic ischemic encephalopathy
- Uterine rupture
What are the ways the “position” of a foetus is described in the womb (5)?
- Lie
- Presentation
- Position
- Attitude
- Station
What are the 3 types of lie of a foetus?
- Longitudinal (parallel to mothers spine)
- Transverse (perpendicular to mothers spine)
- Oblique (diagonal)
What are the 3 presentations of a foetus?
- Cephalic (head)
- Breech (bum/ feet)
- Shoulder
How is the position of the presenting part described (2)?
- Right/ left
- Anterior/ posterior
in relation to occiput/ sacrum of foetus
How is the attitude of the foetus described (2)?
- Flexed
- Extended
What is the station of the foetus?
How far descended into the pelvis the foetus is (fifths engaged)
What are the types of perineal tears (4)?
- First degree = mucosa
- Second degree = muscle
- Third degree = anal sphincter
- Fourth degree = rectal mucosa
How are perineal tears managed (3)?
- First = northing
- Second = midwife stitch
- Third/ fourth = theatre stitching
What are some risk factors for perineal tears (5)?
- First birth
- Large baby
- Shoulder dystocia
- Instrumental deliveries
- Occipito-posterior lie
What is an obstructed labour?
Mechanical obstruction to the descent of the baby
How can an obstructed labour be treated?
Episiotomy (cut down the perineam and around the anal sphincter)
What can sometimes happen if the babies head is large?
Cephalopelvic disproportion = babies head is too large to fit through the mothers pelvis
What is it known as when the anterior shoulder of the baby gets stuck on the pubic symphysis?
Shoulder dystocia
What is a common cause of shoulder dystocia?
Macrosomia due to GDM
How does shoulder dystocia present?
Head delivers but shoulders then become stuck and won’t come out
How is shoulder dystocia managed (3)?
- McRoberts manoeuvre = flex hips (bring knees to abdomen)
- Pressure to anterior shoulder
- Zavanelli manoeuvre = push babies head into uterus to allow for c-section
What are some complications of shoulder dystocia (4)?
- Foetal hypoxia
- Erbs palsy
- Perineal tears
- PPH
What is Erbs palsy?
Injury to brachial plexus
What is the position of the arm in Erbs palsy?
Internal rotation of the arm with flexion of wrist + hand/ fingers
What are the types of PPH in terms of time frame (2)?
- Primary < 24 hours
- Secondary 24 hours - 6 weeks
What are the severities of PPH (3)?
- Minor 500-1000ml
- Moderate 1000-2000ml
- Severe > 2000ml
c-section > 1000ml = PPH
What are the causes of PPH (4)?
- Tone (decreased pressure on spiral arteries) = mc
- Tissue (retained products)
- Thrombin (DIC)
- Trauma (tears, uterine rupture)
What are some risk factors for PPH (6)?
- Prolonged labour
- Phx c-section
- Polyhydramnios
- Twins
- Fibroids
- Multiparity
How is PPH managed (3)?
- Fundal massage + catheterise
- IV oxytocin
- Intrauterine balloon tamponade + compression sutures
How is retained tissue of conception managed?
Surgical D+C
What are some complications of PPH (3)?
- Sheehans syndrome
- DIC
- Shock –> death
What risk to the mother should be assessed at the time of birth?
VTE risk assessment (more than 4 risk factors = high risk)
How should women at high risk of DVT be managed after giving birth?
LMWH for 6 weeks
What is a common infection that occurs in women after childbirth (especially c-sections)
Endometritis
How does endometritis after pregnancy present (4)?
- Fever (>38)
- Lower abdo pain
- Offensive discharge
- Bleeding
How soon after birth does endometritis usually present?
Within 72 hours
although can present weeks after
What bacteria commonly cause endometritis after pregnancy (2)?
- GBS
- E. coli
other KEEPS bacteria
How is endometritis after pregnancy investigated?
- Blood cultures
- Vaginal swabs
- TVUSS
How should endometritis after pregnancy be managed?
IV clindamycin + gentamicin
What conditions can affect the mental health of women who have recently given birth (3)?
- Baby blue
- Postpartum depression
- Postpartum psychosis
When should baby blues resolve within?
2 weeks of delivery
peaks in first week
How common are baby blues?
More than 50% of women
What are the signs/ symptoms of baby blues (4)?
- Low mood
- Mood swings
- Tearful
- Anxiety
How should baby blues be treated?
No treatment needed
How long should postnatal depression last before being diagnosed?
2 weeks
What are the signs/ symptoms of postnatal depression (3)?
- Anhedonia
- Low mood
- Anergia
same as depression
What criteria can be used to diagnose postnatal depression?
Edinburgh scale
How should postnatal depression be managed (3)?
- Self help
- CBT
- SSRIs (sertraline)
What are the signs/ symptoms of puerperal psychosis (5)?
- Delusions
- Auditory hallucinations
- Severe mood swings
- Thoughts to harm baby
- Depression
How is puerperal psychosis managed (4)?
- Admit to mother + baby ward
- CBT
- Medications
- ECT