Clinical- Week 4 Flashcards
what on MUAD, indicates pre-eclampsia risk?
notching
what is variability of fetal heart rate a sign of?
an intact sympathetic nervous system
what facial deformity can benzodiazepines in pregnancy cause?
cleft lip
what scan can you do to predict pre-eclampsia risk?
maternal uterine artery doppler at 20-24 weeks
what is first line therapy for adults with urgency urinary incontinence or mixed urinary incntinene?
bladder training
what score is the best and simplest method available to determine if it is safe to induce labour?
bishop score
uses the 5 cervical parameters
what is a rectocele?
rectum (posterior compartment) has prolapsed out of vagina
what is lochia?
vaginal discharge in the puerperium phase
when does puerperal psychosis present?
within 2 weeks of delivery
describe the different degrees of uterine descent in uterovaginal prolapse?
1st degree- uterus in vagina
2nd degree- at interiotus
3rd degree- outside vagina
procidentia- entirely outside vagina
what types of collagen are present in cervical tissue?
1,2,3,4
what 7 features does the partogram record?
- fetal heart
- amniotic fluid colour
- cervical dilatation
- descent
- contractions
- obtruction (moulding)
- maternal obs
how long does the third stage of labour have to go on for in order to think about removal under GA?
1 hour
what drug, used to accelerate the delivery of the placenta should you avoid in hypertension?
ergometrine
what is tokophobia?
pathological fear of labour
what does oestrogen do to the contractibility of the uterus?
increases it
what is the normal fetal position?
longituinal lie with cephalic presentation with flexed head
occipito-anterior
what is the active management of the third stage of labour?
oxytotic drugs
-syntometerine (ergometrine + oxytocin) or oxytocin
and
-cord clamping and cutting with controlled cord traction
what are the 2 types of placenta previa?
major
minor
what does stretch of the myometrium do to the myometrial fibres?
increases their excitability
how do b3 adrenoreceptor agonists (eg mirabegron) work in the treatment of overactive bladder?
relaxes bladder smooth muscle
what is antepartum haemorrhage?
bleeding in late pregnancy (24 weeks onwards)
why is there commonly malpresentations with placental previa?
reduced space for babies head in lower segment of uterus
what gases make up entonox?
50% oxygen
50% nitrous oxide
what is the normal baseline variability?
greater than 5 beats/min
what can meconium in amniotic fluid indicate?
fetal distress
breech presentation
what is the post-micturation volume of urine in bladder?
shouldnt be above 100ml
normal is age dependent: 10-80ml
what happens to the number of oxytocin receptors in myometrial and decidual tissues near the end of pregnancy?
numbers increase
if the fetus is in transverse lie, what is the presentation of the fetus?
shoulder
what may the uterus feel like in placental abruption?
wooden hard consistency
when can topical oestrogens be used for urinary incontinence?
only if there is atrophic vaginitis
what are the 5 main complications of epidural anaesthesia?
atonic bladder hypotension dural puncture headache back pain
in nulliparous women, how long does the second stage of labour have to continue for to be considered prolonged?
greater than 2 hours (no regional anaesthetic)
greater then 3 hours (with regional anaesthetic)
how long should pelvic floor muscle exercises for stress or mixed urinary incontinence be performed for?
3 months mininum
for ladies who want to be pregnant with bipolar affective disorder who need to remain on an anticonvulsant, what folic acid dose should be given to them pre-conception?
5mg folic acid
how many weeks post-labour does it take for the fundal height to go from umbilicus to within the pelvis?
2 weeks
which is the longest stage of labour?
1st stage
after lifestyle changes, what is the next line therapy for over active bladder?
-antimuscarinic agents
when does placentation occur?
1st 20 weeks of pregnancy
what type of urinary incontinence are pelvic floor muscle exercise effective in?
stress
mixed
what antimuscarinic is the first line drug used in urgency urinary incontinence?
oxybutynin (immediate release)
when do you usually diagnose placenta previa?
at 20 week anomaly scan (then 32/34 scan)
in vertex position, what is the presenting part of the babies head?
occiput
how long does the third stage of labour usually take?
around 10 minutes
up till what week are steroids administered for preterm babies?
36 weeks
how long does the puerperium phase take?
6 weeks
what is placental abruption?
separation of a normally implanted and sited placenta
why does cocaine use increase chance of pre-eclampsia and cause chronic small abruptions?
cocaine is a vasoconstrictor
the cervix is assessed by what 5 parameters?
effacement dilatation firmness (consistency) position level of presenting part
why does recurrent bleeding occur in placenta previa?
placenta doensn’t grow as much as it should to fit with the growing uterus- some of it separates
what are the 2 reasons labour is painful?
transient myometrial hypoxia
stretching of pelvis nerves
what causes cervical softening?
increased hyaluronic acid
what is the treatment for a dural puncture when administering an epidural?
hydrate mother and get a blood patch
describe the third stage of labour?
from delivery of baby to expulsion of placenta and membranes
how long after delivery can pregnancy-indued hypetension last?
6 weeks
what does green liquor indicate?
meconium
is placenta previa painful?
no
what are the 3 types of lochia?
lochia rubra (fresh red) lochia serosa (brownish-red, watery) lochia alba (yellow)
in labour, what equates to the power?
uterine contraction
what is the gold standard surgical treatment of stress urinary incontinence?
low tension vaginal tape (not done in scotland)
ca women on lithium breast feed?
no
what is the main risk factor for placenta accreta?
C section
why do mothers having a VBAC (vaginal birth after C section) have a risk of fetal distress and hypoxia?
contractions of uterus with scarring carries a risk of rupture
why can epidurals inhibit progress in stage 2 of labour?
relaxation of pelvic floor- baby’s head doesnt flex and internally rotate as efficiently
can women on anti-convulsants breast feed?
yes
the release of what from the fetus into the amnitoic fluid stimulates prostaglandin synthesis in preparation for labour?
pulmonary surfactant
what is eclampsia?
tonic-clonic seizure occuring with features of pre-eclampsia
how can strength of uterine contractions be measured?
by abdominal palpation
what does primigravida mean?
first pregnancy
why do mothers with induction/augmentation of labour have a risk of fetal distress and hypoxia?
risk of hyperstimulation
what is considered normal blood loss during labour?
<500mls during delivery
>500mls or blood before delivery is abnormal
how long does bladder retraining have to be done for?
6 weeks minimum
what is urgency?
the sudden compelling desire to pass urine
-fear of incontinence during these episodes
what 3 key factor determine whether labour progesses?
Power
Passage
Passenger
if there has been no bleeding in pregnancy with placenta praevia, when should a C section be carried out?
38/39 weeks
what is mixed urinary incontinence?
involuntary leakage associated with urgency and also with increased abdominal pressure
what hormone initiats and sustains contractions of the uterus?
oxytocin
in labour, what equates to the passenger?
fetus
what classes as adequate uterine contraction during labour?
4 contractions in 10 minutes
what is the expectant management of the third stage of labour?
just wait for spontanoues delivery of the placenta
are anti-psychotics safe in pregnancy and breastfeeding?
yes (except clozapine)
how do you obtain fetal blood sampling?
use a fetoscope into vagina up to babies scalp and make a small incision
what is a cystocele?
bladder (anterior compartment) has prolapsed out of vagina
what hormone can we give to augment uterine contractions?
synthetic oxytocin
at how many weeks should you do a planned C section for placenta accreta?
37 weeks
at what getation does BP start to increase again?
22-24 weeks