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61 Cards in this Set
- Front
- Back
Role of progesterone in labour |
Keeps uterus settled, prevents contractions |
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Role of oestrogen in labour |
Makes uterus contract, prostaglandin production |
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Role of oxytocin in labour |
Initiates and sustains contractions, promotes prostaglandin |
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First stage of labour |
Latent phase - up to 3/4cms dilatation Active phase - 4cms to 10cms (full dilatation) |
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Second stage of labour |
Full dilatation to delivery of baby |
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Third stage of delivery |
Delivery of baby to expulsion of placenta and membranes |
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When is second stage of labour considered prolonged in nulliparous women? |
2 hours Or 3 hours (with regional analgesia) |
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When is the second stage of labour considering prolonged in multiparous women? |
1 hour (2 hours if regional anesthesia) |
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Average duration of third stage of labour? |
10 minutes |
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Braxton hicks contractions |
Tightening of muscles thoughts to aid the body prepare for birth Can start 6 weeks into pregnancy Not usually felt into second or third trimester |
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True labour contractions |
Described as a wave, abdomen hard during contraction |
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What hormone causes real contractions? |
Oxytocin |
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Cervix is made of |
Collagen tissue (types 1, 2, 3, 4), smooth muscle and elastin |
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Normal fetal position |
Longitudinal lie, cephalic presentation |
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Normal blood loss in labour |
Less than 500mls |
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How long for tissues to return to pre-pregnancy state? |
6 weeks |
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What is lochia? |
Vaginal discharge after birth containing blood, muscus and endometrial castings |
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Hormones in puerperium |
Descrease in oestrogen/progesterone Prolactin is maintained |
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Stage 1 failure to progress suspected if |
<2cm dilation in 4 hours |
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Normal fetal scalp pH |
>7.25 If less than 7.2 deliver baby |
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When is anti D test done? |
28 weeks and 34 weeks |
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When is booking visit done? |
8-12 weeks |
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Gestational hypertension description |
New elevated BP at >20 weeks (NO proteinuria) |
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HELLP syndrome |
Haemolysis Elevated Liver enzymes Low Platelet count Can look like preclampsia |
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Hypertensive drugs NOT used in pregnancy |
ACEis/ARBs |
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Hyertensive drugs USED in pregnancy |
Labetalol |
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If maternal BP <130/90 on medication |
Reduce dose of HTN |
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If preeclampsia is present, deliver at |
37 weeks |
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Risk factors for preeclampsia |
Previous preeclampsia First pregnancy New partners Aged over 40 Obesity Multiple pregnancies (twins etc) Little or lots of time between pregnancies |
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Diabetic drugs safe in pregnancy |
Metformin Insulin |
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How does maternal diabetes cause macrosomia? |
Hyperglycaemia causes fetal hyperinsulinaemia |
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Polycythaemia in fetus caused by |
Maternal diabetes |
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Management of DVT/PE in pregnancy |
LMWH |
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Treatment for hypothyroid in pregnancy |
Levothyroxine |
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Treatment for hyperthyroid in pregnancy |
Carbimazole/PTU Propanolol if IUGR |
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Epilepsy medication in pregnancy: |
Pre conception - 5mg folic acid During - continue folic acid. Continue current medication (except phenobarbitone), Vit K from 34 weeks onwards |
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Advice to epileptic mothers |
Shallow baths/unlocked doors incase of fit |
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Bleeding in late pregnancy is considered after What is the other name for this? |
24 weeks Antepartum Haemorrhage (APH) |
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Causes of antepartum haemorrhage |
Placenta previa (20%) Placental abruption (30%) Local causes - polpys/cancer/infection Uterine rupture Vasa previa (rare) 40% there is no cause |
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Causes of placental abruption |
Pre-eclampsia/hypertension Drug abuse/smoking Polyhydraminos/multiple pregnancy Abnormal placenta |
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Bleeding in placental abruption can be |
Concealed by location |
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Signs of placental abruption |
Sudden onset pain Blood Large, hard uterus Difficulty feeling fetal parts |
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What is placenta previa |
Placenta is partially or fully implanted in the lower segment of the uterus |
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Symptoms of placenta previa |
Painless Recurrent bleeding through third trimester Soft, non-tender uterus |
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Diagnosis of: |
Clinical (CTG may be abnormal) Ultrasound (DO NOT PERFORM VAGINAL EXAM TILL PLACENTAL PREVIA IS EXCLUDED) |
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Major placental previa (up to cm near os) requires |
C-section |
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Bleeding in late pregnancy history |
Pain Blood loss Scan History |
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Criteria for antenatal admission |
Bleeding from 23-32 weeks Recurrent bleeding after 28 weeks Any bleeding after 32 weeks Major placenta previa after 36 weeks with no bleeding |
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When should steroids be administered for fetus |
24-48h before delivery |
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When should steroids be administered up to |
36 weeksW |
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What steroid is given for fetus? |
Betamethasone |
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Major postpartum haemorrhage = |
>1500ml |
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PPH treatment |
Uterine massage + 5 units syntocinon stat Then 40 units syntocinon in hartmaans solutionS |
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Surgical treatments for PPH |
Undersuturing Brace sutures Arterial ligation |
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What is placenta accreta and placenta percreta? Risk factors |
Accreta - Placenta invades myometrium Perceta - Placenta invades serosa Placenta previa and previous cesarean section |
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Trend of blood pressure in pregnancy |
Vasodilitation and fall in BP up to 22 weeks |
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Diagnostic criteria for hypertension in pregnancy |
>140/90 on 2 occasions DBP >100 |
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Hypertension before 20 weeks gestation |
Probably pre-existing |
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Drugs used for eclampsia |
Magnesium sulphate (anti-convulsant) IV labetolol or hydralazine |
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Methyl dopa is contraindicated in |
Depression Asthma |
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Breastfeeding on pregnancy hypertensives |
Is okay |