Obstetrics and Gynaecology Flashcards
(174 cards)
Define gestational diabetes:
Defined as the glucose intolerance with fasting blood glucose >= 5.6 mmol/L OR 2 hour plasma glucose levels >= 7.8 mmol/L on 75g OGTT.
What are the risk factors of developing gestational diabetes?
- asian/ black
- hx GDM/ thx
- hx of babies delivered >4.5 kg
- hx of stillbirth/ perinatal death
- maternal obesity (BMI>30)
What are the symptoms of gestational diabetes?
- polyuria
- thirst
- fatigue
- no noticable symptoms
What are the investigations to diagnose gestational diabetes?
75g OGTT
* fasting glucose >=5.6
* 2 hour glucose >= 7.8
HbA1c (to distinguish between gestational diabetes/ pre-existing diabetes mellitus)
Urinanalysis (glycosuria)
What is the management of gestational diabetes?
- lifestyle modifications when fasting glucose is < 7 mmol/L; if lifestyle measures not helping in 2 weeks then start on metformin.
- if fasting glucoses >= 7 mmol/L = insulin +/- metformin 1st line!!
What are the maternal complications of untreated gestational diabetes?
- increased risk of HTN and Pre-eclampsia
- increased risk of T2DM
What are the foetal complications of untreated gestational diabetes?
Macrosomia (>4.5kg)
* increased risk of birth injuries, c-section, shoulder dystocia
* increased risk of sacral agenesis
* pre-term delivery
* Neonatal hypoglycaemia= seizures
* increased risk of child getting T2DM later in life
Define gestational Hypertension:
The onset of high BP after 20 weeks gestation with NO proteinuria.
This increases the mother’s risk of pre-eclampsia and low birth weight of baby.
What are the risk factors of gestational hypertension:
- genetic
- lifestyle
- physiological changes of pregnancy
What are the symptoms of Gestational HTN?
- Raised BP
- NO proteinuria
What are the Ix of gestational hypertension?
- BP
- Urine dip
Do these at every appointment
What is the management of gestational hypertension?
- discontinue ACEi- give labetolol
- monitor BP regularly and do urine dip
- if BP >140/90:
- 1st Oral labetalol
- 2nd methyldopa/ nifedipine - diet/ exercise
Define Pre-eclampsia:
A placental condition affecting preganant women from 20 weeks of getsation, characterised by HTN and PROTEINURIA.
What are the risk factors to developing Pre-eclampsia?
- nulliparity
- hx/ fhx
- increasing maternal age
- pre-existing DM/ HTN/ renal/ autoimmune
- obesity
What are the symptoms of Pre-eclampsia?
- HTN
- proteinuria
- peripheral edema including face
- severe headache
- drowsy
- visual disturbance
- RUQ/ epigastric [pain
*Nausea and vomiting - hyperreflexia
What is the aetiology of Pre-eclampsia?
- dysfunctional trophoblast invasion of the spiral arterioles which decreased uteroplacental blood flow and causes endothelia damage.
What is the investigations indicated in a patient who is suspected to have Pre-eclampsia?
- BP= HTN
- Urinanalysis
- bloods test: LFT, kidney, clotting
What is the management of Pre-eclampsia?
- Aspirin as prophylaxis from 12 weeks until birth
- 1st line= labetolol ( can give nifedipine, methyldopa, hydralazine)
- magnesium sulphate for prevention and treatment of ECLAMPTIC SEIZURES.
- curative= delivery of placenta
What are the complications to the mother if Pre-eclampsia is left untreated?
- eclampsia/ seizures
- Organ failure
- DIC
- HELLP syndrome ( Haemolysis, Elevated liver enzymes, Low platelets)
What are the complications to the foetus if Pre-eclampsia is left untreated?
- intrauterine growth restriction
- pre-term delivery
- placental abruption
- neonatal hypoxia
Define Placental Abruption:
This is the premature separation of the placenta from the uterine wall during pregnancy, causing maternal haemorrhage.
What are the risk factors to developing Placental Abruption?
- trauma
- pre-eclampsia/ HTN
- multiparity
- increased age
- polyhydramnios
- hx
- substance abuse during pregnancy
- coagulation disorders
What are the symptoms of Placental Abruption?
- sudden/ severe abdominal pain
- ‘woody’/ hard uterus
- contractions
- vaginal bleeding ( which can be concealed)
- reduced foetal movements
- Abnormal CTG
- hypovolaemic shock
How to manage Placental Abruption?
- resus ABCDE
- emergency delivery which is usually c-section
- induced labour if haemorrhage
- conservative management ( only for partial/ marginal abruptions with no compromise)
- FOR ALL PATIENTS: ANTI-D <= 72 hours of bleeding if woman is resus D negative.