Repro Flashcards
Clinical triad of pre-eclampsia?
BP elevated, usually above 140/90
Proteinuria on dipstick or 0.3g or more over 24hrs collection
Oedema of the face/hands/legs/feet
Symptoms of pre-eclampsia
5
Headache Visual disturbance Vomiting Flash oedema Subcostal pain
Antihypertensives safe in pregnancy
3
- LABETALOL
- Methyldopa
- Nifedipine
Prenatal care in pre-eclampsia
incl. foetal monitoring x4
ONCE-ONLY proteinura assessment with dipsticks, if more than 1+, do P:CR or 24 collection
Control BP - almost always labetalol, usually only treat @ 150/100 or more
Measure BP several times per day
Bloods:
Regular U&Es, FBC, bilirubin
Foetal monitoring:
CTG @ diagnosis and weekly
USS foetal growth @ diagnosis
Amniotic fluid volume assessment @ diagnosis
Umbilical artery doppler velocimetry @ diagnosis
Regular assessment of syx
Timing of birth:
Manage conservatively (i.e. not immediate delivery) until 34 weeks unless severe where birth may be offered before
If moderate/mild, offer birth in 24-48hrs where HTN persists to 37+0
REMEMBER STEROIDS IF PRE 36 WEEKS
Intrapartum/postpartum antihypertensive use in pre-eclampsia
Intra: Monitor BP hourly in mild/mod Monitor BP continuously in severe Continue antihypertensive through labour Recommend operative birth in 2nd stage in severe cases not responding to treatment
Post:
Continue treatment postnatally and consider reducing if achieve below 140/90
Maternal complications of eclampsia
8
Placental abruption Neurological defecits Aspiration pneumonia HELLP Pulmonary oedema Cardiovascular problems - IHD, stroke, chronic HTN etc. Acute renal failure Death - via DIC, sepsis, stroke etc
Risk factors for pre-eclampsia
9
Primigravida Extremes of age HTN DM Previous pre-eclampsia Family hx Renal disease Obesity SLE, APLS
Clinical signs of pre-eclampsia
5
HTN Papilloedema Brisk reflexes Clonus Visual defect HELLP syndrome (Seizure - eclampsia)
Foetal complications of eclampsia
3
Prematurity - STEROIDS
IUGR
Bronchopulmonary disease
What is HELLP syndrome? When may it occur?
Haemolysis, elevated liver enzymes, low platelets
As a severe form of pre-eclampsia, patients are at high risk of DIC, abruption, renal failure and pulm oedema
Risks associated with pre-existing maternal DM?
6
Congen abnormalities Misacarriage Macrosomia as a result of foetal hyperinsulinaemia, predisposed to IUD Polyhydramnios Infection Stillbirth
Produce testosterone
Leydig cells
Form the blood-testis barrier
Sertoli cells
Days of the menstrual cycle when menses occur
1 to 7
Causes ovulation
Luteal surge, massive rise of LH @ day 14
Proliferating stage of menstrual cycle
days 7 to 14
Follice becomes this after ovulation
Corpus luteum
Causes proliferation of the endometrium
Progesterone
Produced by the corps luteum when it forms
Progesterone
Progesterone stimulates these to be formed in the endometrium
Spiral arteries
Increases uterine secretions to nourish embryo
Progesterone
Produced by a blastocyst upon implantation
hCG
Happens to the corpus luteum if no implantation, and why
atrophies and dies, as LH no longer being produced, then means no progesterone and next follicular phase can begin
Happens to corpus luteum if implantation occurs
hCG resembles LH, so CL can survive and continue to produce
Produces progesterone from 2-3 months to delivery
Placenta
Biochemical test of ovulation
21 day progesterone
2 hormones which surge at ovulation
LH, oestrogen
Hormone detected by preg test
hCG
Cryptochordism
Undecended testes
Primary infertility
Never concieved
Secondary infertility
Concieved before but not this time
Infertility
failure to conceive after 1 year of regular unprotected sex with no other cause
Aspermia
Absence of ejaculate
Oligozoospermia
less than 15 mil sperm per mil
Azoospermia and causes
Absence of sperm in the semen Primary - problem with testes (likely Leydigs) or secondary testicular failure (higher up the axis) CFTR mutation Blockage of the repro tract Chromosomal abnormality
Reduced sperm motility important diagnosis
Kartagener syndrome aka primary ciliary dyskinesia
3 things that are nor labour
Braxton Hicks contractions: irreg, no increase in frequency or intensit
Show - mucous plug
PROM
1st stage of labour
onset of true labour to full dilation (10cm)
2nd stage of labour
full cervical dilation (10cm) to delivery of baby
3rd stage of labour
delivery of baby to delivery of placenta and membranes
should happen within 30 mins
1st trimester
Last day of last menses to end of week 12
2nd trimester
Start of week 13 to end of week 27
3rd trimester
Start of week 28 to end of week 40
Causes of female infertility
5
Ovarian dysfunction - PCOS (androgen excess)
Tubular problem - blockage - test with Hysterosalpingography
Premature ovarian failure (diminished reserve)
Endometriosis - adhesions
PID
Causes of male infertility
Pre-testicular (4)
Intrinsic (6)
Post (5)
Pre: Hormonal - impaired secretion of GnRH Drugs - illicit and chemo, anabolic steroids, spironolactone, phenytoin, sulfasalazine Alcohol Coeliac disease
Intrinsic: Varicocele Kleinfelter's - 46XY Neoplasm Cryptochordism Trauma Hydrocele
Post: Vas deferens - obstruction, absence (CF) Retrograde ejeculation Hypospadias Impotence Infection e.g. prostitis
Missed miscarriage management
Conservative
Prostaglandins
Surgical
Most common ectopic locataion
Ampulla of fallopian tube
Period of amenhorroea and +ve preg test with nothing in uterus likely diagnosis
Ectopic
Management of ectopic
Methotraxate
Salpingectomy (tubes preserved)
Painless PV bleed in pregnancy most likely cause
Praevia
Contraindicated in praevia
PV EXAMINATION
Grades of praevia
1 to 4
- not reaches os
- reached os
- partially covering os
- totally covering os - centrally located
Painful PV bleed in pregnancy most likely casue
Abruption
Types of abruption
Revealed - blood scapes through os
Concealed - bleed between placenta and uterine wall
Mixed
Risk factors for abruption
6
Pre-eclampsia Chronic HTN Multiparity Polyhydramnios Cocaine Smoking
Complications of abruption
4
Maternal shock, collapse - blood loss may be deceptive
Foetal demise
MAternal DIC, renal failure
PPH!!!
Management of abruption
Live foetus >34 weeks: Foetus stable - vaginal delivery may need induction may need blood products may need OXYTOCIN may need STEROIDS may need ANTI-D Foetus/mother unstable - emergency CS
Live foetus <34 weeks: Foetus stable - conservative STEROIDS consider delivery by 37-38 weeks Foetus/mother unstable - emergency CS may need OXYTOCIN
Foetal demise:
Mother stable - vaginal delivery
Mother unstable - emergency CS
Eclampsia treatment
Emergency delivery of foetus
Magnesium sulphate
Labetalol
Causes of APH
3
Praevia (30%)
Abruption (30%)
Benign bloody show
APH definition
Genital bleeding post 24 weeks and pre-labour
IOL definiton
forced commencement of labour through medication or rupture of membranes artificially - amniotomy
Bishop score above which IOL unlikely to be required
7 and above
Indications for IOL
4
DM Term +7 DVT treatment IUG concerns Oligohydramnios
Drug used to initiate contractions and reduce uterine atony
OXYTOCIN
Reasons for inadequate progress in labour
3
Cephalopelvic dispropotion
Malposition
Malpresentation
Determinants of progress
3
Cervical effacement
Cervical dilation
Descent of the foetal head
Ways to monitor the foetus
5
Heart auscultation Foetal movements CTG Blood sampling ECG
Normal foetal blood pH
> or = to 7.25
Contraindications to vaginal delivery
Obstruction - Praevia, masses e.g. cyst, fibroid
Malpresentation - certain settings
Complications of 3rd stage of labour
3
PPH
Tear (grades 1-4)
Retained placenta
Major postnatal compliactions
5
PPH - primary and secondary VTE Sepsis Psychiatric disorders Pre-eclampsia
Primary PPH definition
> 500mls blood loss within 24hrs of delivery
Secondary PPH definition
> 500mls blood loss from 24hrs post delivery to 6 weeks
Causes of primary PPH
4 T’s!!! - Tone, Trauma, Tissue, Thrombin
Tone - uterine atony - oxytocin Trauma - tears - uterine rupture - inverted uterus Tissue - retained placenta Thrombin - inherited coagulopathies, DIC
Common teratogens and their effects
10
ACEIs - IUGR, renal dysplasia/failure
Alcohol - IUGR, foetal alcohol syndrome, mental retardation
Lithium - various, usually heart and great vessel malformations
Phenytoin/carbamazepine - foetal hydantoin syndrome - cleft lip/palate, depressed nasal bridge, short nose, mental retardation
Sodium valproate - foetal valproate syndrome - high forehead, infraorbital crease or groove, small mouth
Methotrexate - multiple skeletal abnormalities
Doxycycline - affect bone and teeth development
Radiation - microcephaly, mental retardation
Retinoic acid - NTDs e.g. spina bifida
Warfarin - foetal warfarin syndrome
Common teratogenic infections and their effects
6
CMV - microcephaly, chorioretinitis, mental retardation, deafness
HSV - microcephaly, microphthalmia, retinal dysplasia
Rubella - cataracts, glaucoma, deafness
VZV - skin scarring, muscular atrophy, mental defects
Treponema pallidum - hydrocephalus, deafness
Toxoplasma gondii - microcephaly, mental retardation, chorioretinitis
Period of greatest risk to foetus of teratogenicity
Organogenesis - 3-8 weeks
COCP mechanisms of action
3
Prevents ovulation - prevents LH surge
Temporarily renders endometrium inadequate
Thickens cervical mucus
Benefits of COCP
3
Increases regularity of menses
May help in menorrhagia
Reduces risk of ovarian and cervical cancer
Risks of COCP
3
3x increase risk of VTE
Small risk of ischaemic stroke - GREATER IN MIGRAINE WITH AURA - CONTRAINDICATED
Small increase in risk of breast cancer
POP mechanism of action
Thickens cervical mucus
Major downside of POP
Must be taken in same 3 hour window each day
DepoProvera mechanism of action
Mainly prevents ovulation
How often is Depo given
Every 12 weeks
Benefits of Depo injection
2
Good in poorly compliant patients
70% amenorrhoeic during treatment
Problems with Depo injection
4
Only one to cause a delay in return to fertility
Reversible decrease in bone density
Problematic bleeding when it occurs
Weight gain
Subdermal implant mechanism of action
Inhibition of ovulation
How long does a subdermal implant last?
3 years
What are the two forms of intrauterine contraception?
Copper coil - older method, makes periods heavier
Mirena - FIRST LINE IN MENORRHAGIA
3 forms of emergency contraception and their period of effect
Levonorgestrel pill - 72 hours
Ella one pill - 120 hours
Cu ICD - 120 hours
Up to what point can TOP be carried out in Scotland?
20 weeks
2 drugs used in medical TOP
Misoprostol
Mifepristone
Normal upper limit for abortion
24 weeks
Normal upper limit for medical abortion
10 weeks
Law under which abortion is legal in the UK
The Abortion Act 1967
Two key conditions of the abortion act
The abortion is carried out in a hospital or licensed clinic
Two doctors agree that continuing with the pregnancy would be more harmful to the physical or mental health of the pregnant woman or any existing children of her family than if the pregnancy was aborted
Conditions under which an abortion can be carried out after 24 weeks
It is necessary to save the woman’s life; or
It will prevent grave, permanent injury to the physical or mental health of the pregnant woman; or
There is substantial risk that if the child were born it would suffer from such physical or mental abnormalities as to be seriously handicapped.
Classical findings of vulvovaginal candidiasis (thrush)
3
Fissuring
Erythema with satellite lesions
Discharge - may be cottage-cheese like or simply more than usual
Treatment for candidiasis
Clotrimazole
Fluconazole