Gynaecology Flashcards
what is a threatened miscarriage?
Symptoms of bleeding/pain but pregnancy continues.
Cervical os closed & uterine size normal for dates
what is an inevitable miscarriage?
Presents in the process of miscarriage although fetes may still be alive. Cervical os is open
in a complete miscarriage what can be seen on examination?
cervical os is Closed
Uterus no longer enlarged
at how many weeks by transvaginal ultrasound will the fetal heartbeat be detected?
6+ weeks
when is the yolk sac visible by TV ultrasound?
5.5 weeks
what drugs are used in the medical management of miscarriage?
Prostaglandins (misoprostol) +/- Antiprogesterones (mifepristone)
how to prostaglandins and antiprogesterones work to assist in medical management of miscarriage?
Induce uterine contractions to expel remaining POC.
what is a recurrent miscarriage?
> 3 miscarriages in succession
how are antiphospholipid antibodies managed as a cause of recurrent miscarriage?
Aspirin and LMWH
*likely thrombosis in uteroplacental circulation
what is the most common site of ectopic pregnancy?
Fallopian tube (95%)
cannot be viewed on USS
on examination what is the size of the uterus and status of the cervical os in ectopic pregnancy?
Uterus - smaller than expected
Cervical os - closed
what is the difference in timings between a transvaginal and abdominal ultrasound?
On abdominal ultrasound landmarks will not be seen until a week later
what is the surgical management of ectopic pregnancy?
Salpingectomy = removal of affected tube.
what is a salpingostomy?
Removal of ectopic from the tube
what drug is used in the medical management of ectopic pregnancy?
Methotrexate
what is a molar pregnancy?
Trophoplastic tissue (which is part of the blastocyst that normally invades the endometrium) proliferates in a more aggressive way than normal.
what is the classic appearance on ultrasound in molar pregnancy?
‘SNOWSTORM’ appearance of swollen villi with complete moles
what is hyperemesis gravidarum?
Excessive nausea and vomiting of pregnancy such that the individual is unable to maintain adequate hydration & endangers fluid, electrolyte and ; nutritional status.
what is the definition of post-menopausal bleeding?
Vaginal bleeding occurring atleast 12 months after the last menstrual period
In PMB when is endometrial biopsy +/- hysteroscopy indicated?
If the endometrium is >4mm or multiple bleeds
what are fibroids?
Benign tumours of the myometrium
why do fibroids regress after the menopause?
Due to a reduction in circulating oestrogen
what are the pressure effects of fibroids?
Bladder - frequency, retention, hydronephrosis
On examination what is the classic finding in a patient with fibroids?
Solid mass may be palpable - arise from the pelvis and be continuous with the uterus
Multiple small fibroids - knobbly enlargement.
how do GnRH agonists work in treatment of fibroids?
Cause temporary amenorrhoea and fibroid shrinkage by inducing a temporary menopausal state
which phase of the menstrual cycle is constant?
Luteal phase (last 14 days)
when is the proliferative phase of the menstrual cycle and which hormone is responsible?
Proliferative phase = days 5-14
Oestrogen produced by Follicles
when is the secretory phase of the menstrual cycle and which hormone is responsible?
Secretory phase: day 14-28
corpus luteum produces PROGESTERONE -
from where are FSH and LH secreted?
Anterior Pituitary
From where is Gonadotrophin-Releasing hormone (GnRH) produced?
Hypothalamus
from where is oestrogen released?
Ovary
which hormone is responsible for ovulation?
LH (causes ovulation 36 hours after surge)
what is a Graffian follicle?
An almost mature follicle
*corpus haemorrhagicum = ruptured follicle
what hormones are secreted by the corpus luteum?
PROGESTERONE
*also oestradiol
when do progesterone levels peak?
Day 21
what effect does progesterone have on the endometrium?
Causes secretory changes in the endometrium, increased lipids and glycogen, glands swell and there is an increased blood supply
how thick is the endometrium at ovulation?
2-3mm
how thick is the endometrium in the secretory phase?
4-6mm
on what day is the optimal condition for implantation?
day 20-22: stable, vascular, nutrient rich
what are the characteristics of the cervix mid cycle?
Strongly and runny (spinnbarkeit)
Facilitates sperm access at ovulation to promote the chances of fertilisation taking place
what are the characteristics of the cervix in the luteal phase?
Tenacious and inelastic (due to progesterone). Prevents microbial ingress, protects developing embryo. Critical to maintenance of pregnancy (mucus plug)
what is menorrhagia defined as?
Blood loss >80mL in an otherwise normal menstrual cycle
what investigation can be used to assess endometrial thickness?
TV ultrasound
in which women would you perform an endometrial biopsy if they present with menorrhagia?
Endometrial thickness >10mm
suspected polyp
>40 years recent onset
what are the common anatomical causes of menorrhagia?
Fibroids
Polyps
Adenomyosis
Tumours
in which situation would you to uterine artery embolisation instead of a myomectomy for the treatment of fibroids?
For woman who want to retain the uterus and avoid surgery
what is the definition of oligomenorrhoea?
menstruation that occurs every 35 days to 6 months
what is primary amenorrhoea?
Where menstruation has not begun by age 16
what is secondary amenorrhoea?
Where previous normal menstruation ceases for >6months
what is asherman’s syndrome?
Asherman syndrome (AS) or Fritsch syndrome, is a condition characterized by adhesions and/or fibrosis of the endometrium particularly but can also affect the myometrium