Gynaecology Flashcards
What is the difference between primary and secondary amenorrhoea?
Primary= when the patient never developed periods Secondary= when the patient previously had periods but they have stopped.
Why may a patient be experiencing primary amenorrhoea?
Abnormal functioning of the hypothalamus or pituitary gland (hypogonadotropic hypogonadism)
Abnormal functioning of the gonads
(Hypergonadotropic hypogonadism)
Imperforate hymen or other structural pathology
What is secondary amenorrhoea due to?
Pregnancy
Menopause
Physiological stress (exercise, low body weight, psychosocial)
Polycystic ovarian syndrome
Medications- hormonal contraceptives
Premature ovarian insufficiency (menopause before 40 years)
Thyroid hormone abnormalities (hypo or hyper)
Excessive prolactin- prolactinoma
Cushings
What is meant by abnormal uterine bleeding?
Irregularities in the menstrual cycle, affecting the frequency, duration, regularity of cycle length and volume of menses.
Irregular menstrual periods indicate either anovulation or irregular ovulation.
What is intermenstrual bleeding?
Bleeding between menses
What are the key causes of intermenstrual bleeding?
Hormonal contraception Cervical ectropion, polyps or cancer Sexually transmitted infection Endometrial polyps or cancer Vaginal pathology Pregnancy Ovulation can cause spotting in some women Medications- SSRIs, anticoagulants
What are the causes of Dysmenorrhoea?
Describes painful periods, causes are: . Primary Dysmenorrhoea (no underlying pathology) . Endometriosis/ adenomyosis . Fibroids . Cervical or ovarian cancer . Pelvic inflammatory disease . Copper coil
What is the cause of menorrhagia?
Dysfunctional uterine bleeding (cause unknown) Extremes of reproductive age Fibroids Endometriosis/ adenomyosis Pelvic inflammatory disease (infection) Contraceptives- copper cool Anticoagulants Von Willebrand disease Diabetes and hypothyroidism Connective tissue disorders Endometrial hyperplasia or cancer Polycystic ovarian syndrome
What could cause postcoital bleeding?
Red flag Key causes are: Cervical cancer, ectropion or infection Trauma Atrophic vaginitis Polyps Endometrial cancer Vaginal cancer
What are the causes of pelvic pain?
. UTI . Dysmenorrhoea (painful periods) . IBS . Ovarian cysts . Endometriosis . Pelvic inflammatory disease (infection) . Ectopic pregnancy . Appendicitis . Pelvic adhesions . Ovarian torsion . Inflammatory bowel disease
What can be the cause of vaginal discharge?
Vaginal discharge is actually a normal physiological finding, however excessive, discoloured or foul smelling can indicate the following…
. Bacterial vaginosis . Trichomonas vaginalis . Foreign body . Cervical ectropion . Polyps . Malignancy . Pregnancy . Ovulation (cyclical) . Hormonal contraception
What is pruritus vulvae?
Itching of the vagina and vulva, causes include... Irritants Atrophic vaginitis Infections- candidiasis (thrush) and public lice Eczema Stress Vulval malignancy Pregnancy related vaginal discharge Urinary or faecal incontinence Stress
What is meant by hypogonadism?
Lack of sex hormones, oestrogen and testosterone
The lack of sex hormones, is due to one of two reasons…
1) hypogonadotropic hypogonadism- deficiency in LH and FSH
2) hypergonadotropic hypogonadism- a lack of response to LHand FSH by the gonads
What is meant by HYPOgonadotropic hypogonadism?
Deficiency in LH and FSH leading to deficiency in the sex hormones
LH and FSH= gonadotropins
No Gonadotropins to stimulate the gonads
What are the causes of hypogonadotropic hypogonadism?
Hypopituitarism
Damage to hypothalamus or pituitary for example: radiotherapy/surgery for cancer
Significant chronic conditions- temporarily delay puberty (CF, IBD)
Excessive exercise or dieting
Constitutional delay in growth and development
Endocrine disorders- GH deficiency, hypothyroidism, Cushing’s, hyperprolactinaemia, Kallman syndrome
What is Kallman syndrome?
Genetic condition causing hypogonadotropic hypogonadism, it is associated with anosmia.
What is hypergonadotropic hypogonadism?
Where the gonads fail to respond to stimulation from the gonadotropins, lack of negative feedback therefore leads to high levels of gonadotropins (hypergonadotropic) and low sex hormones (hypogonadism)
What are the causes of hypergonadotropic hypogonadism?
Previous damage to the gonads (torsion, cancer, infections like mumps)
Congenital absence of the ovaries
Turners syndrome
What is congenital adrenal hyperplasia?
Congenital deficiency of 21- hydroxylase enzyme, this causes underproduction of cortisol and aldosterone and overproduction of androgens from birth.
How does congenital adrenal hyperplasia present?
In severe cases, neonates are unwell shortly after birth, with electrolyte disturbances and hypoglycaemia
In mild cases, female patients can present later in childhood or at puberty, with typical features…
. Facial hair, deep voice, primary amenorrhoea, early puberty, tall for their age
What is androgen insensitivity syndrome?
Occurs in males, tissues are unable to respond to androgens, have female external genitalia but testes In the abdomen or inguinal canal.
What bloods should you do when someone is experiencing primary amenorrhoea?
FBC and ferritin for anaemia
U and E’s for CKD
Anti TTG or anti EMA for coeliac
Hormonal blood tests;
. FSH and LH will be low in hypogonadotropic hypogonadism and high in hypergonadotropic hypogonadism
. TFTs
. Insulin like growth factor (screening for GH deficiency)
. Prolactin (raised in hyperprolactinaemia)
. Testosterone (raised in PCOS, androgen insensitivity syndrome and congenital adrenal hyperplasia)
. Genetic testing- microarray test to look for genetic conditions such as: turners
. Imaging- X-ray of wrist to assess bone age and diagnosis of constitutional delay
Pelvic US to assess ovaries and other pelvic organs
MRI of the brain to look for pituitary pathologyj
How do you treat patients with hypogonadotropic hypogonadism causing primary amenorrhoea ?
Pulsatile GnRH
Or replacement sex hormones in the form of COCP if pregnancy not wanted
How do you treat a patient with amenorrhoea due to ovarian cause ( PCOS, damage or absence of ovaries?)
COCP