Amenorrhoea Flashcards
what are the 2 types of amenorrhoea?
primary 1^
secondary 2^
What is primary amenorrhoea?
never had a period
13y/o + no primary sexual characteristics (body/facial hair)
15y/o + no secondary sexual development (androgens responsible for this eg. pubic hair, acne, voice deep, sweat glands)
What are the 2 cases of primary amenorrhoea?
Hypergonadotrophic hypogonadism
hypogonadotrophic hypogonadism (hypothalamic)
What happens in hypergonadotrophic amenorrhoea?
what is high/low?
High LH/FSH
ovary doesn’t respond to the FSH/LH so -ve feedback causes more to be produced
What causes hypergonadism?
Turners + dysgenesis/agenesis (abnormal organ development during embryonic growth and development. As opposed to agenesis, which refers to the complete failure of an organ to develop)
what Is turners?
missing sex chromosome 45XO
What happens in hypogonadotrophic amenorrhoea?
what is high/low?
low FSH/LH due to hypothalamus not producing hormones to produce FSH/LH
What causes hypogonadism?
Kallman’s (delayed puberty + anosmia (partial/full smell loss))
Failure to thrive
What is secondary amenorrhoea?
6 or more months of no periods in a prev normally menstruating female
What are the causes of 2^ amenorrhoea?
Sheehans - pituitary necrosis after PPH low FSH/LH
Ashermann - uterine adhesions post surgery
Eating disorder, hyperthyroid, PCOS, preg, ectopic, perimenopausal
How would you diagnose amenorrhoea?
what tests would you do?
sex bloods - oest, prog, testosterone, FSH, LH, Prolactin, sex hormone binding globulin (SHBG), TFTs (high T4?), IGF-1
HbA1C - PCOS
Hx and Exam (bimanual)
Urine bhCG (Pregnancy)
Tx for:
Hypergonadism?
Hypogonasism?
2^?
GnRH Analogue (reduces LH + FSH)
COCP (needs oest + prog)
Tx underlying cause
What are 3 congenital gynae defects?
bicornate uterus
transverse vaginal septae
Mullerian agenesis
What is a bicornate uterus?
increases risk of?
heart shaped uterus
high risk of miscarriage + IUGR
What is a transverse vaginal septae?
2 types?
increases risk of?
perforate (has hole = bleeds period)
imperforate (no hole = no bleed)
(1^ amenorrhoea with 2^ sexual development)
high risk of infertility + endometriosis