Gynaecological problems 1 Flashcards
What occurs on day 1-4 of the menstrual cycle?
menstruation
endometrium is shed myometrial contraction (poss pain due to vasopressin receptors)
What occurs on day 5-13 of the menstrual cycle?
GnRH (hypothalamus) stimulate LH+FSH
Follicular growth
Follicles produce oestradiol + inhibin
FSH secretion suppressed so only one follicle/oocyte matures
Oestradiol rises
LH rises - ovulation follows 36 hours after
Endometrium reforms, thickens when stromal cells proliferate + glands elongate
What happens on day 14-28 of the menstrual cycle?
Follicle become corpus luteum
Oestradiol and Progesterone = secondary changes in endometrium
Corpus luteum fails if eggs not fertilised
Progesterone and oestradiol
Endometrium breaks down
How are menstrual disorders managed?
FBC
Pelvic US
Sometimes endometrial biopsy and hysterectomy if intermenstrual bleeding/thickened/irregular endometrium/ ages >40
What is the medical treatment for menstrual disorders?
reduce volume (IUS/tranexamic acid/mefanamic acid/combined contraceptive)
What is the surgical treatment for menstrual disorders?
hysteroscopic surgery
hysterectomy
myomectomy/embolization if fibroids
What is menarche?
onset of menstruation
last stage of puberty in females
on average 13 years
may be irregular at first
What is precocious puberty?
if menstruation occurs before 10/other secondary sexual characteristics before 8
What are the causes of precocious puberty?
increased GnRH due to meningitis
encephalitis
CNS tumours
hydrocephaly and hyperthyroidism/ increased oestrogen secretion due to tumours
What is menopause?
permanent cessation of menstruation resulting from loss of ovarian follicular activity
median age 51 years
What is defined as premature menopause?
menopause occurring before the age of 40
What are the causes of premature menopause?
usually no cause surgical menopause - if bilateral oophorectomy infections autoimmune disorders chemotherapy ovarian dysgenesis metabolic diseases
How is premature menopause managed?
HRT until at least 50
Oocyte donation for fertility
What are the symptoms of menopause?
vasomotor symptoms - hot flushes and night sweats
Urogenital problems - vaginal atrophy causing dyspareunia, cessation of sexual activity, itching, burning and dryness
urinary symptoms - frequency, urgency, nocturia, incontinence
sexual problems
osteoporosis
What are the RFs for osteoporosis after menopause?
parental history of fracture early menopause chronic use of corticosteroids prolonged immunisation prior fracture diseases - RA, NM disease