7. Infertility (lecture) Flashcards
what is the definition of infertility?
failure of conception in a couple having regular, unprotected coitus for one year
what is primary and secondary infertility?
primary: no previous pregnancy
secondary: previous pregnancy, successful or not
about how many couples will have difficulty conceiving in the UK?
1 in 7 couples
what aspects of history do you ask for in an infertile female?
age duration of infertility menstrual cycle - length and predictability of cycle, age of menarche tubal / pelvic surgery PID menorrhagia (abnormally heavy periods) pelvic pain sexual history - any infections?
what aspects of history do you ask for in an infertile male?
general health alcohol / smoking previous surgery to the testes drug history previous infections sexual dysfunction
what do you examine in infertility?
BMI
signs of secondary sexual characteristics (e.g. chromosomal abnormalities)
galactorrhoea (milky secretion from the breasts)
pelvic examination - feel for structural abnormalities
additionally, what do you check for in males?
testicular size and check for descent (from lumbar spine)
do NOT perform male examination without relevant history
what are the most common aetiology of infertility?
male factors - 30% Ovulatory disorders - 25% tubal damage - 20% uterine / peritoneal disease <10% others (no identified male / female cause) - 25%
what is the most common male factor causing infertility?
idiopathic oligospermia (deficiency of sperm cells in the semen)
aside from idiopathic oligospermia, what are the other causes of infertility in males?
Varicocele
Abnormal sperm production (e.g. testicular disease)
Hypothalamic / pituitary dysfunction (not enough testosterone, so can’t produce sperm)
Ductal obstruction - post infective epididymitis, post vasectomy
Failure to deliver sperm to the vagina (hypospadias, impotence)
what is hypospadias? (leading to failure to deliver sperm to vagina)
a congenital condition in males in which the opening of the urethra is on the underside of the penis (instead of at glans penis)
what is impotence in men (leading to failure to deliver sperm to vagina)?
inability in a man to achieve an erection or orgasm
what is varicocele in men (leading to infertility)?
when veins become enlarged inside scrotum
what are the different classifications of ovulatory disorders?
- Hypothalamic pituitary failure (GnRH to AP)
- Hypothalamic-pituitary-ovarian dysfunction (GnRH, or AP affecting ovaries theca cells)
- Ovarian failure (has stimulation but theca cells not producing oestrogen)
what is polycystic ovary syndrome?
syndrome consisting of polycystic ovaries and systemic features resulting from elevated androgens