Infertility and Assisted Conception Flashcards
what is the definition of infertility?
inability to conceive after twelve months regular intercourse without contraception
what is primary infertility?
when someone who has never had a child before has trouble conceiving
what is secondary infertility?
when someone who has had one or more pregnancies struggles to conceive
how long are regular menstrual cycles?
28-35 days
what is the first day of the menstrual cycle?
the first day of menstruation
what are the two phases of the menstrual cycle?
follicular phase
luteal phase
what defines the follicular and luteal phase?
ovulation
follicular before, luteal after
how long is the luteal phase?
ALWAYS 14 days long
how long is the follicular phase?
variable
how long does bleeding usually last during the menstrual cycle?
3-8 days
how is the length of the menstrual cycle annotated?
7 days bleeding out of a 28 day cycle = 7/28 for example
what is oligomenorrhoea?
cycles >35 days long
what is amenorrhoea?
absence of menstruation
what are the two types of amenorrhoea?
primary
secondary
what is primary amenorrhoea?
never had a period
what is secondary amenorrhoea?
had a period but now they have stopped
what triggers ovulation?
LH surge
what hormone peaks following ovulation?
progesterone
what can be used to detect ovulation and how does this work?
an ovulation predictor kit
detects the LH surge
when does the LH surge occur?
24-36 hours prior to ovulation
what are regular menstrual cycles suggestive of?
ovulation
how can ovulation be confirmed?
mudluteal serum progesterone >30nmol/L
should be taken on day 21/28 - adjust for cycle length
what do irregular cycles suggest and what should be done?
likely anovulatory
need further hormone evaluation
what are the five initial investigations done for infertility in a female?
day 21 progesterone TSH rubella immunity chlamydia screen up to date cervical smear
what blood tests are done if a female is amenorrhoeic or has cycles lasting longer than 42 days?
follicular phase bloods - LH, FSH, E2
testosterone
SHBG
prolactin
what initial investigation is done for infertility in males?
diagnostic semen analysis
what is azoospermia?
no sperm in ejaculate
what is asthenozoospermia?
% of progressive motile sperm is below the reference limit
what is the lower reference limit for sperm concentration?
16 x 10^6 per ml
what is the lower reference limit for sperm with progressive motility?
30%
what is the lower reference limit for sperm with normal morphology?
4%
what is oligozoospermia?
total number/concentration of sperm is below the reference limit
what is teratozoospermia?
the percentage of morphologically normal sperm is below the reference limit
what is oligoasthenozoospermia?
low count + low motility
what is oligoteratozoospermia?
low count + poor morphology
what is asthenoteratozoospermia?
low motility + poor morphology
what is oligoasthenoteratozoospermia?
low motility + low count + poor morphology
what two things need to be established as part of an infertility consultation?
length of the relationship
length of time trying to get pregnant
what three things are done for the female during an infertility consultation?
history
examination/ultrasound
investigations
what four things are done for the male during an infertility consultation?
history
diagnostic semen analysis
examination
investigations
what can usually be seen on a transvaginal ultrasound?
uterus and ovaries
uterine tubes usually not easily identified
what is hydrosalpinx?
fluid in the Fallopian tubes
what test is done to asses tubal patency?
hysterosalpingogram (HSG)
what is involved in an HSG scan?
an x-ray scan
catheter is inserted into the cervix and a dye is injected which should pass through the tubes if they are patent
what other investigation can be done to assess tubal potency if HSG is abnormal/contraindicated?
diagnostic laparoscopy and hydrotubation (HTB)
when is diagnostic laparoscopy and hydrotubation (HTB) chosen over HSG?
possible tubal/pelvic disease
known previous pathology
previously abnormal HSG
what is hysteroscopy used to look at?
the uterus
when is hysteroscopy performed?
when there is suspected or known endometrial pathology
what lifestyle advice should you give to optimise chances of conception?
stop smoking BMI normal range reduce alcohol and caffeine stop recreational drugs take folic acid
what lifestyle advice should you give to optimise chances of conception?
stop smoking BMI normal range reduce alcohol and caffeine stop recreational drugs take folic acid
what is the most common cause of ovulatory problems?
PCOS
what is the name of the criteria used to diagnose PCOS?
Rotterdam diagnostic criteria
when is PCOS diagnosed?
when the patient meets two of the Rotterdam criteria
what are the elements of the Rotterdam criteria?
oligomenorrhoea/amenorrhoea
polycystic ovaries on USS
clinical and/or biochemical signs of hyperandrogenism
what is classified as a polycystic ovary on ultrasound?
presence of 12+ 2-9mm follicles
increased ovarian volume >10ml
what are three possible mechanisms for ovulation induction?
clomifene citrate
gonadotrophin injections
laparoscopic ovarian diathermy
what is the first line option for ovulation induction?
clomifene citrate
how is clomifene citrate administered?
50mg, 100mg and 150mg tablet over days 2-6 of the menstrual cycle
what is an alternative to clomifene citrate for ovulation induction?
letrozole (tamoxifen)
what are the possible risks of gonadotrophin injections?
multiple pregnancy
overstimulation
what is a risk associated with laparoscopic ovarian diathermy?
ovarian destruction
what can be done if a patient shows resistance to clomifene?
weight loss
adjuvant metformin
consider letrozole
what can be done if a patient shows resistance to clomifene?
weight loss
adjuvant metformin
consider letrozole
what bloods should be done if a male has abnormal semen parameters?
LH
FSH
testosterone
what is the main treatment available if a male has abnormal semen parameters?
ART
what are the three options for ART?
intrauterine insemination (IUI)
in vitro fertilisation (IVF)
intracytoplasmic sperm injection (ICSI)
what are the possible options for management of tubal disease?
cannulation using a guide wire or micro catheter for proximal occlusion
generally no treatment - require IVF
to be eligible for ART, how long must the relationship have been stable for?
at least two years
to be eligible for ART, how old must the female be?
<40
to be eligible for ART, what BMI must the female have?
18.5-30
to be eligible for ART, how long must both partners have stopped smoking for?
at least three months prior to treatment
to be eligible for ART, what criteria must both partners meet?
no biological child
no illegal substances
no sterilisation
to be eligible for ART, how long must unexplained infertility have gone on for?
at least two years