Fertility Flashcards
Definition and incidence of azoospermia
Complete absence of spermatozoa in the ejaculate
1% all men, 10-15% infertile men
Obstructive causes of azoospermia
MC in the vas deferens epididymus or ejaculatory ducts
- infections
- inflammation
- prev surgery in pelvic area
- development of a cyst
- hernia surgery
- vasectomy
- cystic fibrosis
Non-obstructive causes of azoospermia
Genetic: Kallmans, Klinefelter, Y chromosome deletion
Hormone imbalances
Retrograde ejaculation
Testicular causes:
- Anorchia
- cryptorchidism
- sertoli cell-only syndrome
- Spermatogenic arrest
- mumps orchitis
- testicular torsion
- tumours
- reaction to meds
- radiation
- chronic disease - DM, cirrhosis, renal failure
- Varicocoele
Diagnosing azoospermia
2 separate samples, examined under high-powered microscope following centrifuge spin
If first sample shows azoospermia, send repeat sample ASAP
NB history points wrt azoospermia
Fertility success/ failure
Childhood illness
Surgery/ trauma to pelvic area
Urinary/ reproductive duct tract infections
STIs
Exposure to chemo/ radio
Current/ past meds
Alcohol/ smoking/ drug use
Recent fever or exposure to heat
FHx birth defects, learning disabilities, repro failure or CF
Pituitary sx - anosmia, visual field defects, loss of libido
Ix in azoospermia
Testosterone and FSH level
Genetic testing
XR/ USS reproductive organs
Brain imaging (MRI pituitary)
Testicular biopsy
Management of azoospermi
Depends on cause
Blockage - surgery - unblock/ reconstruct
Low hormone production - HRT: FSH, HCG, clomiphene, anastrazole, letrozole
Varicocoele - surgery
Extensive biopsy for direct sperm retrieval
Abnormal types of findings on semen analysis
Asthenozoospermia - reduced mobility
Oligozoospermia - sperm concentration < 20x10^6/ml
Teratozoospermia - abnormal morphology
Hypospermia - decreased volume ejaculate
Azoospermia - no sperm in sample
Values looked at in semen analysis
Sperm volume
Sperm concentration
Total sperm count
Sperm progressive motility
Sperm morphology
SpermDNA fragmentation
Non-sperm cells
Normal cut off value for sperm volume and concentration
Volume - >1.5ml
Concentration - > 15 million/ml
Normal total sperm count
> 39 million
Normal sperm morphology and motility
Morphology > 4%
Motility > 32%
When to perform an HSG
within first 10 days of a cycle
CI to HSG
Pregnancy
Pelvic infection
Findings seen on HSG
Tubal blockage
Obstruction site
Lumen on tube
Presence of adhesions
Orientation of tubes
Hydrosalpinx
Uterine anomalies
TL reversal
What is salpingitis isthmica nodosa
AKA SIN, diverticulosis of fallopian tubes
= consequence of prev PID
- multiple small diverticular collections of contrast around tube
DDX salpingitis isthmica nodosa
Tubal TB
Endometriosis
Tubal adenomyosis
Risks assoc w HSG
Infection
Injury
Allergy to dye
Radiation exposure
Side effects of HSG
Cramps
Dizziness
Nausea
Vaginal bleeding 1-2days
Problems with fertility in Turners syndrome
Common due to rapid loss of eggs in ovaries
Spontaneous pregnancy is rare - 8%
High rate of miscarriage - 40-45%
Can fall pregnant with donor eggs but increased risk
What makes Turners patients’ pregnancies high risk
Developing heart vessel problems
- during pregnancy, can have aortic rupture
- 100x more likely to die during pregnancy
- vessel changes can persist post pregnancy leading to early. death in mother
NB to have cardio consult and MDT input
40-60% risk of CS due to short stature
Contraindications to pregnancy in Turners patient
Aortic diameter > 35mm
Hx of aortic surgery
Uncontrolled HTN
Impacts of smoking on reproductive health
Cigarette metabolites are toxic to gametes
- morphological problems with sperm
- oxidative damage at oocyte and embryo
Brings forward the age of menopause
Higher change of LBW, PTB, IUGR, SIDS
- LBW: 200% inc risk
- PTB: 50%
- miscarriage: 20-30% risk T1miscarriage
IVF - 40% less likely to conceive if ongoing smoking
Defn POI/ POF
Menopause <40
Approx 1% women
0.1% <30
0.01% <20