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1. Infertility UNC School of Medicine
Obstetrics and Gynecology Clerkship
Case Based Seminar Series
2. Objectives for Infertility Define infertility
Describe the causes of male and female infertility
Describe the evaluation and initial management of an infertile couple
List the psychosocial issues associated with infertility
3. Failure of a couple to conceive after 1 year of regular intercourse without use of contraception
Primary infertility – No prior pregnancies
Secondary infertility – Prior pregnancy Definition
4. Infertility affects 10-15% of reproductive-age couples in the U.S.
Approx. 85% of couples achieve pregnancy within 1 year
Conception rate (fecundability)
25% conceive within 1 mo.
60% conceive within 6 mo.’s
75% conceive within 9 mo.’s
90% conceive within 18 mo.’s Prevalence
5. Successful conception requires a specific series of events:
Ovulation of competent oocyte
Production of competent sperm
Juxtaposition of sperm and oocyte in a patent reproductive tract
Fertilization
Generation of a viable embryo
Transport of the embryo to the uterine cavity
Implantation of the embryo into the endometrium Etiology
6. Major causes of of infertility:
Female factor – 60%
Ovulatory dysfunction
Abnormalities of female reproductive tract
Peritoneal factors
Reproductive aging
Male factor – 20%
Abnormal semen quality
Abnormalities of male reproductive tract
Idiopathic – 15%
Infertility in ~ 20-40% of couples has multiple causes Etiology
7. Female
Duration of infertility and prior evaluation or therapy
Menstrual cycle (length and characteristics)
Symptoms associated with ovulation (e.g. breast tenderness, bloating, mood changes)
Full OBHx and GynHx
Prior pregnancies, surgeries, or STD’s
Sexual history (frequency of intercourse)
Chronic medical illness
Family history (infertility, birth defects, genetic disorders)
Social history (smoking, EtOH, drugs)
Infertility: History
8. Male
Prior children
Genital tract infections
Genital surgery or trauma
Chronic medical illness
Medications (e.g. Furantoins, CCB)
EtOH, drugs, or smoking
Sexual history (frequency of intercourse) Infertility: History
9. Female
Height, weight , BMI
Pelvic exam
Masses
Tenderness (Adnexa, Cul-de-sac)
Structural abnormalities (Vagina, Cervix, or Uterus)
Male (Urologist referral)
Evidence of androgen deficiency
Structural defects (e.g. varicocele, hernia)
Infertility: Physical Exam
10. Male factor: Evaluation
11. Male factor: Evaluation
12. Male factor: Evaluation
13. Male factor: Evaluation
14. Female factor: Evaluation Chlamydia
Gonorrhea
TSH
prolactinChlamydia
Gonorrhea
TSH
prolactin
15. Female factor: Menstrual Cycle
16. Ovulation
Initial evaluation:
Basal body temp – rise for > 10 days indicates ovulation
Ovulation predictor kit – detects LH surge in urine
Further evaluation:
Mid-luteal phase progesterone level - level > 3 ng/mL provides qualitative evidence of recent ovulation
Endocrine testing (TSH, prolactin, FSH, LH, Estradiol, DHEA-S)
Endometrial biopsy
Not routinely performed
Female factor: Evaluation
17. Female factor: Evaluation
18. Female factor: Evaluation
19. Female factor: Evaluation
20. Female factor: Evaluation Infertility
45 ~100%
35 ~15%Infertility
45 ~100%
35 ~15%
21. Female factor: Evaluation
22. Idiopathic Infertility
23. Infertility: Management
24. Infertility: Management
25. Infertility: Management
26. Infertility: Management (IVF)
27. The psychological stress associated with infertility must be recognized and patients should be counseled appropriately. Psychological
28. Bottom Line Concepts Infertility is defined as one year of unprotected coitus without conception. Infertility may be primary or secondary.
Multiple causes must be considered for infertility diagnosis and treatment.
Male and female reproductive tract anatomy and physiology should be reviewed in order to generate a full differential diagnosis.
Components of an initial infertility workup include a thorough history and physical examination. Laboratory investigations include a semen analysis, documentation of ovulation, and hysterosalpingogram.
Dysfunction of the hypothalamic-pituitary-ovarian (HPO) axis and medical illness, including thyroid disease and pituitary tumors, can cause ovulatory disturbances.
Success rates with IVF depend on the etiology of infertility and the age of the female partner.
29. References and Resources APGO Medical Student Educational Objectives, 9th edition, (2009), Educational Topic 48 (p102-103).
Beckman & Ling: Obstetrics and Gynecology, 6th edition, (2010), Charles RB Beckmann, Frank W Ling, Barabara M Barzansky, William NP Herbert, Douglas W Laube, Roger P Smith. Chapter 38 (p337-346).
Hacker & Moore: Hacker and Moore's Essentials of Obstetrics and Gynecology, 5th edition (2009), Neville F Hacker, Joseph C Gambone, Calvin J Hobel. Chapter 34 (p371-378).