the challenge of the miracle of life - infertility
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The Challenge of the Miracle of Life - Infertility. Jennifer McDonald DO. Fecundability. Probability of achieving a pregnancy within one menstrual cycle 25% for normal couples. Infertility. Couple’s failure to achieve pregnancy after one year of regular, unprotected intercourse - PowerPoint PPT PresentationTRANSCRIPT
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The Challenge of the Miracle of Life - Infertility
Jennifer McDonald DO
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Fecundability
Probability of achieving a pregnancy within one menstrual cycle
25% for normal couples
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Infertility Couple’s failure to achieve
pregnancy after one year of regular, unprotected intercourse
US ~ 15% couples Incidence has remained stable over
last three decadesPrimary Infertility ??
Secondary Infertility ??
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Average Conception Rates% of Couples Length of time
20% Conceive within 1 month60% Conceive within 6 months75% Conceive within 9 months80% Conceive within 12 months90% Conceive within 18 months
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Causes of Infertility Multiple factors 20%
Male factors 40% Female factors 40%
Ovulatory factor 15-20%Peritoneal factor 40%
Uterine-tubal factor 30%Cervical factor 5-10%
Unexplained infertility 20%
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Aging and female infertility As age increases follicular phase
becomes shorter and estradiol begins to rise earlier
Increased rate of follicular atresia after 37-38
Increased rate of spontaneous miscarriage
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Aging and female infertilityAge Pregnancy
(1yr)Miscarriage
Rate20-25 90 9.7%26-30 85 10%31-35 75 11.5%36-40 65 21.4%>40 50 42.2%
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What’s age got to do with it?
Intercourse on most fertile day
50% achieve pregnancy age 19-2640% achieve pregnancy age 27-3430% achieve pregnancy age 35-39
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So what’s so hard??
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Parts is Parts Adequate numbers of healthy sperm (male factor)
Mature ovum released in predictable fashion (ovarian factor)
Cervix must capture, nuture and release sperm into uterus and tubes (cervical factor)
Fallopian tubes must have a functional anatomic relationship to facilitate ovum capture (peritoneal
factor) Fallopian tube must be patent and capable of
transfer (tubal factor) Uterus must be receptive to implantation and
supporting pregnancy (uterine factor)
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Male Factor Evaluation Physical exam
Environmental/occupational exposures Semen analysis
> 20 millionMotility > 50%Volume > 2mL
Morphology > 30% normal Endocrine evaluation if warranted
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Female Factor Infertility - Peritoneal Factors
Endometriosis
Pelvic Adhesions
Pregnancy rates after treatment as high as 75%
for mild disease and as low as 30% for severe disease
Diagnosis = Laparoscopy
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Hypothalamic-pituitary dysfunction Intracranial tumors
PCOS Ovarian abnormalities
Thyroid disease Androgen excess
Female Factor Infertility - Ovulatory Factors
Ovulation restored in 90% of cases due to endocrine factors. Other cases rely
on ovulation induction with medications
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Evidence of Ovulation
Basal body temperature Serum progesterone (mid-luteal Day19-22)
12 - 15 ng/mL considered evidence of ovulation Ovulation predictor kits (LH surge)
Ultrasound
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Basal Body Temperature Temperature first thing in the morning
Biphasic pattern suggestive of ovulation Common to have dip the day of ovulation Temperatures rise after ovulation due to
progesterone from corpus luteum If temperatures drop late in the luteal phase don’t waste money on a pregnancy
test!
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Female Factor Infertility - Uterine & Tubal Factors
Fibroids Intrauterine adhesions (Asherman’s)
Congenital malformations Tubal occlusion (PID most common)
Endometrial abnormalities
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Tubal Adhesions
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Mullerian Anomalies
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Anomaly Frequency Bicornuate uterus (37 percent)
Arcuate uterus (15 percent) Incomplete septum (13 percent)
Uterus didelphys (11 percent) Complete septum (9 percent) and
Unicornuate uterus (4.4 percent)
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Hysterosalpingogram Radiopaque dye through the cervix under x-ray watching dye fill uterus and
spill from tubes into peritoneal cavity
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Ultrasonography Non-invasive
3D contours of uterus and endometrium as well as ovaries
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MRI More distinct delineation of soft
tissue structures MR imaging has been shown to be
both sensitive and specific and is clearly less invasive than
laparoscopy, which was considered the gold standard for diagnosis of
anomalies.
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Structural abnormalities Abnormal mucous production
Female Factor Infertility - Cervical Factors
Evaluation should include post-coital test
Treatment includes intrauterine insemination
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Smoking and Female Fertility Interferes with gametogenesis,
fertilization & implantation Reduces estrogen levels
Nicotine alters FSH/LH release decreasing LH surge
Nicotine stimulates cortisol secretion Earlier menopause by 2-3 years
Fertility rates lower (30%)
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Smoking and Male Fertility Impaired sperm concentration,
motility & morphology Decreased libido
Combined with caffeine consumption increases number of non-viable
sperm
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Assisted Reproduction
IVF (in vitro fertilization) GIFT (gamate intra-fallopian transfer) ZIFT (zygote intra-fallopian transfer)
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IVF Ovarian stimulation with gonadotropins
Oocyte retrieval (36 hours after hCG) Oocyte culture - sperm added after 4-6
hours (50,000 per oocyte) 65-80% of mature oocytes will fertilize
Examined at the pro-nuclear stage Cryopreservation of unused embryos (two
thirds will survive freezing/thawing)
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IVF Embryo transfer 8-10 cell stage (72-
80 hours after retrieval) Multiple pregnancy rate 35%
Rise in hCG indicates pregnancy while drops indicate a failed cycle