pcos
TRANSCRIPT
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Polycystic Ovarian Syndrome & fertility
Dr sundar narayananM.D, DIP LAP, DIP ART, DIP US
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INTRODUCTION
• The polycystic ovary syndrome is the most common metabolic abnormality in young women today of reproductive age.
• Most common cause of infertility in women
• Studies of PCOS in India reported a prevalence of 3.7% to 22.5%, upto 36% prevalence in adolescents
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Etiology • A large number of genomic variants has been
associated with PCOS and many of these associations have not been replicated in different populations.
• It is believed that the picture is of a multigenic etiology in which non-genetic factors such as diet and exercise have strong influence on the development of the disorder
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PCOSSyndrome characterized by• Oligoammenorhoea / amenorrhoeaLaboratory criteria of
• Hyperandrogenemia• Hyperinsulinemia
• Polycystic ovaries on USG
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Diagnostic criteria
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• Classic syndrome originally described by Stein and Levanthal (1935)
• Hyperandrogenism• Menstrual irregularity• Polycystic ovaries• Central adiposity
• Few of these original features are now considered consistent findings in PCOS
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NATIONAL INSTITUTES OF HEALTH AND CHILD HEALTH AND HUMAN DEVELOPMENT(1990)
• Chronic anovulation• Hyperandrogenemia• Clinical signs of hyperandrogenism• Exclusion of other androgenic disorders
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ROTTERDAM CRITERIA (2003)• 2 out of 3
• Polycystic ovaries (>12 peripheral follicles or increased ovarian volume >10cm3)
• Oligo- or anovulation• Clinical and/or biochemical signs of
hyperandrogenism• And exclusion of other etiologies such as
hypothyroidism, hyperprolactinemia, congenital adrenal hyperplasia, cushing syndrome, androgen secreting tumors
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AE-PCOS SOCIETY 2006• Hyperandrogenism-hirsutism and/ or
hyperandrogenemia• And• Ovarian dysfunction-oligo-anovulation and/
or polycystic ovaries• Exclusion of other androgen excess or
related disorders
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pathogenesis
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Pituitary –ovarian –Adrenal Inter action
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Abnormal Pituitary Function—Altered Negative Feedback Loop• Increased GnRH from hypothalamus• Excessive LH secretion relative to FSH
by pituitary gland• Ineffective suppression of the LH pulse
frequency by estradiol and progesterone
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• LH stimulated excessive androgen production • Intraovarian androgen excess results in
excessive growth of small ovarian follicles• Inhibition of follicular maturation • Thecal and stromal hyperplasia
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Pathogenesis: Hyperandrogenism• Reduced sex-hormone-binding globulin
(SHBG) more free testosterone• Insulin insensitivity• Lipid abnormalities• Abdominal obesity• Symptoms of androgen excess
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HYPERANDROGENISM
• 50-90% patients have elevated serum androgen levels
• Causes hirsutism, acne, male pattern balding, alopecia
• Deepening voice, clitoromegaly
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Insulin resistance in PCOS:
• Insulin resistance in PCOS is independent of obesity• Increased risk for impaired glucose tolerance and
type 2 DM in PCOS women • Obese women with PCOS tend to be more insulin
resistant than normal-weight counterparts. • 30-40% prevalence of glucose intolerance• 7-10% prevalence of type 2 DM in PCOS women• Insulin resistance worsens over time
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ETIOLOGY OF INSULIN RESISTANCE
• Unknown largely.• Genetic link• Mutation of the insulin receptor gene in the
peripheral target tissues• Reduced tyrosine auto phosphorylation of the
insulin receptor.
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Pathogenesis: Insulin resistance• Excess insulin production and insulin
resistance• Favors anovulation, reduced SHBG, IGF-1 BP
and androgen excess • Metabolic syndrome• Abdominal obesity
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IR influencing Hypothalamic-Pituitary-Ovary Axis
Reference: Understanding polycystic ovary syndrome [Internet]. Available at: http://www.bpac.org.nz/BPJ/2008/April/polycystic.aspx. Accessed on May 06,2016.
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Insulin Resistance: Associated Conditions
Insulin Resistance
Type 2 diabetes
Hypertension
Impaired Glucose tolerance
Obesity (central)
Polycystic ovary diseaseHyperuricemia
Acanthosis Nigricans
Decreased Fibrinolytic Activity
Dyslipidemia
Atherosclerosis
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Clinical presentation
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Reference: Sirmans SM, Pate KA. Epidemiology, diagnosis, and management of polycystic ovary syndrome. Clin Epidemiol. 2014;6:1–3.
Clinical Presentation of Women with PCOS
Obesity
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OBESITY AND INSULIN RESISTANCE• > 50 % patients with PCOS are obese• > 80% are hyperinsulinemic and have insulin
resistance• Hyperinsulinemia contributes to
hyperandrogenism & associated hirsutism and menstrual irregularities.
• Even 2/3 of lean PCOS (normal BMI) have excessive body fat and central adiposity
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ASSOCIATED MEDICAL CONDITIONS
• Low HDL and high triglycerides• Sleep apnea• Nonalcoholic steatohepatitis• Metabolic syndrome—43% of PCOS patients (2
fold higher than age-matched population)• Elevated CRP and heart disease• Advanced atherosclerosis
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MENSTRUAL DYSFUNCTION• Oligo or amenorrhea typically begins in the
peripubertal period• Reduction in ovulatory events leads to
deficient progesterone secretion• Chronic estrogen stimulation of the
endometrium with no progesterone results in intermittent breakthrough bleeding or DUB
• Increased risk for endometrial hyperplasia and/or endometrial CA
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HIRSUTISM
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Hair & sebaceous Follicle Response to Hyperandrogenism
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Acne & baldness
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Male Type Hair Growth
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Ferriman Gallwey score Extent of terminal (coarse pigmented) hair growth at each of
the following 11 hormonally sensitive sites Upper lip Sideburn area Chin Jaw & Neck Upper back Lower back Chest Upper abdomen Lower abdomen Upper arms Thighs
Score of 6 or above used to define clinical hyperandrogenemia
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Modified Ferriman Gallwey score9 areas• Score 1-4• 0-absence of terminal hair• 4-extensive terminal hair growth
>8 - hirsutism
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Modified Ferriman Gallwey score
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Acanthosis nigricans
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Metabolic Syndrome• Personal or family history of DM• Obesity• Hyperinsulinemia• Hypertension• Atherogenic Dyslipidemia• Atherosclerosis• Hyperglycemia• The AACE have already included PCOS as an
important risk factor for diabetes and have recommended screening for DM by age 30 in all patients with PCOS.
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Laboratory investigations
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Hyperandrogenism
Laboratory features Elevated total testosterone
Most values in PCOS <150 ng/dl (if >200 ng/dl, consider ovarian or adrenal tumor)
Free testosterone assays not reliable yet Free androgen index > 4.5 (FAI= total testosterone x
100 /SHBG). Considered a better indicator
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DHEA-S Most normal or slightly high in PCOS If >800 mcg/dl, consider adrenal tumor
LH/FSH ratio Levels vary over menstrual cycle, released in
pulsatile fashion, affected by OCPs LH/FSH ratio >2 has little diagnostic sensitivity
and need not be documented
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Hyperinsulinemia• Fasting glucose level of 110-125 mg/dL
• Glucose level of 140-199 mg/dL after75 gm glucose challenge test
• Stimulated testing with OGTT may be more sensitive than fasting measurements
• Fasting glucose/insulin ratio (G/I) . A ratio < 4.5 has in general been shown to be > 90% sensitive
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ATP III Clinical Identification of the Metabolic Syndrome• Waist circumference:
• Women>88 cm (>35 in)• Triglycerides >150 mg/dL• HDL cholesterol:
• Women<50 mg/dL
• Blood pressure 130/ 85 mm Hg• Fasting glucose >100 mg/dL
Presence of any 2 of 5 criteria
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DIFFERENTIAL DIAGNOSIS1. Hyperprolactinemia/ hypothyroidism
• Prominent menstrual dysfunction• mild hyperandrogenism
2. Congenital Adrenal Hyperplasia• morning serum 17-hydroxyprogesterone
concentration greater than 200 ng/dL in the early follicular phase strongly suggests the diagnosis
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3. Ovarian and adrenal tumors• serum testosterone concentrations are always
higher than 150 ng/dL• adrenal tumors: serum DHEA-S concentrations
higher than 800 mcg/dL• LOW serum LH concentrations
4. Cushing’s syndrome5. Drugs: danazol; OCPs with high
androgenicity
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Polycystic Ovaries - USG
Criteria by ultrasound Increased ovarian area (>5.5 cm2)
or volume (>11 ml) w/ presence of >12 follicles measuring 2-9 mm in diameter
Polycystic ovaries not specific for PCOS
> 20% normal women have incidental polycystic ovaries
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Polycystic VS. Multicystic Ovaries• Polycystic ovaries
• Bilateral • At least 12 follicles• Follicular diameter
2 - 9 mm• Stroma increased
• Multicystic ovaries• Bilateral• Multiple cysts• Cyst diameter usually
> 10 mm• Stroma not increased
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OVARIAN ABNORMALITIES• Thickened sclerotic
cortex• Multiple follicles in
peripheral location• 80% of women with
PCOS have classic cysts
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PEARLY WHITE SMOOTH ENLARGED AND THICK WALLED OVARY ON LAPAROSCOPY
laparoscopy
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Gross Appearance of Ovaries
• Polycystic ovaries are enlarged andhave a smooth thickened capsule that isAvascular• On cut section, subcapsular follicles in variousstages of atresia are seen in the peripheral partof the ovary• The most striking ovarian features of PCOS ishyperplasia of the theca stromal cells surrounding
arrested follicles
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TREATMENT
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ADOLESCENT PCOS• Immediate/Acute issues
• Hirsutism• obesity• Regulation of menses
• Long-term issues• Insulin resistance• Cardiovascular risk• Obstructive sleep apnea• Malignancy risk
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Adolescent pcos - management
• Life style modification• Weight Reduction.• Diet management.• Hormone therapy
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Diet and Exercise• In patients with PCOS who are obese, endocrine-
metabolic parameters markedly improve after 4-12 weeks of dietary restriction.
• Their SHBG levels rise and free testosterone levels fall by 2-fold.
• Serum insulin and IGF-1 levels also decrease.• Weight loss in patients with PCOS who are obese
is associated with a reduction of hirsutism and a return of ovulatory cycles in 30% of women.
Moran LJ, Pasquali R, et all Treatment of obesity in polycystic ovary syndrome: a position statement of the Androgen Excess and Polycystic Ovary Syndrome Society. Fertil Steril. Dec 3 2008;
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Diet and Exercise• A moderate amount of daily exercise increases of levels
of IGF-1 binding protein and decreases IGF-1 levels by 20%.
• Modest weight loss of 2-5% of total body weight can help restore ovulatory menstrual periods in obese patients with PCOS.
• A daily 500-1000 calorie deficit with 150 minutes of exercise per week can cause ovulation.
• The AE-PCOS recommends lifestyle management as the primary therapy in overweight and obese women with PCOS for the treatment of metabolic complications.
Moran LJ, Pasquali R, et all Treatment of obesity in polycystic ovary syndrome: a position statement of the Androgen Excess and Polycystic Ovary Syndrome Society. Fertil Steril. Dec 3 2008;
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Metformin• Metformin therapy is considered the initial
intervention in most women with PCOS, particularly in those who are overweight or obese.
• Metformin improves many metabolic abnormalities in PCOS and may improve menstrual cyclicity and the potential for pregnancy.
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Metformin and hyperinsulinemia• This anti-diabetic drug improves insulin resistance and
decreases hyperinsulinemia in patients with PCOS.• Metformin also has a beneficial effect on metabolic
syndrome. • Decreases hepatic glucose production• Increases peripheral glucose uptake and utilization• Antilipolytic effect—reduces fatty acid concentrations
and reduces gluconeogenesis
Lord JM, Flight IH, Norman RJ. Metformin in polycystic ovary syndrome: systematic review and meta-analysis. BMJ. Oct 25 2003;327(7421):951-3. [Medline].
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Metformin and Anovulation
• Patients have a high likelihood of having ovulatory cycles while taking metformin.
• will restore ovulation and menses in > 50% of patients
• In addition, pretreatment with metformin has been shown to enhance the efficacy of clomiphene for inducing ovulation.
• N-acetylcysteine may also enhance the effect
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METFORMIN DOSING• The usual starting dose is 500 mg given
orally twice a day.• Target—1500-1800 mg per day• Clinically significant responses not regularly
observed at doses less than 1000 mg per day• Sustained release formulations taken after
dinner have fewer side-effects.
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Adverse effects• Diarrhea, nausea, vomiting, flatulence,
indigestion, abdominal discomfort• Caused by lactic acid in the bowel wall• Minimized by slow increase in dosage
• Lactic acidosis—rare• Avoid in CHF, renal insufficiency, sepsis• Discontinue for procedures using contrast (HSG)• Temporarily suspend for all surgical procedures
that involve fluid restriction
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Oligomenorrhea• Combination estrogen-progestin pill first line
when fertility is not desired• Decrease in LH secretion and decrease in androgen
production• Increase in hepatic production of sex-hormone
binding globulin• Decreased bioavailablity of testosterone• Decreased adrenal androgen secretion• Regular withdrawal bleeds• Prevention of endometrial hyperplasia
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Hormone therapy for Adolescent Patients• Combined OCPs containing estrogen and
Progesterone given cyclically help in controlling menstrual problem , hirsutism and acne
• Periodic progesterone withdrawal• Medroxyprogesterone 10 mg/day x 7-10 days
• Anti androgens• Mechanical hair removal
Plucking/shaving/electrolysis/laser
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Pharmacological Profile of natural progesterone and synthetic progestrogens Drug Progestrongi
c activityAnti androgenic activity
Antimineralocorticoid activity
Glucocorticoid activity
Progesterone(Natural) + ( + ) + -Drosperinone + + + -Cyproterone Acetate
+ + - ( + )
Desogestrel + - - -Dienogest + + - -Gestodene + - ( + ) -Levonorgestrel + - - -Norgestimate + - - -
+ Effct (+) negligible
- No effct
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Long-Term Issues• Cardiovascular Risk
• Increased prevalence of HTN• Dyslipidemia (↑ TG, ↓ HDL, ↑ LDL)• Predisposition to macrovascular disease and
thrombosis• Multidisciplinary management
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Long-Term Issues• Obstructive Sleep Apnea
• 30-fold increased risk of OSA, not explained by obesity alone.
• Insulin resistance strongest predictor of OSA (not BMI, age, testosterone)
• Consider polysomnography if at risk
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Long-Term Issues• Risk for malignancy
• 3 fold increased risk endometrial carcinoma in PCOS
• Increased risk of ovarian and breast cancer
• Warrants regular screening
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MESSAGE TO THE YOUNG GIRLSYoung girls should be advised to adopt healthy life style in the form of balanced diet having locally available food articles like all cereals, pulses, green leafy vegetables, seasonal fruits, fish, jaggery and dairy products in appropriate amount.They should avoid soft drinks, chocolates and junk food.
They should be advised to play out door games and do regular physical exercises like cycling, skipping, jogging, swimming etc.
This will go long way to prepare a girl to let her develop as a perfect adolescent with minimal menstrual dysfunction..
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Infertility in pcos
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PCOS & INFERTILITY
Reference: Sirmans SM, Pate KA. Epidemiology, diagnosis, and management of polycystic ovary syndrome.Clin Epidemiol. 2014;6:1–3.
Approx. 85–90% of women with oligomenorrhea have PCOS
>80% of women having symptoms of androgen
excess present with PCOS
Hirsutism occurs in up to 70% of women with PCOS
Infertility is seen in 40% of women with PCOS
Spontaneous abortion is seen more frequently in PCOS with incidences
ranging from 42–73%
Approx. 90–95% of anovulatory women reporting to infertility clinics have PCOS
Approx. 15–30% of adult women having PCOS manifest acne
30–40% of women with amenorrhea will have PCOS
PCOS
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Ref : Hum Reprod 2004: 19
Ovulation
Fertilization
Implantation
Fetal Viability
Healthy Live born
Poor Oocyte Quality
?Effects gestationalDiabetes and hypertension
Endometrial Abnormality
Effects Hyperinsulinemia
PCOS and infertility
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Treatment modalities
• Lifestyle Modifications • Insulin Sensitizing Agents • Clomiphene Citrate • Gonadotrophins • Laparoscopic Ovarian Drilling • Ovulation Induction and IUI • IVF
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Consensus on infertility treatment related to PCOS
FIRST LINECLOMIPHENE CITRATE
SECOND LINELOD/GONADOTROPINS
THIRD LINEIVF
The Thessaloniki ESHRE/ASRM-Sponsored PCOS Consensus Workshop Group March 2–3, 2007, Thessaloniki, Greece. Human Reproduction 2008
RESISTANCE
RESISTANCE
FAILURE
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INFERTILITY TREATMENT• Clomid
• 50 mg from cycle days 2-6 for 3 months• Incremental 50 mg every 3 months up to 150 mg.• Most women with PCOS do not respond to normal
dose—20% ovulation rate!• Clomid: 80% will ovulate, 50% will conceive• Combined metformin+clomiphene better
conception rate compared to clomiphene alone• FSH injections
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Letrozole• Release the pituitary/hypothalamic axis from
the estrogenic negative feedback, increase Gnt secretion, stimulate ovarian follicle development
• Locally in the ovary: increase the follicular sensitivity to FSH
• Letrozole associated with fewer birth defects than clomiphene but this is not statistically significant.
Tulandi T. Fertil Steril 85:1761, 2006
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GonadotrophinsChronic low-dose regimen• Starting dose: 37.5 IU • Duration of starting dose:14 d • The weekly dose increment of 37.5 IU till
ovulation followed by IUI.Overall ovulation induction (CC/ CC+ GN/chronic low dose regimen) with IUI results in singleton live birth with marked reduction of OHSS
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Adjuvants
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Surgical Management
• Should be used only as a method of induction of ovulation not for treatment of PCOS symptoms.
• Laparoscopic drilling using electrocautery or laser is universally accepted procedure now, aimed with the goal of creating focal areas of damage in the ovarian cortex and stroma.
• LOD is usually effective in 50% of women and additional ovulation induction may be required.
• Potential complications include formation of adhesions & long-term effects of tissue damage on ovarian function.
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Surgical induction of ovulationWedge resection
by LTLOD
Publications 18 11
Patients 1766 729
Ovulation 74.6 84.2
Pregnancy 58.8 55.7
Adhesions Moderate to severe
Minimal to mild
From Urman and Yakin JRM 2006
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IVF• Failure to conceive on Gonodotrophin therapy
alone/ IUI after 6 ovulatory cycles (Araki, 2011) • Associated male factor or tubal factor infertility • Failure of wt reduction, antiestrogen therapy or
LOD in long standing infertility & advanced age, Gnt may be omitted and replaced by ovarian stimulation and IVF (Eijkemans et al., 2005)
• High response to FSH despite low dose to prevent OHSS and to eliminate the chances of multiple pregnancy
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Challenges of treating infertility with IVF in the PCOS patient• Propensity for an exaggerated ovarian response• Difficulties in titrating gonadotropin dose• Increased risk of cycle cancellation• Increased incidence of early and late OHSS• Increased risk of spontaneous pregnancy loss
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PreIVF considerations• Weight loss in overweight women• Metformin• LOD• All these above measures increase IVF
outcome and reduces incidence of OHSS.
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Cycle management in the PCOS patient• Antagonist protocol preferred• Careful titration of the gonadotropin dose• Measures to prevent OHSS
• GnRHa for triggering final oocyte maturation• Single Blast transfer • Cryopreservation of all embryos (segmentation of IVF)• Cabergoline
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Conclusions• PCOS patient is the most difficult to treat
with IVF• Cycle cancellation rates and risk of OHSS are
higher• Fine tailoring of ovarian stimulation is
necessary to avoid complications• Treating physicians should be well aware of
the difficulties and remedies/solutions
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Recommendations
ACOG 2009
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The following recommendations and conclusions are based on good and consistent scientific evidence (Level A):
• An increase in exercise combined with dietary change has consistently been shown to reduce diabetes risk comparable to or better than medication.
• Improving insulin sensitivity with insulin-sensitizing agents is associated with a decrease in circulating androgen levels, improved ovulation rate, and improved glucose tolerance.
• The recommended first-line treatment for ovulation induction remains the antiestrogen clomiphene citrate.
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The following recommendations and conclusions are based on limited and inconsistent scientific evidence (Level B):
• Women with a diagnosis of polycystic ovary syndrome (PCOS) should be screened for impaired glucose tolerance with a fasting glucose level followed by a 2-hour glucose level after a 75-g glucose load.
• Women with PCOS should be screened for cardiovascular risk by determination of BMI, fasting lipid and lipoprotein levels, and metabolic syndrome risk factors.
• There may be an increase in pregnancy rates by adding clomiphene to metformin, particularly in obese women with PCOS.
• If clomiphene citrate use fails to result in pregnancy, the recommended second-line intervention is either exogenous gonadotropins or laparoscopic ovarian surgery.
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The following recommendations and conclusions are based primarily on consensus and expert opinion (Level C):
• Combination low-dose hormonal contraceptives are most frequently used for long-term management though no evidence favors the same.
• A chronic low-dose step up gonadotropin regimen is still recommended in women with PCOS though better protocols are available now a days.
• There is no clear primary treatment for hirsutism in PCOS though anti androgens and or laser may be helpful.
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Conclusions• The comprehensive management of PCOS
requires:• A patient-centered approach• Significant time dedicated to thorough education and
counseling• Prudent use of referrals and local resources to tackle
metabolic syndrome.• Remaining up-to-date on newest advances in the
literature.• Improvement in health of the PCOS woman in pregnancy
could help “prevent” disease in the next generation
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Thank you