PCOS and Ovulatory Dysfunction: Diagnosis Through Stepped Treatment

WHO's pathway is stepwise: rule out anovulation with day-21 progesterone above 10 ng/ml, rule out tubal block with an HSG, rule out uterine factors with 2D or 3D ultrasound, and test semen; if all are normal, try timed intercourse with clomiphene for 3 to 6 months, then 2 to 3 cycles of IUI (up to 6 if needed), which Dr. Pai's practice sees succeed in about 30% of cases, before moving to IVF. He named failure to conceive as IVF's biggest drawback, though across three attempts roughly 80 to 90% of patients achieve pregnancy, and frozen-embryo banking means most repeat cycles no longer require re-stimulation. In his estimate, about 80% of patients never need IVF at all if laparoscopy, hysteroscopy, ultrasound and a competent IUI lab are available; only 20% require it.

Age is the dominant factor. Citing the US SART and UK HFEA registries, Dr. Pai gave approximate success rates by age band: under 35 about 40%, 35 to 37 roughly 35 to 40%, 37 to 39 about 25 to 30%, 39 to 41 about 15%, and over 41 about 5 to 10%, because genetic abnormality rates in eggs rise with age even when embryos form. Low ovarian reserve, with AMH sometimes as low as 0.3 to 0.4 ng/ml, is the other major factor; for patients who decline donor eggs, he tries platelet-rich plasma injected under ultrasound or laparoscopic guidance and, in some cases, stem-cell therapy, using the laparoscopy to also rule out genital tuberculosis, which can itself lower ovarian reserve.

This is usually a fungal infection, and both partners need treatment, along with lactobacillus supplements. Because a wet mount or culture can miss organisms such as Trichomonas, Chlamydia or Mycoplasma, Dr. Pai often gives combination therapy (an antifungal such as fluconazole plus an antibiotic such as azithromycin) with local clotrimazole cream, and screens for diabetes, since fungal infections are common in patients who are obese or diabetic.

If antibody titres are very high, management becomes difficult. Where it is legally available, Dr. Pai suggested surrogacy carried by an Rh-negative surrogate as a way to avoid maternal antibody-mediated complications and repeated interventions such as cord blood transfusion, rather than risking complications like kernicterus in the baby.

Not universally. Dr. Pai calls clomiphene his master drug and reserves letrozole specifically for PCOS patients. His practice stratifies by AMH and antral follicle count: normal responders (AMH 2 to 3.5 ng/ml, AFC 7 to 15) receive clomiphene or clomiphene plus HMG; poor responders (AMH under 1.5, AFC under 7) also receive clomiphene plus HMG; hyper-responders with PCOS (AMH over 3.5, AFC over 15) receive letrozole; pure HMG is reserved for IVF cycles.

An antral follicle count above 15, showing a necklace-chain pattern of small follicles across both ovaries on ultrasound, combined with an AMH above 3.5 nanograms per ml, is the working definition of PCOS.

Weight reduction alone can lift success rates by roughly 5 to 10 percent, and BMI should ideally sit below 27.

Metformin is titrated up slowly, starting from one 500 mg tablet after food and rising to a ceiling of 2,000 to 2,500 mg a day split between morning and evening, to manage gastrointestinal side effects.

Severe obesity, above a BMI of 35, may warrant bariatric surgery, which now costs around 4,000 dollars in India and can produce weight loss of 30 to 40 kilos, enough that some patients conceive without any further fertility treatment.

Where clinicians once placed around 20 punctures per ovary, only 3 to 4 are now used, followed by six months of observation, during which many patients conceive spontaneously.