Treatment of Recurrent Pregnancy Loss in PCOS Patients

Preconception Management Strategy

The American College of Physicians recommends weight loss of at least 5% body weight through lifestyle modification as the foundational treatment for women with PCOS experiencing recurrent pregnancy loss, followed by metformin to improve insulin sensitivity and reduce miscarriage risk, particularly in those with insulin resistance or obesity 1, 2
Loss of just 5% of initial body weight significantly improves both metabolic and reproductive abnormalities, including pregnancy outcomes in PCOS, according to the American Family Physician 1, 2
Target a 30% energy deficit or 500-750 kcal/day reduction through any balanced dietary approach that creates an energy deficit, as recommended by the Praxis Medical Insights 3, 2
Implement regular exercise programs, which show positive effects even without weight loss, as suggested by the American Family Physician 1, 2

Metformin improves insulin sensitivity, reduces ovarian androgen production, and appears safe during pregnancy, making it the primary pharmacological option for reducing miscarriage risk in PCOS, according to the Praxis Medical Insights 2
The American Diabetes Association supports metformin use to improve insulin sensitivity and reduce metabolic risk factors 3

Use clomiphene citrate as first-line ovulation induction, with 80% ovulation rate and 50% conception rate among those who ovulate, as recommended by the American Family Physician 1, 2
If clomiphene fails, use low-dose gonadotropin therapy rather than high-dose to minimize ovarian hyperstimulation risk, as suggested by the American Family Physician 1

Provide preconception counseling about increased pregnancy risks specific to PCOS, as recommended by the Praxis Medical Insights 2
Monitor blood pressure, kidney function, and proteinuria regularly throughout pregnancy, as suggested by the Praxis Medical Insights 2
Prescribe low-dose aspirin from week 12 to week 36 to reduce preeclampsia risk, according to the Praxis Medical Insights 2

Do not neglect metabolic screening even in normal-weight PCOS patients, as insulin resistance can occur independent of obesity, as recommended by the Praxis Medical Insights 3
Do not use thiazolidinediones in pregnancy, as their effects on early pregnancy are poorly documented compared to metformin, as suggested by the American Family Physician 1
Do not exceed recommended clomiphene dosage and duration, as recommended by the Praxis Medical Insights 3
Do not delay lifestyle intervention—it must be implemented first as the foundation, not as an afterthought, according to the Praxis Medical Insights 2

Laparoscopic ovarian drilling may reduce miscarriage rates but has undetermined benefit according to ACOG, as reported by the American Family Physician 1
Inositol shows promise but lacks specific ACOG recommendations for pregnancy use in PCOS, according to the Praxis Medical Insights 4
GLP-1 agonists (semaglutide, liraglutide) show promise for weight reduction when combined with lifestyle interventions, though pregnancy-specific data are limited, as suggested by the Praxis Medical Insights 3