Effect of Increased BMI on Efficacy of Labor Analgesia

Exclusion Criteria

• •Age \< 18 years
• •BMI \< 40 kg/m²
• •History of venous thromboembolism or arterial disease (e.g., DVT, PE, angina, MI, or stroke)
• •Severe active lung, cardiovascular, renal, or liver disorders; autoimmune disease; or hemoglobinopathies
• •Hereditary or acquired thrombophilia (e.g., Factor V Leiden mutation or antithrombin deficiency)
• •In utero fetal demise (IUFD)
• •Failed operative vaginal delivery
• •Cesarean for the second twin or multiple pregnancies (triplets or higher)
• •IVF pregnancy
• •Intraoperative bleeding\>1500mL
• •Emergency cesarean section (Category I)
• •Presence of large uterine fibroid ≥10 cm.