IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-12-1-45903 Original Research Paper Effect Of Sildenafil Citrate In Pregnant Women With High Resistance Doppler Velocimetry Study- A Prospective Interventional Study. Srilakshmi Dr. Dr. M.Tripura Sundari Dr. January 2023 12 1 01 02