Endometrial spiral artery Doppler parameters in unexplained infertility patients: is endometrial perfusion an important factor in the etiopathogenesis?

Abstract

According to Doppler parameters, unexplained infertility patients have high impedance blood flow in spiral arteries which means that peri-implantation blood flow in these patient is lower than fertile controls. These findings suggest that endometrial perfusion may have an important contribution to etiopathogenesis of unexplained infertility.