“…In their study Lorusso et al, (2005); Kosmas et al (2007) shows that high overall pregnancy rates can be achieved when ETs are performed in patients with an empty bladder, whether they are performed under ultrasound guidance or not. Also, studies that utilize transvaginal ultrasound, requiring an empty bladder during embryo transfer, show an improvement in the pregnancy rate (Anderson et al, 2002;Kojima et al, 2001;Lindheim et al, 1999) suggesting that a full bladder required for UGET is not a confounder for improving outcome.…”