Does hydrosalpinx fluid cause an increase in endometrial peristalsis?
Ijland and co-workers have analysed endometrial wave-like activity in several investigations (Ijland et al., 1996). The wave-like activity was described by `the wave direction classification’, by which five types of endometrial movements are described, i.e. no activity during at least 3 min of observation, waves from cervix to fundus, waves from fundus to cervix, opposing waves starting from cervix and fundus at the same time, and random waves arising from various foci. The group investigated the relationship between endometrial wave-like activity and fecundability in spontaneous cycles (Ijland et al., 1997). They examined 33 women with unexplained infertility in 37 spontaneous cycles. Nine women conceived within the cycle studied. Endometrial activity increased from menstruation to ovulation and decreased during the luteal phase. The conception cycles showed the lowest overall activity throughout the cycle compared with the non-pregnant women. The overall activity was highest througho
