a disturbance in the oestrogen/progesterone ratio as a consequence of localised hypertension at the ovary , when the utero-ovarian arterial loop is occluded at tubal ligation , is proposed as a possible cause of oestrogen deficiency syndrome , dysfunctional uterine bleeding , and menorrhagia after tubal ligation .
C0014939
oestrogen
C0025323
menorrhagia