Assessment of menstrual blood loss in women referred for endometrial ablation

We measured menstrual blood loss in 54 women preferred for endometrial ablation on account of dysfunctional uterine bleeding. Patients' subjective assessment of blood loss was assessed by visual analogue scores and by pictorial blood loss assessment charts. The former were not related to measured blood loss but the charts were a useful test for menorrhagia, with 88% sensitivity, 52% specificity and a false positive rate of 59%.