Impact of patient position on filling phase of urodynamics in women

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This is a randomised cross-over study designed to access the effect of position on urodynamic investigation of women with urinary incontinence. Women were investigated in the supine and sitting positions. There was small, not statistically significant difference in total bladder volume. Total bladder volume was nearer to women's actual bladder capacity in the sitting position. There was no difference in bladder volume at first sensation or normal desire in both positions. There was a small, not statistically significant difference in bladder volume at strong desire and urgency. Women felt strong desire and urgency at lower bladder volumes in the sitting position. There was no clear patient preference for one position over the other.