Abstract:Analysis of lower urinary tract function with an extension of standard renography with 123I-hippurate was carried out in 199 children. Maximum bladder capacity, voiding and residual bladder volumes, average and maximum urine flow rates and urine flow patterns were estimated. The index of urine transport (IUT), representing the relationship between urine flow rate and bladder volume, was introduced as a measure of outflow capability. Of 129 children without evidence of outflow obstruction, 90% had a normal urin… Show more
“…The definitions of normal flow curve are similar in most articles, which are bell-shaped or arc-shaped, approximately symmetrical, uninterrupted, and with no rapid amplitude changes. [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][20][21][22][23] ICCS specifies in children the bell-shaped curve should be regardless of volume voided. 5 Nishimoto et al 3 suggest quantitative definition using values for the parameters noted above (Q max /T v ≥ 0.78, 0.32 ≤ TQ max / T v ≤ 0.54, Q ave /Q max < l.59).…”
This survey provides an overview of flow shape descriptors and their definitions. We suggest it is clearer to use only descriptors that describe shape alone, that is, normal, fluctuating, intermittent, and plateau, with comments on symmetry and Q .
“…The definitions of normal flow curve are similar in most articles, which are bell-shaped or arc-shaped, approximately symmetrical, uninterrupted, and with no rapid amplitude changes. [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][20][21][22][23] ICCS specifies in children the bell-shaped curve should be regardless of volume voided. 5 Nishimoto et al 3 suggest quantitative definition using values for the parameters noted above (Q max /T v ≥ 0.78, 0.32 ≤ TQ max / T v ≤ 0.54, Q ave /Q max < l.59).…”
This survey provides an overview of flow shape descriptors and their definitions. We suggest it is clearer to use only descriptors that describe shape alone, that is, normal, fluctuating, intermittent, and plateau, with comments on symmetry and Q .
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