Rectal diameter measured by transabdominal ultrasonography for monitoring treatment response in children with functional constipation

doi:10.5409/wjcp.119251

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World Journal of Clinical Pediatrics

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2219-2808

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Copyright: ©Author(s) 2026. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial (CC BY-NC 4.0) license. No commercial re-use. See permissions. Published by Baishideng Publishing Group Inc.

World J Clin Pediatr. Dec 9, 2026; 15(4): 119251
Published online Dec 9, 2026. doi: 10.5409/wjcp.119251

Table 1 Demographic data and characteristics of children with functional constipation (n = 44), n (%)/median ± SD/median (interquartile range)

Variables	Total (n = 44)	Group A (RD < 3 cm) (n = 29)	Group B (RD ≥ 3 cm) (n = 15)	P value
Age (months)	50.50 (28.00-92.50)	47 (24.00-93.00)	54 (35.00-60.00)	0.699
Age 6 months to 4 years	21 (47.73)	15 (51.72)	6 (40.00)	0.460
Sex (female)	29 (65.91)	19 (65.52)	10 (66.67)	0.939
Weight (kg)	15.35 (11.60-25.90)	14.60 (11.50-26.30)	16 (12.20-21.40)	0.736
Height (cm)	99.50 (88.50-125.25)	97 (88.00-125.50)	102 (90.00-110.00)	0.755
FC in family	26 (59.09)	18 (62.07)	8 (53.33)	0.576
Previous treatment for FC	20 (45.45)	11 (37.93)	9 (60.00)	0.163
Duration of FC (months)	19.50 (12.00-36.00)	12.00 (12.00-30.00)	24.00 (12.00-40.00)	0.356
Stool frequency at baseline (times per week)	2.13 ± 0.67	2.21 ± 0.73	1.97 ± 0.55	0.268
Stool consistency at baseline (times per week)	2.19 ± 0.82	2.19 ± 0.79	2.20 ± 0.90	0.969
Painful defecation (facial pain score 0-5)	3.61 ± 1.08	3.45 ± 1.07	3.93 ± 1.05	0.159
Bloating or flatulence	11 (25.00)	6 (20.69)	5 (33.33)	0.843
Abdominal pain	12 (27.27)	11 (37.93)	1 (6.67)	0.035
Anal fissure	18 (40.91)	12 (41.38)	6 (40.00)	0.930
Last time of defecation before USG (hour)
Baseline (n = 34)	25.50 (19.00-50.00)	24.00 (19.00-48.00)	30.00 (22.00-54.00)	0.413
Week 1 (n = 43)	20.00 (5.00-30.00)	20.00 (6.00-23.50)	18.50 (4.00-46.00)	0.728
Week 4	18.50 (4.50-23.50)	17.00 (5.00-24.00)	21.00 (4.00-24.00)	0.293
Week 8	19.00 (5.50-23.50)	19.00 (5.00-21.00)	19.00 (6.00-24.00)	0.717
Adequate fiber intake at week 1	5 (11.36)	3 (10.34)	2 (13.33)	0.767
Adequate water intake at week 1	15 (34.09)	9 (31.03)	6 (40.00)	0.552

FC: Functional constipation; USG: Transabdominal ultrasonography; RD: Rectal diameter.

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Citation: Tran DL, Pinyoying N, Sintusek P. Rectal diameter measured by transabdominal ultrasonography for monitoring treatment response in children with functional constipation. World J Clin Pediatr 2026; 15(4): 119251
URL: https://www.wjgnet.com/2219-2808/full/v15/i4/119251.htm
DOI: https://dx.doi.org/10.5409/wjcp.119251

Tran DL, Pinyoying N, Sintusek P. Rectal diameter measured by transabdominal ultrasonography for monitoring treatment response in children with functional constipation. World J Clin Pediatr 2026; 15(4): 119251 [DOI: 10.5409/wjcp.119251]

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