Table 4. Comparison of fluid balances of patients with bronchiolitis admitted to the PICU requiring and not requiring respiratory support escalation (RSE).

Variable	Patients did not require RSE ( n  = 130)	Patients required RSE ( n  = 34)	p -Value a
	Median [IQR]	Median [IQR]
At PICU admission
CFB (mL/kg)	20.2 [1.6, 88.0]	2.1 [−8.8, 48.7]	0.28
Net I/O (mL)	116.5 [14.6, 757.0]	16.0 [−45.0, 462.0]	0.37
FO%	2.0 [0.16, 8.8]	0.21 [−0.88, 4.9]	0.28
At 12 h
CFB (mL/kg)	24.5 [9.8, 44.3]	24.3 [3.5, 37.6]	0.49
Net I/O (mL)	177.2 [59.0, 355.0]	151.3 [18.0, 284.8]	0.56
FO%	2.4 [0.98, 4.4]	2.4 [0.35, 3.8]	0.49
At 24 h
CFB (mL/kg)	44.5 [24.1, 68.6]	46.3 [26.1, 67.0]	0.96
Net I/O (mL)	269 [140.0, 455.2]	300 [112.0, 595.1]	0.80
FO%	4.4 [2.4, 6.9]	4.6 [2.6, 6.7]	0.96
At 36 h
CFB (mL/kg)	64.3 [26.2, 97.8]	63.0 [43.1, 105.8]	0.64
Net I/O (mL)	344.0 [152.0, 668.0]	394.0 [212.0, 730.2]	0.62
FO%	6.4 [2.6, 9.8]	6.3 [4.3, 10.6]	0.64
At 48 h
CFB (mL/kg)	83.9 [52.1, 128.0]	85.1 [62.9, 111.9]	0.93
Net I/O (mL)	467.0 [287.0, 764.0]	457.0 [314.5, 806.5]	0.94
FO%	8.4 [5.2, 12.8]	8.5 [6.3, 11.2]	0.93
At 72 h
CFB (mL/kg)	122.3 [84.7, 152.4]	126.7 [101.5, 157.8]	0.86
Net I/O (mL)	590.0 [379.0, 978.0]	675.0 [405.0, 1080.0]	0.65
FO%	12.2 [8.5, 15.2]	12.7 [10.2, 15.8]	0.86
At 96 h
CFB (mL/kg)	147.8 [119.3, 159.7]	172.4 [136.4, 234.1]	0.74
Net I/O (mL)	780.0 [532.0, 1229.0]	828 [382.0, 1477.0]	0.87
FO%	14.8 [11.9, 16.0]	17.2 [13.6, 23.4]	0.74
At 120 h
CFB (mL/kg)	217.4 [187.0, 433.4]	199.8 [148.8, 251.0]	0.48
Net I/O (mL)	1,359.8 [760.0, 3,727.0]	1,059.0 [853.0, 1,883.0]	0.78
FO%	21.7 [18.7, 43.3]	20.0 [14.9, 25.1]	0.26

Abbreviations: %, percentage; CFB, cumulative fluid balance; FO%, percentage fluid overload; I, input; IQR, inter-quartile range; kg, kilograms; mL, milliliters; n , number of patients; O, output; PICU, pediatric intensive care unit.

^aKruskal-Wallis test.