Table 2.

ED Presentation and Clinical Course of Children Treated in the ED for Bronchiolitis and Discharged to Home, According to Unscheduled Visits Within 2 Weeks of ED Discharge

	No Unscheduled Visits (n = 596)	Unscheduled Visits (n = 121)	p-value
Respiratory rate (breaths/min)	43 ± 13	46 ± 15	0.10
Respiratory rate < normal for age*	48	46	0.68
Retractions			0.04
None/mild	91	84
Moderate/severe	9	16
Oxygen saturation on room air	98 ± 2	97 ± 2	0.23
Lowest room air oxygen saturation	97 ± 2	97 ± 3	0.07
Presence of cough	83	87	0.35
Presence of wheeze	76	76	0.92
Number of inhaled beta-agonist  treatments over entire ED stay	1 (1–2)	1 (1–2)	0.73
Number of epinephrine  treatments over entire ED stay	0 (0–0)	0 (0–0)	0.35
Given corticosteroids	19	17	0.56
Given antibiotics	11	8	0.47
Any laboratory tests	64	63	0.74
Oral intake			0.11
Adequate oral intake	84	84
Inadequate oral intake	10	6
Unknown	6	10
Viral test results†
RSV positive	15	22	0.04
Influenza A positive	1	1	0.99
Influenza B positive	0.2	0	0.65
Adenovirus positive	0.2	0	0.65
Abnormal x-ray findings‡	60	46	0.06
ED length of stay (minutes)	165 (123–231)	180 (130–280)	0.78
Received discharge medication	93	89	0.11

Values are reported as mean (±SD), percentages, or median (IQR).

IQR = interquartile range; RSV = respiratory syncytial virus.

^*Normal values for age groups (in months): age 0–1.9, 45 breaths/min; age 2–5.9, 43 breaths/min; age 6–11.9, 40 breaths/min; and age 12–23.9, 40 breaths/min.

^†Among 255 children with viral testing.

^‡Abnormal x-ray findings include atelectasis, infiltrate, hyperinflated, or other findings (n = 330 children with chest x-ray).