Table 1 Patient characteristics and clinical outcomes in 1,016 infants hospitalized for bronchiolitis.
Variables | n = 1,016 |
|---|---|
Demographics | |
Age (month), median (IQR) | 3.2 (1.6–6.0) |
Female sex | 406 (40.0) |
Race/ethnicity | |
Non-Hispanic white | 430 (42.0) |
Non-Hispanic black | 239 (23.5) |
Others | 347 (34.2) |
Medical history | |
Prenatal maternal smoking | 147 (14.7) |
Gestational age (week) | |
32–33 | 35 (3.4) |
34–36 | 151 (14.9) |
37–39 | 417 (41.0) |
40–41 | 391 (38.5) |
≥ 42 | 22 (2.2) |
Birth weight (kg) | |
0–1.3 | 3 (0.3) |
1.4–2.2 | 61 (6.0) |
2.3–3.1 | 343 (33.9) |
≥ 3.2 | 604 (59.7) |
Postnatal ICU admission | 167 (16.4) |
Previous hospital admission | 162 (16.0) |
Previous ICU admission | 17 (1.7) |
Previous breathing problems (count) | 32 (3.2) |
0 | 810 (79.7) |
1 | 160 (15.7) |
2 | 46 (4.5) |
History of eczema | 149 (14.7) |
Parent-reported symptoms at home | |
Poor feeding | 32 (3.2) |
Cyanosis within 24 h | 92 (9.1) |
Apnea | 131 (12.9) |
Apnea within 24 h | 86 (8.5) |
Duration of symptom (\(\le\) 24 h) | 53 (5.2) |
Signs and symptom at ED | |
Vital signs at presentation | |
Temperature (F), median (IQR) | 99.4 (98.8–100) |
Pulse rate (bpm), median (IQR) | 162 (150–176) |
Respiratory rate (per min), median(IQR) | 48 (40–60) |
Use of supplemental oxygen (%) | 51 (5) |
Oxygen saturation level (%) at room air (IQR) | 96 (94–98) |
Oxygen saturation level (%) with the use of supplemental oxygen (IQR) | 98 (95–100) |
Wheeze | 602 (62.3) |
Severity of retraction | |
None | 192 (19.6) |
Mild | 431 (43.9) |
Moderate/severe | 358 (36.5) |
Apnea | 56 (5.5) |
Dehydration | 392 (39.5) |
Virology | |
RSV | 821 (80.8) |
Length of hospital stay (days), range | 0–60 |
Clinical outcomes | |
Positive pressure ventilation usea | 55 (5.4) |
Intensive treatment useb | 163 (16.0) |
