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Case mix, outcome and activity for admissions with primary or secondary reason for admission to ICU of asthma |
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| All (n = 2152) |
Mechanically ventilateda (n = 1223) |
Not mechanically ventilateda (n = 929) |
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| Case mix |
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| Age (mean ± SD; years) |
43.6 ± 19.2 |
47.4 ± 18.6 |
38.6 ± 18.8 |
| Sex (% male) |
33.2 |
34.8 |
31.0 |
| Steroid treatment during previous 6 months (%) |
14.1 |
13.9 |
14.3 |
| CPR within 24 hours before ICU admission (%) |
8.0 |
12.4 |
2.0 |
| Neurological insult during the first 24 hours (%) |
10.3 |
17.0 |
1.5 |
| Highest heart rate (mean ± SD; beats/min) |
133 ± 21.8 |
134 ± 21.9 |
132 ± 21.7 |
| Highest nonventilated respiratory rate (mean ± SD; breaths/min) |
30 ± 10.3 |
26 ± 9.8 |
32 ± 9.9 |
| Lowest PaO2 (median [IQR]; kPa) |
10.9 (9.3–13.4) |
10.7 (9.2–12.9) |
11.3 (9.4–14.3) |
| pH from ABG with lowest PaO2 (median [IQR]) |
7.37 (7.29–7.42) |
7.34 (7.25–7.40) |
7.40 (7.35–7.44) |
| PaCO2 from ABG with lowest pH (median [IQR]; kPa) |
6.9 (5.2–9.5) |
8.2 (6.3–10.7) |
5.3 (4.5–6.6) |
| Acute Physiology Score (mean ± SD)b |
11.0 ± 5.5 |
12.5 ± 5.7 |
8.6 ± 4.2 |
| APACHE II score (mean ± SD)b |
13.8 ± 6.6 |
15.7 ± 6.7 |
11.0 ± 5.2 |
| Outcomec |
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| Mortality in CMP unit (n [%]) |
133 (6.3) |
123 (10.3) |
10 (1.1) |
| Mortality in any hospital (n [%]) |
199 (9.8) |
177 (15.4) |
22 (2.5) |
| Activity |
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| Stay in CMP unit (median [IQR]; days) |
1.5 (0.7–3.5) |
2.6 (1.3–6.7) |
0.8 (0.5–1.5) |
| Stay in any hospital (median [IQR]; days) |
8 (5–15) |
10 (6–19) |
6 (4–10) |
| Transfers in from another hospital (%) |
11.8 |
17.4 |
4.4 |
| Readmissions within the same hospital stay (%) |
2.3 |
2.1 |
2.6 |
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aDuring first 24 hours after admission to the Case Mix Programme (CMP) unit. b248 (11.5%) admissions aged <16 years or staying <8 hours in the intensive care unit (ICU) excluded from the calculation of Acute Physiology Score and Acute Physiology and Chronic Health Evaluation (APACHE) II score. cExcluding 50 (2.3%) readmissions to ICU within the same hospital stay. ABG, arterial blood gas; IQR, interquartile range; PaO2, arterial oxygen tension; SD, standard deviation. | |||
Gupta et al. Critical Care 2004 9(Suppl 3):S14 doi:10.1186/cc3746 |
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