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Characteristics of patients who had normal or delayed gastric emptying on 13C-octanoic acid breath test |
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| Delayed gastric emptying (n = 79) |
Normal gastric emptying (n = 53) |
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| Age (years) |
57.8 ± 2.2a |
52.2 ± 2.0 |
| Gender (male/female) |
58:21 |
37:16 |
| Body mass index (kg/m2) |
27.1 ± 0.8 |
27.9 ± 0.9 |
| Days in ICU prior to study |
7.3 ± 0.6 |
7.4 ± 0.7 |
| APACHE II score |
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| Admission |
24.6 ± 0.6 |
22.9 ± 0.7 |
| Study day |
17.4 ± 0.4 |
17.8 ± 0.9 |
| Enteral feeding rate (ml/hour) |
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| Prior to breath testing |
44 ± 4a |
61 ± 5 |
| After breath testing |
55 ± 4a |
60 ± 4 |
| Blood glucose level (mmol/l) |
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| Admission |
9.7 ± 0.9b |
7.8 ± 0.2 |
| Study day |
8.5 ± 0.5 |
7.7 ± 0.3 |
| Biochemistry |
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| Albumin (g/l) |
23.8 ± 0.6 |
23.3 ± 0.9 |
| Bilirubin (μmol/l) |
24.2 ± 4.0a |
12.0 ± 1.5 |
| White cell count (× 109/l) |
12.3 ± 0.6 |
13.1 ± 0.7 |
| Serum creatinine (mmol/l) |
0.148 ± 0.02 |
0.113 ± 0.01 |
| Medications, % (n) |
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| Opioid ± benzodiazepine |
87% (67) |
81% (43) |
| Propofol |
63% (50) |
57% (30) |
| Inotropes |
66% (52) |
73% (39) |
| Mechanical ventilation |
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| SIMV/pressure support (n) |
49:30a |
25:28 |
| Fraction of inspired oxygen |
0.49 ± 0.02 |
0.46 ± 0.02 |
| Positive end-expiratory pressure (cm H2O) |
6.4 ± 0.4 |
6.8 ± 0.4 |
| Peak inspiratory pressure (cm H2O) |
24.6 ± 1.0 |
24.2 ± 1.2 |
| Length of stay (days) |
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| In ICU |
21.0 ± 1.6b |
13.8 ± 1.2 |
| In hospital |
37 ± 2b |
28 ± 3 |
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aP < 0.05, versus normal gastric emptying. bP < 0.01, versus normal gastric emptying. APACHE II, Acute Physiology and Chronic Health Evaluation II; ICU, intensive care unit; SIMV, synchronised intermittent mandatory ventilation. | ||
Nguyen et al. Critical Care 2007 11:R16 doi:10.1186/cc5685 |
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