Table 1.
Patient Characteristics and Stimulation Parameters
| Characteristic | Parameter |
|---|---|
| Sex | 1 female/3 male |
| Age, yr | 57 ± 10 |
| Height, cm | 176 ± 9 |
| Mass, kg | 95 ± 13 |
| Body mass index | 30 ± 3 |
| Smoker | 2+, 2− |
| Smoking history, pack-years* | 30 ± 52 |
| FVC, % predicted | 54 ± 19 |
| FEV1, % predicted | 54 ± 12 |
| Maximal inspiratory pressure, cm H2O | −62 ± 3 |
| Stimulation current, mA | 21 ± 4.0 |
| Total stimulations (train duration, 1 min; frequency, 0.5 Hz, 1.5-ms pulses) | 5.7 ± 2.1 |
| Esophageal temperature during stimulation, °C | 36 ± 1 |
| Intubation to first stimulation, min | 112 ± 34 |
| Intubation to biopsy, min | 281 ± 64 |
| Last stimulation bout to biopsy, min | 29 ± 1.5 |
| Intubation to extubation time, h | 25 ± 23 |
Data are mean ± standard deviation. Patients were undergoing elective cardiothoracic surgical procedures including aortic valve replacement, coronary artery bypass, aortic aneurysm repairs, or a combination of these procedures.
*
Smokers only.