Research Article
Nocturnal Hypoventilation in the Patients Submitted to Thoracic Surgery
Table 1
The comparison of the patients without (group 0) and with (group 1) nocturnal hypoventilation during the postoperative period.
| | | Group 0 n = 58 | Group 1 n = 10 | | | Mean | SD | Mean | SD |
| | Age (years) | 63.8 | 7.9 | 65.1 | 6.4 | NS | | Weight (kg) | 85.0 | 19.4 | 93.3 | 13.9 | NS | | BMI (kg/m2) | 31.0 | 5.8 | 35.0 | 4.2 | =0.039 | | FEV1 (l) | 2.2 | 0.8 | 2.0 | 0.6 | NS | | FEV1 (% of predicted) | 88.1 | 18.7 | 85.8 | 22.8 | NS | | FVC (l) | 3.4 | 1.1 | 2.8 | 0.7 | NS | | FVC (% of predicted) | 105.7 | 16.5 | 94.5 | 24.9 | NS | | FEV1/FVC (%) | 67.5 | 10.3 | 73.4 | 8.1 | NS | | Preoperative PaO2 (mmHg) | 72.3 | 6.2 | 70.5 | 7.7 | NS | | Preoperative PaCO2 (mmHg) | 39.0 | 3.7 | 42.0 | 3.3 | =0.023 | | Preoperative HCO3 (mmol/l) | 25.2 | 1.9 | 25.9 | 2.5 | NS | | Preoperative pH | 7.42 | 0.04 | 7.41 | 0.03 | NS | | Preoperative SaO2 (%) | 94.4 | 1.5 | 93.7 | 2.0 | NS | | Postoperative PaO2 (mmHg) | 87.5 | 22.0 | 83.6 | 18.4 | NS | | Postoperative PaCO2 (mmHg) | 44.9 | 4.8 | 47.9 | 5.9 | NS | | Postoperative HCO3 (mmol/l) | 23.8 | 1.9 | 23.4 | 2.1 | NS | | Postoperative pH | 7.36 | 0.04 | 7.35 | 0.04 | NS | | Postoperative SaO2 (%) | 95.1 | 3.6 | 94.8 | 2.0 | NS | | Preoperative minimal tcpCO2 (%) | 38.8 | 3.5 | 44.8 | 8.2 | =0.0003 | | Preoperative maximal tcpCO2 (mmHg) | 47.8 | 4.6 | 51.1 | 10.5 | <0.001 | | Preoperative mean tcpCO2 (mmHg) | 43.7 | 3.7 | 53 | 5.6 | <0.0001 | | Preoperative minimal tcSpO2 (%) | 87.8 | 5.3 | 4.5 | 6.5 | NS | | Preoperative maximal tcSpO2 (%) | 98.2 | 1.3 | 98.2 | 0.9 | NS | | Preoperative mean tcSpO2 (%) | 95.0 | 1.8 | 93.7 | 2.2 | =0.037 | | Postoperative minimal tcpCO2 (mmHg) | 40.1 | 3.9 | 46.4 | 6.7 | <0.0001 | | Postoperative maximal tcpCO2 (mmHg) | 49.7 | 6.4 | 59.9 | 8.4 | <0.0001 | | Postoperative mean tcpCO2 (mmHg) | 44.3 | 4.3 | 53.4 | 6.1 | <0.0001 | | Postoperative minimal SpO2 (%) | 84.1 | 7.6 | 82.7 | 10.3 | NS | | Postoperative maximal SpO2 (%) | 97.3 | 2.7 | 96.8 | 3.2 | NS | | Postoperative mean SpO2 (%) | 93.6 | 5.3 | 90.5 | 8.3 | NS | | Hospitalization (days) | 10.9 | 10.1 | 9.1 | 1.9 | NS |
|
|
NS: not statistically significant.
|
