In the article that appeared on Page 779–788, Vol 9, No 3 (March 2017) Issue of the Journal of Thoracic Disease (1), there are some mistakes in the arterial blood gases, FEV1 and FVC results presented in Table 1. The correct table should have been shown as below:
Table 1. Demographic and sleep characteristics of all participants and comparisons between patients with low and high pulmonary artery pressure (PAP).
| All (n=77) | High SPAP (n=53) (SPAP>40 mmHg) | Normal SPAP (n=24) (SPAP≤40 mmHg) | P value | |
|---|---|---|---|---|
| Males (%) | 21 (27.3) | 13 (24.5) | 8 (33.3) | 0.5 |
| Age (years) | 60.5±11.7 | 62.0±11.5 | 56.3±11.4 | 0.057 |
| Body mass index (kg/m2) | 43.2±10.4 | 44.3±11.6 | 42.8±10.1 | 0.6 |
| Smoking | ||||
| Active (%) | 4 (5.2) | 4 (7.5) | 0 | 1 |
| Ex-smoker (%) | 10 (13) | 6 (11.3) | 4 (16.6) | 0.5 |
| Epworth Sleepiness Scale | 11.4±5.5 | 11.4±5.5 | 9.7±4.3 | 0.2 |
| pH | 7.38±0.7 | 7.38±0.1 | 7.4.0±0 | 0.7 |
| PaCO2 (mmHg) | 57.9±9.5 | 57.8±10.2 | 57.9±8.0 | 0.6 |
| PaO2 (mmHg) | 61.1±12.5 | 60.0±11.9 | 63.6±13.5 | 0.2 |
| HCO3 (mmol/L) | 33.5±5.8 | 33.0±6.2 | 33.6±7.7 | 0.8 |
| Hemoglobin level (g/dL) | 13.3±2.5 | 14.1±1.8 | 13.7±2.5 | 0.1 |
| Hematocrit | 39.5±7.2 | 41.6±5.3 | 40.6±7.3 | 0.2 |
| FEV1 (% predicted) | 56.1±17.8 | 51.0.8±16.9 | 63.2±20.2 | 0.02 |
| FVC (% predicted) | 55.2±19.4 | 53.0±15.8 | 64.4±21.4 | 0.003 |
| FEV1/FVC % | 82.1±9.9 | 82.5±12.6 | 81.5±9.6 | 0.4 |
| SPAP (mmHg) | 54.1±22.5 | 65.5±16.3 | 27.0±4.3 | <0.001 |
PaCO2, arterial partial pressure of carbon dioxide; PaO2, arterial partial pressure of oxygen; FEV1, forced expiratory volume in 1 second; FVC, forced vital capacity; SPAP, systolic pulmonary artery pressure.
We regret the errors.
References
- 1.Almeneessier AS, Nashwan SZ, Al-Shamiri MQ, et al. The prevalence of pulmonary hypertension in patients with obesity hypoventilation syndrome: a prospective observational study. J Thorac Dis 2017;9:779-88. 10.21037/jtd.2017.03.21 [DOI] [PMC free article] [PubMed] [Google Scholar]