Respiration; international review of thoracic diseases
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Multicenter Study
Opium could be considered an independent risk factor for lung cancer: a case-control study.
Lung cancer is the leading cause of cancer-related death worldwide, and half of all incident lung cancers are believed to occur in the developing countries, including Iran. ⋯ This study demonstrated that smoking opium is associated with a high risk of lung cancer as an independent risk factor.
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Multicenter Study Comparative Study
Exertional desaturation as a predictor of rapid lung function decline in COPD.
To date, no clinical parameter has been associated with the decline in lung function other than emphysema severity in COPD. ⋯ This study suggests, for the first time, that exertional desaturation may be a predictor of rapid decline in lung function in patients with COPD. The 6MWT may be a useful test to predict a rapid lung function decline in COPD.
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Multicenter Study Comparative Study
Prediction of requirement for mechanical ventilation in community-acquired pneumonia with acute respiratory failure: a multicenter prospective study.
Several severity scoring systems for predicting mortality are established in community-acquired pneumonia (CAP). ⋯ The results of this study suggest that the A-DROP scoring system could be a simple CAP risk scoring system which could predict not only mortality, but also the requirement for mechanical ventilation.