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Table 1 Results of the selected diagnostic tests

From: Pleurodesis with pseudomonas aeruginosa-mannose–sensitive hemagglutinin for pneumothorax secondary to COPD: a retrospective study

Clinical parameters Frequency [Percentage (n)]
Hypercarbia (PaCO2 > 45 mmHg) and hypoxemia (PaO2 < 55 mmHg) based on arterial blood gas analysis 82% (64)
VC < 1 L (<50% of the predicted value), FEV1 < 0.5 L (<40% of the predicted value), MVV < 50% of the predicted value, FEV1/VC <0.7 in pulmonary function tests 98% (76)
Confirmed pneumothorax with diffuse emphysema and subpleural bullae from CT or chest X-ray 100% (78)
Breath-holding test < 15 s 95% (74)
  1. Abbreviations: FEV1 Forced expiratory volume in one second, MVV maximal voluntary ventilation, VC vital capacity