• D A Lichtenstein and Y Menu.
• Service de Réanimation Médicale, Hôpital Ambroise-Paré, Boulogne, France.
• Chest. 1995 Nov 1;108(5):1345-8.

Study ObjectivesTo describe and evaluate an ultrasound pattern useful in the diagnosis of pneumothorax.DesignUltrasound examination of "lung sliding," a respiratory movement visible when investigating the chest wall.SettingThe medical ICU of a university-affiliated hospital.PatientsThe study group included 43 proved pneumothoraces, either by chest radiograph (n = 40) or by CT (n = 3). The control group included 68 hemithoraces in which the absence of pneumothorax was proved by CT.InterventionAnalysis of anterior chest wall in supine patients.Measurements And ResultsFeasibility was 98.1%. Disappearance of "lung sliding" was observed in 100% of 41 analyzable cases of pneumothorax vs 8.8% of the hemithorax without pneumothorax (6 of 68). In this series, sensitivity was 95.3%, specificity 91.1%, and negative predictive value 100% (p < 0.001).ConclusionsUltrasound was a sensitive test for detection of pneumothorax, although false-positive cases were noted. The principal value of this test was that it could immediately exclude anterior pneumothorax.

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