Diagnosis of Diaphragmatic Paralysis After Interscalene Block: Feasibility and Impact Observed

"Non-invasive and non-irradiating. The diaphragmatic thickening in recovery is measured before and after the completion of the anesthetic block using the ultrasound system, the ultrasound probe and of an aqueous gel by trans-thoracic approach.~It measures the thickness on deep inspiration and expiration in supine position. Each measurement is repeated twice. This measurement series lasts 4 minutes, is repeated 15 minutes after completion of the engine block when a block is found and contralateral. The total measurement time is about 12 minutes."