Clinical Research Directory

Medical students : Inclusion criteria: * Medical students between the 4th and 6th year of their medical course, working in the department of respirology at the University hospital of Strasbourg, France, without any prior experience of thoracocentesis. * Older than 18 years old * No opposition to participate to the study (signed consent form). Exclusion criteria: \- Student with a prior experience of pleural procedure (chest tube, thoracocentesis). Patients : Inclusion criteria: * Patients requiring a first-time thoracentesis in routine care. * Older than 18 years old. * Speaking and understanding French. * Valid health insurance. * No opposition to participate to the study (signed consent form). Exclusion criteria: * Patient with previous experience of pleural procedure (thoracocentesis, chest tube…). * Patient having a high-volume pleural effusion according to radiological/ultrasound criteria. * Patient with low-volume pleural effusion according to radiological/ultrasound criteria. * Patient with poor clinical tolerance of the pleural effusion(respiratory instability, dependence on ventilation machine with positive expiratory pressure…). * Patients with higher risk of complication during the procedure (BMI \> 35 kg/m², with increased risk of bleeding…). * Contraindication to the use of Lidocaine. * Local infection. * Impossibility to provide detailed information to the patient. * Subject under legal protection.