Double Regional Anesthesia in Video Assisted Thoracoscopy

Inclusion Criteria: * Patient aged 18 to 75 years; * Programmed for unilateral videothoracoscopy for anatomical resection (segmentectomy, lobectomy); * Subject affiliated to a social security scheme; * Subject having signed an informed consent Exclusion Criteria: * Chronic treatment with opiates; * Contraindication to administration of morphine; * Allergy to local anesthetics or contraindications to the use of ropivacaine; * Contraindication to the realization of paravertebral blocks and serratus; * Pregnancy, breastfeeding; * Severe obesity (BMI \> 40 kg/m²); * Renal impairment (GFR \< 30 mL/min) or known severe hepatic impairment; * Difficulties of comprehension preventing the collection of consent and the realization of the study;