Inclusion Criteria:  have a 1st or 2nd degree postpartum perineal laceration requiring suturing; have reached 37 gestational weeks; are over 18 years of age; had a top birth; are able to understand the Italian language; have a consent to participate in the study;  Exclusion Criteria:  - have received epidural anesthesia within 2 hours prior to delivery;  had an operative birth; have a psychiatric pathology; have had a twin birth; have experienced adverse reactions to any local anesthetic in the past; hypersensitivity to the active substance or to any of the excipients Severe disturbances of the cardiac conduction system Acute non compensated heart failure Severe arteriopathies Severe uncontrolled hypertension Intravascular injections Septicemia Dysfunction Infection at the injection site Kidney failure. Providing for the exclusion of patients with severe renal impairment (estimated GFR <30 mL / min / 1.73 m2 at the time of screening). Advanced liver dysfunction Hyperthyroidism Acute angle glaucoma Participation in a clinical trial in which an investigational drug was administered within 30 days of screening or 5 half-lives of the study drug Any clinical condition that in the investigator's judgment would render the patient unsuitable for the study including, but not limited to, infectious, inflammatory, psychiatric, neurological, cardiological, renal, hepatic, respiratory, diabetes) conditions or laboratory value at clinically meaningful screening that, an investigator's opinion, may present a safety risk, interface with study compliance and follow-up; have had in pregnancy liver disease including pre-eclampsia.