Incidence of Pruritus Using Intrathecal Fentanyl Versus Epidural Fentanyl to Initiate Labour Analgesia.

Exclusion Criteria

• •ASA score \> 3
• •Allergy or contraindication to receiving opioids/local anesthesia (morphine or fentanyl)
• •BMI \> 40 kg/m²
• •Hepatic or renal failure,
• •Severe preeclampsia and signs of severity according to the criteria of the American College of Obstetricians and Gynecologists
• •Maternal hemorrhage (placental abruption, hepatic subcapsular hematoma,...)
• •Severe scoliosis
• •Biliary cholestasis or polymorphic eruption of pregnancy
• •Inability to provide informed consent, either secondary to mental or physical disability or a significant language barrier (inability to understand English or French)
• •Prior administration of an opioid or opioid misuse