Scalp Infiltration With Methylprednisolone Plus Ropivacaine for Post-Craniotomy Pain in Children

Exclusion Criteria

• •1. History of allergies to any of the study drugs;
• •2. Excessive alcohol or drug abuse, chronic opioids use (more than 2 weeks or 3 days per week for more than 1 month), or drugs with confirmed or suspected sedative or analgesic effects; receiving any painkiller within 24 h before surgery; children who received steroids；
• •3. Psychiatric disorders;
• •4. Uncontrolled epilepsy;
• •5. Chronic headache;
• •6. Peri-incisional infection;
• •7. Body mass index exceeded the 99th percentile for age;
• •8. Children who cannot use patient-controlled intravenous analgesia(PCIA) device;
• •9. Children who cannot understand an instruction of pain scales before surgery.