Testing the hypothesis that in children undergoing spinal surgery, ESP-block will increase the time to emergency anesthesia in the postoperative period compared with intravenous lidocaine infusion.

Interventions for congenital or acquired spinal anomalies are usually voluminous and traumatic, which causes a high level of pain stimulation during the perioperative period. Thus, the problem of pain in spinal surgery is extremely important and is one of the main components of successful treatment.

Combined anesthesia using regional techniques (local anesthesia is added to general anesthesia) can be a significant alternative to performing traditional combined anesthesia with high doses of opioids (narcotic painkillers with undesirable side effects). It allows you to follow the principles of multimodal analgesia, with the possibility of rapid recovery of the patient in the postoperative period.

The use of ESPB (spinal straightening plane blockade) in vertebrology has currently been studied only in adult patients. ESPB is effective and safe for postoperative pain relief after lumbar spine surgery. ESPB can reduce the consumption of opioids (narcotic painkillers) after surgery, increase patient satisfaction, and shorten the length of hospitalization.

Currently, the use of the local anesthetic lidocaine as a medicinal agent for intravenous infusion in children, as an alternative to narcotic anesthesia, is also being actively discussed.

A large number of studies indicate the effectiveness of intravenous lidocaine infusion for perioperative anesthesia in adult patients. In pediatric practice, this technique is not widely used due to the lack of evidence base for efficacy and safety.

Intravenous infusion of lidocaine consistently improves analgesic parameters in the adult and pediatric populations in the first 24 hours, while an effective decrease in the consumption of narcotic painkillers is noted by 48 hours.

Intravenous lidocaine has demonstrated antineuropathic, antihyperalgesic and anti-inflammatory effects and is a new method. Numerous studies in adults have demonstrated the beneficial effects of intravenous lidocaine, including improved pain relief with reduced postoperative use of narcotic painkillers, earlier activation, and shorter length of stay in the intensive care unit. To date, the dose ranges studied in the pediatric population have not been associated with serious side effects, and current evidence suggests that intravenous lidocaine administration will be well tolerated.

Inclusion Criteria:

• 1. Elective surgery on the thoracic and lumbosacral spine. 2. Signed informed consent to participate in the study; 3. Age 3-17 years.

Exclusion Criteria:

1. Contraindications to the use of local anesthetics;
2. Operations on the cervical spine;
3. Contraindications to performing ESPB;
4. The patient's refusal to participate in the study.

By a reasonable request