Quadratus Lumborum Block vs Erector Spinal Block for Post Abdomen Surgery Analgesia
Status:
Recruiting
Trial end date:
2023-12-31
Target enrollment:
Participant gender:
Summary
The Erector Spinal Block (ESP) is based on the deposition of the local anesthetic in the
inter-fascial space between the dorsal extensor muscle and the intercostal muscles at the
height of the transverse processes. The scope of the blockade covers the dorsal and ventral
branches of the thoracic spinal nerves, but also in most cases the investigetors are able to
obtain a wide distribution of the drug into the paravertebral space by "permeating" the local
anesthetic through the fascial compartments. The clinical effect of the blockade is due to
blocking the nerve structures of the paravertebral space (spinal nerve branches and the
sympathetic trunk). The scope of the blockade, after its execution at the level of Th5, most
often includes the segments from Th1 to L1.
Currently, the Quadratus Lumborum block (QL block) is performed as one of the perioperative
pain management procedures for all generations (pediatrics, pregnant, and adult) undergoing
abdominal surgery. The local anesthetic injected via the approach of the posterior QL block (
QL 2 block ) can more easily extend beyond the TAP to the thoracic paravertebral space or the
thoracolumbar plane, the posterior QL block entails a broader sensory-level analgesic and may
generate analgesia from T7 to L1. Use of posterior QL block in laparoscopic prostatectomy has
not been investigated before and it is the variant that will be discussed in our study.