Quadratus Lumborum Block vs Transversus Abdominis Plane Block in Bladder Cancer Surgeries
Status:
Recruiting
Trial end date:
2020-10-05
Target enrollment:
Participant gender:
Summary
Transversus abdominis plane (TAP) block can be used to provide effective analgesia during the
postoperative period following a range of surgeries.
TAP block administers local anesthetics between the T6 to L1 spinal nerve roots to stop the
nerve signal and to alleviate pain for abdominal procedures 4, 5.
The viscera are innervated by the vagal nerve (parasympathetic innervation) and by the
splanchnic nerves (sympathetic innervation). The splanchnic nerves carry both visceral
efferent and afferent nerve fibers. The sensory (or afferent) part of the splanchnic nerves
reach the spinal column at certain spinal segments, It is possible to block central visceral
pain conduction with thoracic paravertebral blockade or maybe even with the novel quadratus
lumborum (QL) block.
The effect of the QL block is believed to result from a spread of LA from its lumbar
deposition cranially into the thoracic paravertebral space (TPVS), since Carney et al found
traces of contrast agent in the TPVS following application of this block. Hence, the QL block
would seem to be able to alleviate both somatic and visceral pain.10
The aim of this study is to compare between quadratus lumborum block, transversus abdominis
plane block regarding perioperative analgesia after bladder cancer surgeries by measuring
intraoperative hemodynamics, postoperative pain scores and morphine consumption in the first
24 h postoperative.