The Difference Between the Extrafascial Injection & the Subfascial

Status Completed

Clinical Trial Summary

Quadratus lumborum block can be used for the hip surgery and abdominal surgery postoperative analgesia. But the lower thoracic to the hip dermatome can't be blocked at the same time. The anesthetists used the same method, but had produced the different dermatome were blocked. The investigators hypothesized that this was due to local anesthetics was injected to different locations of the anterior thoracolumbar fascia. If the investigators inject local anesthetics to the anterior layer of thoracolumbar extrafascial, this produced the dermatomal coverage from lower abdominal to hip. A different situation was when the investigators injected local anesthetics to anterior thoracolumbar subfascia, the lower thoracic dermatome were blocked.

Clinical Trial Description

Quadratus lumborum block can be used for the hip surgery and abdominal surgery postoperative analgesia. But the lower thoracic to the hip dermatomes can't be blocked at the same time. The anesthetists used the same method, but had produced the different dermatomes were blocked. The investigators hypothesized that this was due to local anesthetics was injected to different locations of the anterior thoracolumbar fascia. If the investigators inject local anesthetics to the anterior thoracolumbar extrafascial (between the anterior layer of thoracolumbar fascia and psoas major muscle), this produced the dermatomal coverage from lower abdominal to hip. In this case, the investigators speculated the local anesthetic spread to the lumbar paravertebral space via the fascia and the fascicle of psoas major. A different situation was when the investigators injected local anesthetics to anterior thoracolumbar subfascial (between the anterior layer of thoracolumbar fascia and quadratus lumborum), the lower thoracic dermatomes were blocked. The investigators speculate that the local anesthetic injected subfascial could spread cephalad to lower thoracic paravertebral space posterior to the endothoracic fascia via lateral arcuate ligament.

The investigators confirm the hypothesis in the pilot trial. therefore, the investigators need to trial with large sample. The investigators plan to improve the clinical guidance of quadratus lumborum block technology, so that more patients benefit. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT03421821
Study type	Interventional
Source	Third Military Medical University
Contact
Status	Completed
Phase	N/A
Start date	February 25, 2018
Completion date	September 17, 2018

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

The Difference Between the Extrafascial Injection and the Subfascial Injection of Quadratus Lumborum Block

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms