Analgesic Territory Assessment of the Spinal Erector Block Using Pupillometry (TEASER)

Centre Hospitalier Universitaire de Saint Etienne

Status: Completed

Conditions: Anesthesia, Local

Treatments: Other: data collected

Study type: Observational

Funder types: Other

Identifiers

NCT05762159

IRBN1272022/CHUSTE

Details and patient eligibility

About

Few works have studied the area of analgesia covered by the spinal erector block in an objective manner, especially on the cephalo-caudal spread. The available data are dissection works or subjective data such as thermoalgesic or epicritic sensitivity.

This information would however be relevant in order to propose a better analgesia. Indeed, it could explain certain failures by insufficient diffusion of the block. The use of a multistage block could be relevant, especially in the case of osteosynthesis on several vertebral levels.

Full description

Pupillometry makes possible to monitor analgesia based on the pupillary dilation reflex to pain. The goal is to establish an objective mapping of these type of analgesia from these data.

Enrollment: 30 patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Patients receiving erector spinae block for pain management of spinal osteosynthesis

Exclusion criteria

• Patient refusal
• Known allergy to local anesthetics
• Contraindication to locoregional anesthesia (haemostasis disorder, infection, peripheral neuropathy)
• Technical impossibility to perform a spinal erector block
• Pathology with dysautonomia altering the pupillary reflex: diabetes mellitus with diabetic retinopathy, multiple sclerosis, systemic amyloidosis, uncontrolled hypertension, glaucoma
• Current treatment likely to alter pupillary dilation reflex to pain : antiemetic (droperidol, metoclopramide), alpha-2 agonist (clonidine)
• Serious psychiatric history
• Drug abuse
• Pregnancy

Trial design

30 participants in 1 patient group

erector spinae block

Description:

Patients receiving erector spinae block for pain management of spinal osteosynthesis. Pupillometer will be realized during analgesia (usual practice).

Treatment:

Other: data collected