Measuring pain felt by patients with a measurement of how their faces move Signs and Symptoms
Conditions
Interventions
Patients receive a local anaesthetic injection before a planned hand operation. Whilst they are receiving the injection the facial muscle response is recorded non-invasively using specialized goggles
Sponsors
Queen Victoria Hospital
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: Patient: 1. Adult age 18+ with full capacity 2. ASA I (normal, healthy) and II (mild systemic disease; no functional limitation) 3. Fluent in English Trauma/procedure: 1. Patients have received superficial trauma to the hand only 2. Patient is due to have examination and operation performed under local anaesthesia only 3. A digital ring block is planned for anaesthesia/analgesia during the procedure 4. No sedation/intravenous opioids are due to be administered 5. Oral analgesia via WHO analgesic ladder is permitted
Exclusion criteria
Exclusion criteria: 1. A history of chronic pain on long term opiates 2. A diagnosis of dementia/long-term memory impairment 3. Previous facial surgery (previous minor facial laceration suturing does not exclude) 4. Cosmetic facial procedures, e.g. botox injection or cosmetic “fillers” 5. Past history of facial neuromuscular disease eg Bell’s palsy 6. Pregnant
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| 1. The timing and magnitude of the muscle response from the peri-orbital muscles to the painful stimulus (a local anaesthetic injection to the finger), recorded non-invasively using specialized goggles containing muscle sensors at baseline, during painful stimulus and post stimulus 2. Pain measured using a visual analogue scale (VAS) pain score linked into a computer at baseline, during painful stimulus and post stimulus | — |
Secondary
| Measure | Time frame |
|---|---|
| 1. The amplitude of peri-orbital facial muscle activity (Corrugator Supercilii + Orbicularis Oculi), recorded non-invasively using specialized goggles containing muscle sensors at baseline, during painful stimulus and post stimulus 2. Heart rate and heart rate variability, measured using sensors in the specialised goggles and using a continuous ECG recording at baseline, during painful stimulus and post stimulus | — |
Countries
England, United Kingdom
Outcome results
None listed