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To evaluate and compare the NoL index variations after a painful physiotherapy exercise in patients with upper limb CRPS, before and after a stellate ganglion block.
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| NoL index | Device | The NoL/PMD-200 (Medasense Biometrics Ltd, Ramat Yishai, Israel) is a multi-parameter index (0-100) that incorporates heart rate, heart rate variability (0.15-0.4 Hz band power), plethysmograph wave amplitude, skin conductance level, number of skin conductance fluctuations (NSCF), and their time derivatives9 using a non-linear regression technique. A higher index indicates higher nociception, and an index <20 indicates adequate analgesia. |
| Measure | Description | Time Frame |
|---|---|---|
| Change in NoL index from baseline | • Change in the NoL index after a painful physiotherapy exercise in patients with upper limb CRPS 20 minutes after a stellate ganglion block, from baseline (before the stellate ganglion block) | 20 minutes |
| Measure | Description | Time Frame |
|---|---|---|
| Change in peak NoL index values before and after a stellate ganglion block | Measure the change in peak NoL index (peak NoL index after a painful physiotherapy exercise before the stellate ganglion block minus the peak NoL index value after a painful physiotherapy exercise after the stellate ganglion block | 20 minutes |
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Inclusion Criteria:
Exclusion Criteria:
Patients taking beta blockers
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Patients with upper extremity complex regional pain syndrome treated at the pain clinic of the Maisonneuve-Rosemont Hospital
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| Name | Affiliation | Role |
|---|---|---|
| Veronique Brulotte, MD | Maisonneuve-Rosemont Hospital | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Maisonneuve Rosemont Hospital | Montreal | Quebec | h1t2m4 | Canada |
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| change in Numeric Rating Scale (NRS) pain intensity score (from 0-10) before and after a stellate ganglion block |
Measure the change in NRS pain intensity score after a painful physiotherapy exercise, before and 20 minutes after a stellate ganglion block. |
| 20 minutes |
| correlation between change in NoL index and change in the Numeric Rating Scale (NRS) pain score (from 0-10) from baseline | Correlate the NoL index variation (delta NoL) with the NRS pain score variation (delta NRS) painful physiotherapy exercise in patients with upper limb CRPS, before and 20 minutes after a stellate ganglion block. | 20 minutes |