Porras 2007.
Methods | A randomised double‐blind prospective study | |
Participants |
Intervention: steroid rhizotomy Diagnostic criteria of patients included in the trial Idiopathic trigeminal neuralgia with no response to pharmacological treatment Age mean (SD) 60.5 (13.1) Gender 3 male, 7 female Severity 8 to 10 on a scale of 0 to 10 Duration of condition mean (range) years Not available Number 10 Intervention: glycerol rhizotomy Diagnostic criteria of patients included in the trial Idiopathic trigeminal neuralgia with no response to pharmacological treatment Age mean (SD) 59 (7.3) Gender 3 male, 7 female Severity 8 to 10 on a scale of 0 to 10 Duration of condition mean (range) years Not available Number 10 |
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Interventions |
Intervention: steroid rhizotomy Type of intervention Percutaneous Gasserian ganglion block with 40 mg of methyprednisolone acetate Length of follow‐up 4 weeks Intervention: glycerol rhizotomy Type of intervention Percutaneous Gasserian ganglion selective block with 0.4 cc of 100% glycerol Length of follow‐up 4 weeks |
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Outcomes |
Primary outcome Pain relief at 4 weeks |
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Notes | Lack of data. Randomisation said to have been done but with no details. No allocation concealment. Very short trial | |
Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Unclear risk | No data given |
Allocation concealment (selection bias) | Unclear risk | No data given |
Blinding (performance bias and detection bias) All outcomes | Low risk | Stated that patients and doctors who did the VAS assessments were blind to the substance injected |
Incomplete outcome data (attrition bias) All outcomes | High risk | Incomplete data |
Selective reporting (reporting bias) | Unclear risk | incomplete data |
Other bias | Unclear risk | No data given |