Please select the arm or intervention descriptions that belong to the clinical trial below.
Title: Comparison of Effectiveness of Tonic, High Frequency and Burst Spinal Cord Stimulation in Chronic Pain Syndromes: a Double-blind, Randomised, Cross-over, Placebo Controlled Trial
Brief Summary: Spinal cord stimulation (SCS) is one of the most commonly undertaken neuromodulatory surgery techniques in the treatment of neuropathic pain. The indication for SCS is an ineffective conservative treatment of chronic pain syndromes. The effectiveness of SCS in the case of neuropathic pain is high. The positive result of SCS treatment is the reduction of previous painful symptoms by min. 50% and / or a reduction in the amount of taken analgesics and an improvement in the quality of life including sleep quality. Long-term studies estimate that in a properly selected group of patients more than 50% of patients achieve pain reduction by the required 50% and about 60% - 70% have an improvement in the quality of life and a reduction of pain.

The efficacy of SCS in different modes of stimulation is evaluated. Patients receive four different types of stimulation for 2-week period - not knowing what kind of stimulation it is. It is said that in one type of stimulation they would feel parestesias and in other three they would not. Patients are not informed that beside tonic, burst and high frequency stimulation, the fourth is an off stimulation to check for placebo effect. The test is double-blinded


Options:
A: Arm Label: scs high-frequency; Type: EXPERIMENTAL; Interventions: Device: Device: Precision Novi™ system Neurostimulation procedures | Arm Label: scs tonic; Type: EXPERIMENTAL; Interventions: Device: Device: Precision Novi™ system Neurostimulation procedures | Arm Label: scs burst; Type: EXPERIMENTAL; Interventions: Device: Device: Precision Novi™ system Neurostimulation procedures | Arm Label: scs off; Type: PLACEBO_COMPARATOR; Interventions: Device: Device: Precision Novi™ system Neurostimulation procedures | Intervention Type: DEVICE; Name: Device: Precision Novi™ system Neurostimulation procedures; Assigned to Arm(s): scs burst, scs high-frequency, scs off, scs tonic
B: Arm Label: Burst spinal cord stimulation (SCS); Type: EXPERIMENTAL; Interventions: Procedure: Burst Spinal Cord Stimulation, Procedure: Sham spinal cord stimulation | Arm Label: sham spinal cord stimulation (SCS); Type: SHAM_COMPARATOR; Interventions: Procedure: Burst Spinal Cord Stimulation, Procedure: Sham spinal cord stimulation | Intervention Type: PROCEDURE; Name: Burst Spinal Cord Stimulation; Assigned to Arm(s): Burst spinal cord stimulation (SCS), sham spinal cord stimulation (SCS) | Intervention Type: PROCEDURE; Name: Sham spinal cord stimulation; Assigned to Arm(s): Burst spinal cord stimulation (SCS), sham spinal cord stimulation (SCS)
C: Arm Label: High Frequency; Type: EXPERIMENTAL; Interventions: Device: Spinal Cord Stimulator HF | Arm Label: Sham; Type: SHAM_COMPARATOR; Interventions: Device: Spinal Cord Stimulator Sham | Intervention Type: DEVICE; Name: Spinal Cord Stimulator HF; Assigned to Arm(s): High Frequency | Intervention Type: DEVICE; Name: Spinal Cord Stimulator Sham; Assigned to Arm(s): Sham
D: Arm Label: Spinal Cord Stimulation (SCS); Type: ACTIVE_COMPARATOR; Interventions: Device: Spinal Cord Stimulation | Arm Label: Conventional Medical Management (CMM); Type: ACTIVE_COMPARATOR; Interventions: Other: Conventional Medical Management | Intervention Type: DEVICE; Name: Spinal Cord Stimulation; Assigned to Arm(s): Spinal Cord Stimulation (SCS) | Intervention Type: OTHER; Name: Conventional Medical Management; Assigned to Arm(s): Conventional Medical Management (CMM)

Answer: A