Short-Term Repeated Transcutaneous Spinal Cord Stimulation Yields Sustained Orthostatic Benefits in Chronic Cervical...

Area of Science:

• Neurology
• Cardiovascular Science
• Rehabilitation Medicine

Background:

• Cardiovascular dysfunction, particularly orthostatic hypotension, significantly impacts quality of life for individuals with spinal cord injuries (SCIs) at T6 or above.
• Spinal cord transcutaneous stimulation (scTS) offers potential for immediate blood pressure regulation, but long-term effects are understudied.

Purpose of the Study:

• To investigate the sustained effects of scTS on blood pressure regulation and orthostatic tolerance in a patient with cervical SCI.
• To evaluate the potential of scTS as a non-invasive management strategy for cardiovascular dysfunction in SCI.

Main Methods:

• A case study involving a 33-year-old female with C4 complete SCI.
• Baseline and post-training tilt tests were conducted without stimulation.
• A two-week training phase included six 30-minute scTS-CV (cardiovascular-focused stimulation) sessions.

Main Results:

• Improved orthostatic tolerance, with the participant maintaining a 70° tilt for 30 minutes post-training compared to 3 minutes at baseline.
• Self-reported reduction in orthostatic burden and decreased reliance on midodrine were noted for several weeks.
• Observed improvements began to diminish by 6 weeks post-training.

Conclusions:

• Brief, repeated scTS-CV sessions may induce sustained improvements in orthostatic tolerance beyond the stimulation period.
• scTS presents a potential non-invasive therapeutic option for managing cardiovascular dysfunction in SCI patients.
• Further research is needed to establish the duration and optimal parameters for scTS effects in SCI.