Impact of Percutaneous Intercostal Nerve Stimulation Combined With Diaphragm Pacing on Respiratory Function in Cervical Spinal Cord Injury: A Case Report.
Run Peng, Huiming Gong, Xiaoxin Wang and 7 others
PMID 41477084WHAT IT FOUND
In one man with high cervical spinal cord injury, adding percutaneous intercostal nerve stimulation to his existing diaphragm pacemaker raised tidal volume from 124-138 mL to 241 mL.
This allowed him to voluntarily assist inspiration when feeling oxygen-deprived, but it is a single case.
Key findings
01Combined stimulation of the intercostal nerves and diaphragm pacemaker increased tidal volume to 241 mL, compared to 124-138 mL with diaphragm pacing alone.
02The patient could voluntarily contract accessory muscles in synchrony with the pacemaker to enhance inspiratory volume when perceiving oxygen deprivation.
03Stimulation of the intercostal nerves improved muscle recruitment, but coordinated contraction between thoracic and abdominal muscles could not be stably achieved.
STILL TO COME
How it was doneWhat they foundWhat it means for SLPs
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What it does not show
This is a single case report, so the results cannot be generalised to other patients. The observation period was only two weeks, which is too short to determine long-term efficacy or safety. Stimulation was applied to only 2-3 pairs of intercostal nerves out of 12, which may limit the extent of muscle activation. The patient had a secondary thoracic deformity, which may have complicated the measurement accuracy and functional assessment. It is unclear whether the increased tidal volume was due to a simple mechanical additive effect or a neural-level synergistic interaction.
Declared interests
The investigators have no financial or nonfinancial disclosures to make in relation to this project.
The easy way to misread this
Do not assume this combined stimulation protocol is an effective treatment for respiratory dysfunction in cervical spinal cord injury. The evidence comes from a single patient observed for only two weeks, and the study could not determine if the benefit was a mechanical additive effect or a neural interaction.
Summarised by AI from the full paper, without a clinician reviewing it. Check it against the source before it changes what you do. Read it on PubMed →