Rare Side-effects during Spinal Cord Stimulation: Gastrointestinal Symptoms

Area of Science:

• Neurology
• Gastroenterology
• Pain Management

Background:

• Complications from spinal cord stimulation (SCS) are typically technical.
• Reported side effects of SCS are infrequent in medical literature.
• Chronic neuropathic pain, often from failed back surgery syndrome, is a common indication for SCS.

Purpose of the Study:

• To report uncommon gastrointestinal (GI) side effects associated with SCS.
• To investigate the relationship between SCS parameters and the occurrence of GI symptoms.
• To explore potential mechanisms underlying SCS-induced GI dysfunction.

Main Methods:

• A clinical case report detailing a patient with failed back surgery syndrome undergoing SCS.
• Observation of GI symptoms including constipation, abdominal pain, and distension during SCS therapy.
• Correlation analysis of symptom severity with SCS parameters (on/off, stimulation intensity).

Main Results:

• The patient experienced significant GI side effects during SCS.
• Symptoms resolved upon cessation of SCS.
• Reducing stimulation intensity below the paresthesia threshold lessened the GI symptoms.
• The findings suggest a potential link between SCS and autonomic nervous system function.

Conclusions:

• Spinal cord stimulation may lead to unexplained GI side effects.
• These adverse events appear to be reversible and potentially related to parasympathetic outflow modulation.
• Further research is needed to understand the mechanisms and prevalence of SCS-related GI dysfunction.