The long-term development of non-motor problems after STN-DBS

Area of Science:

• Neurology
• Neurosurgery
• Movement Disorders

Background:

• Subthalamic nucleus deep brain stimulation (STN-DBS) is a recognized treatment for Parkinson's disease (PD) motor symptoms.
• The long-term impact of STN-DBS on non-motor symptoms in PD patients remains unclear.

Purpose of the Study:

• To investigate the longitudinal development of non-motor problems in Parkinson's disease patients undergoing STN-DBS.
• To compare non-motor symptom progression in STN-DBS patients versus a non-operated control group.

Main Methods:

• Prospective cohort study of patients with STN-DBS, followed 6-9 years post-surgery.
• Comparison with a matched, non-operated reference population to assess longitudinal changes.

Main Results:

• Non-motor problems in advanced PD generally progress independently of STN-DBS.
• Depression scores improved post-STN-DBS, with no worsening observed.
• Fatigue significantly increased in STN-DBS patients within one year and continued to rise throughout the follow-up period.

Conclusions:

• The progression of non-motor symptoms in advanced Parkinson's disease appears unrelated to STN-DBS.
• Findings may inform strategic decisions regarding the optimal timing for initiating STN-DBS therapy in eligible patients.