Bilateral Subthalamic Stimulation can Improve Sleep Quality in Parkinson's Disease

Area of Science:

• Neurology
• Sleep Medicine
• Neurosurgery

Background:

• Sleep disturbances are common non-motor symptoms in Parkinson's disease (PD).
• The PD Sleep Scale 2nd version (PDSS-2) is an enhanced tool for assessing sleep problem severity in PD.
• Previous deep brain stimulation (DBS) studies have not utilized the PDSS-2.

Purpose of the Study:

• To evaluate the reliability of the PDSS-2 in detecting sleep quality improvements following bilateral subthalamic nucleus DBS in PD patients.
• To assess the impact of DBS on overall PD symptom severity and non-motor symptoms.

Main Methods:

• A prospective study involving 25 consecutive PD patients undergoing DBS implantation.
• Patients were assessed at baseline (1 week pre-DBS) and 12 months postoperatively.
• Sleep problems were measured using the PDSS-2, alongside MDS-UPDRS for PD symptoms and NMSS for non-motor symptoms.

Main Results:

• Significant improvements were observed in MDS-UPDRS scores (p < 0.001) and health-related quality of life (PDQ-39, p = 0.002).
• The number of patients reporting sleep problems decreased from 13 at baseline to 3 one year after DBS (p = 0.012).
• The total PDSS-2 score significantly decreased from 24 to 10 (p < 0.001), indicating improved sleep quality.

Conclusions:

• The PDSS-2 is a reliable instrument for measuring sleep quality improvements after DBS in Parkinson's disease.
• DBS implantation leads to significant improvements in sleep disturbances and overall well-being in PD patients.