Obstructive sleep apnea, CPAP therapy and Parkinson's disease motor function: A longitudinal study

Area of Science:

• Neurology
• Sleep Medicine
• Movement Disorders

Background:

• Obstructive sleep apnea (OSA) is a common comorbidity in Parkinson's disease (PD).
• The impact of OSA on motor dysfunction progression in PD and the efficacy of OSA treatment remain under investigation.

Purpose of the Study:

• To investigate the association between OSA and motor dysfunction progression in PD patients.
• To evaluate the effect of continuous positive airway pressure (CPAP) treatment on motor symptoms in PD patients with OSA.

Main Methods:

• Prospective cohort study of 67 idiopathic PD patients.
• OSA diagnosis based on polysomnography (apnea-hypopnea index ≥15 events/h).
• Motor function assessed using mUPDRS and TUG at 3, 6, and 12 months, with mixed-effects models.

Main Results:

• Patients with OSA (OSA+) had higher baseline motor dysfunction (mUPDRS) compared to those without OSA (OSA-) (p < 0.001).
• Motor dysfunction progression was similar in OSA- and OSA+ patients not treated with CPAP (OSA+CPAP-).
• CPAP treatment (CPAP+) in OSA+ patients was associated with significantly lower mUPDRS change (p=0.03) and TUG change (p=0.002) compared to OSA- and OSA+CPAP- groups, respectively.

Conclusions:

• OSA is associated with increased baseline motor impairment in Parkinson's disease.
• CPAP treatment for OSA in PD patients may stabilize motor function over a 12-month period.
• Further research is warranted to elucidate the role of OSA in PD pathophysiology and its impact on motor symptoms.