Annals of Indian Academy of Neurology
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Year : 2022  |  Volume : 25  |  Issue : 4  |  Page : 683-687

Respiratory dysfunction in parkinson's disease: Relation with dysautonomia

1 Department of Physiology, All India Institute of Medical Sciences (AIIMS), New Delhi, India
2 Department of Neurology, All India Institute of Medical Sciences (AIIMS), New Delhi, India

Correspondence Address:
Anjana Talwar
Department of Physiology, All India Institute of Medical Sciences, New-Delhi - 110 029
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/aian.aian_940_21

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Background: Parkinson's disease (PD) is a neurodegenerative disease perceived as a motor disorder. It is most commonly associated with autonomic dysfunction, affecting multiple systems. This altered autonomic control might be reflected by a parallel change in the airway caliber of these patients. Aim: To correlate the pulmonary impairment in patients with Parkinson's disease with the underlying dysautonomia. Materials and Methods: A total of 30 patients with Parkinson's disease participated in the study. Heart rate (HR) variability was recorded for 5 min to assess the autonomic dysfunction, followed by impulse oscillometry (IOS) and spirometry. IOS being an effort independent technique uses sound waves at different frequencies (5–25 Hz) to measure the airway impedance. Results: There was a significant decrease in SDSD (6.60 (10.18–6.01) vs. 12.22 (13.95–11.30); P = 0.04), RMSSD (6.59 (10.17–5.50) vs. 12.20 (13.93–11.28); P = 0.04), and total power (315.8 (506.3–120.7) vs. 771.3 (799.0–643.6); P = 0.04) in stage II as compared to stage I. Resistance at 20 Hz (R20) was found to be positively correlated with SDSD (r = 0.40, P = 0.04), RMSSD (r = 0.40, P = 0.04), and HF (r = 0.41, P = 0.03). Conclusion: Amongst the PD population, any changes in the parasympathetic component (responsible for bronchoconstriction) due to the underlying dysautonomia might be reflected as increased airway resistance in the pulmonary system.

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