Abnormal Cerebrovascular Reactivity in Parkinson’s Disease

الملخص EN

We read with great interest the recent original article by Camargo et al.

[1] titled “Abnormal Cerebrovascular Reactivity in Patients with Parkinson’s Disease.” Authors observed that patients with Parkinson’s disease (PD) have impaired cerebrovascular reactivity (CVR) as compared to those without orthostatic hypotension (OH) and to the control subjects.

Also, authors have reported that there was not any significant difference between the Breath Holding Index (BHI) of control and patients with PD but without OH.

This observation should be interpreted with caution because of important potential limitations of the study.