Immediate effect of Bhastrika Pranayama on cerebral hemodynamics in patient with depression: A case report

Abstract

Background

Depression is a common mental disorder with increasing prevalence in India, which involves cognitive impairment as well. Pharmacological management of depression has many adverse effects, which provides symptomatic relief to the patients, with little to no improvement in cognitive impairment or cerebral hemodynamics. This necessitates the exploration of complementary and alternative treatment modalities. Yoga, in particular Bhastrika pranyama, has been utilized as a complementary practice for various conditions, but evidence of its impact on depression and cerebral hemodynamics is limited.

Case details

A 66-year-old male, previously diagnosed with depression, was admitted to our inpatient hospital for a holistic approach to his condition, combining yoga and naturopathy as part of his treatment. During his stay, he participated in a ten-minute Bhastrika pranayama intervention, conducted under supervision. To evaluate cerebral hemodynamics, a 16-channel functional near-infrared spectroscopy (fNIRS) device was used and changes in oxygenated hemoglobin (oxyHb), deoxygenated hemoglobin (deoxyHb), and total hemoglobin (Total Hb) was recorded.

Results

Following the practice of Bhastrika Pranayama, the results indicated a rise in bilateral oxygenated hemoglobin (OxyHb) levels during and immediately after the practice, particularly in the prefrontal cortex region. Simultaneously, a decrease in deoxygenated hemoglobin (DeoxyHb) was observed during the practice, with a slight subsequent increase after the Bhastrika Pranayama session.

Conclusion

These preliminary findings indicate that Bhastrika pranayama may have an immediate positive impact on cerebral hemodynamics in patients with depression. Further research with larger sample sizes and controlled studies is needed to confirm and generalize these observations.