| Summary: | Introduction: The registration of respiration through the left and right nostrils simultaneously makes it
possible to register the dynamics of the nasal cycle.
Aim: To test the method, the nasal cycle of a patient with ischemic stroke of the right posterior cerebral
artery territory was measured.
Method: An interface two-channel portable system has been developed for registration of respiration
separately through nostrils.
Results: The patient's respiratory and nasal cycle through the left and right nostril was measured for 4.5
hours for three consecutive days (4 days after coming out of the coma). The nasal cycle changed
progressively during the healing process. On the first day, an antiphase change in the amplitude of airflow
through the left and right nostril was registered with frequency 3 and 1.5 hours. They were accompanied
by pronounced somnolence. In the next two days, a nasal cycle reversal of the respiratory airflow through
the nostrils was observed. In the process of the patient’s recovery, a spontaneous alternative alternation of
equalized respiratory airflow through the two nostrils was observed. The patient's recovery was also
assessed on the NIHSS scale, whose values correlated over time with the normalization of the nasal cycle.
Conclusion: The method reflects the patient's recovery and can find application in neurology.
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