A Clinical Case Demonstrating the Possible Application of the Separate Registration of Nostril Respiration in Neurology

Abstract

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.

Dynamics and periods in the nasal cycle during night sleep by separate measurement of nostril respiration

“…-, where the nasal cycle can serve as an indicator of conscious states of the brain 18,19 . In the previous study, the author and co-authors have shown that the recovery of a sick 90-year-old woman with a stroke is accompanied by a transition to a normal nasal cycle 17 . In the case of sick patients, the study of the nasal cycle is also of interest in parallel with other already established methodologies (EEG, EOG, ECG) in the case of patients with metabolic diseases 20 .…”

“…The issue of REM/NCR duration is also new and has not been discussed in the scientific literature. For the nasal cycle during sleep, there are a limited number of publications, and in some of them only the final results are given without publication of the primary records 5,10,16,17 . From the records it can be seen that, after each REM stage, the changes in the amplitude of the nasal cycle are registered (although after each REM stage no NCR is performed).…”