Harmonics tracking of intracranial and arterial blood pressure waves.
Considering cardiorespiratory interaction and heart rate variability, a new approach is proposed to decompose intracranial pressure and arterial blood pressure to their different harmonics. The method is based on tracking the amplitudes of the harmonics by a Kalman filter based tracking algorithm. The algorithm takes benefit of combined frequency estimation technique which uses both Fast Fourier Transform and RR-interval detection. The result would be of use in intracranial pressure and arterial blood pressure waveform analysis as well as other investigations which need to estimate contribution of specific harmonic in above mentioned signals such as Pressure-Volume Compensatory Reserve assessment.
Shahsavari
Sima
S
Department of Signals and Systems, Chalmers University of Technology, Sweden. shahsava@chalmers.se
McKelvey
Tomas
T
D000465:Algorithms; D001794:Blood Pressure / Q000502:physiology; D001930:Brain Injuries / Q000175:diagnosis / Q000503:physiopathology*; D002550:Cerebral Veins / Q000502:physiology; D003936:Diagnosis, Computer-Assisted / Q000379:methods; D001330:Electronic Data Processing; D005583:Fourier Analysis; D006801:Humans; D007427:Intracranial Pressure / Q000502:physiology*; D010812:Physical Stimulation; D012815:Signal Processing, Computer-Assisted; D014690:Venous Pressure / Q000502:physiology