Chronobiological Analysis of Blood Pressure in a Patient with Atrial Fibrillation at the Development of Heart Failure and Its Therapeutic and Surgical Treatment
Figure 3
Spectra of electrocardiograms (ECG) in two persons. Left fragment: sinus rhythm in patient B; right one: atrial fibrillation in patient GSK. (a): global spectra of 9 minutes record. Abscissas: spectral components, below: frequency (Hz), and above: period length of oscillations (sec); ordinate: power (η 2) of spectral components (η 2 = ratio of described and general variances). ((b) and (c)); 3D gliding spectra of the same records. and (b): view from above (elevation = 90°); (c): view from aside (elevation, rotation, and perspective = 30°). Abscissa: time from starting records (sec), ordinate: frequency (Hz), and applicate: spectral power marked by different colors; blue: statistically not significant values, green components significant at , yellow: at , orange: at , and red: at .
