[Synchronous automated analysis of a spirogram and cardiac intervalogram]
Meditsinskaia Tekhnika
|August 28, 1999
Abstract:
The paper deals with the functional diagnosis based on the synchronous analysis of a spirogram and a cardiac intervalogram (CIG) by evaluating respiratory sinus arrhythmia (RSA). A method based on the calculation of R-R interval differences in separate breathing cycles is used for automated reckoning of RSA. A band-pass filter is employed to separate out a respiratory constituent of CIG. The programmed algorithmic use of the method is based on a linear selective transformation that is a general procedure for morphological analysis of cardiac signals in real time.
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