NIRP-method versus ProSciCard-system in autonomic cardiac neuropathy in patients with diabetes mellitus

The periods derived from ECG (R-R-distance) by means of the ProSciCard-syst em and from microvascular blood volume pulsation by means of the NIRP-metho d (HEK-system) are agreeing with sufficient accuracy for the analysed appli cations in this investigation. There was found a closed correlation between heart and pulse rate (r=0,997) and heart and pulse rate variability (r=0,9 79), The NIRP-method is more advantageous, because it is possible by this m ethod to investigate the form of signal of blood volume pulsation additiona lly, so that is possible to derive peripheral circulatory parameters additi onally. Close to the rigidity and the raising of the heart rate in the tach ogram of heart periods and decreased heart rate variability in diabetic car diovascular autonomic neuropathy (CADN) it should be examined if there is a respiratoric sinus arrhythmia or not by means of deriving autocorrelationa l function of heart period duration, Just so tests of cardiac autonomic fun ction like the resting ventilation/hyperventilation and the Ewing-test are especially suitable. The last may be accomplished on tilt table without dis turbances. A simple possible classification of CADN is proposed whitch should be teste d in further investigations.