PSI - Issue 40

V. Mironov et al. / Procedia Structural Integrity 40 (2022) 296–306 V. Mironov at al. / Structural Integrity Procedia 00 (2022) 000 – 000

304

9

Fig. 4. RCG and ECG during the clip installation on the aorta

In figure 5, at different variants of rhythm breaches at the beginning of the represented RCG record, asystole (AS) with a subsequent slow restoration of the rhythm without HRV wave structure was registered. Electrical defibrillation (ED) was carried out in asystole (AS).

Fig. 5. RCG and ECG during clip removal from the aorta (Also, massage of the heart restored cardiac activity with gradual formation of the atrial and the ventricular complexes on the normal ECG at the same time with the restoration of low-variable RCG.)

Initially, at primary RCG-research before CABGS, HRV reduction was defined, adequate to the severity of the pt’s status Mironov (2002), Mironova at al. (2000, 2009), selected for the cardiosurgical myocardial revascularization. Besides, there were HRV fragments during ischemic episodes, such as HRV stabilization, and in pts with ACN without any wave structure on all the RCGs. During angina pectoris, HRV stabilization began and ended with clinical symptoms of angina pectoris; measurements of RR intervals demonstrated the differences on the named fragments between the neighbouring RR intervals within 3. 55 ±1 .02 milliseconds during ischemic episodes Mironov (2002). ACN syndrome was presented by HRV stabilization in all positions without any fluctuations and without reactions in tests. These data were defined during measurement of each RR interval of the RCG stabilization