TY - JOUR T1 - Transcutaneous Carbon Dioxide Treatment Affects Heart Rate Variability – A Pilot Study JF - In Vivo JO - In Vivo SP - 1259 LP - 1264 DO - 10.21873/invivo.11374 VL - 32 IS - 5 AU - ZITA KRESKA AU - BALÁZS NÉMETH AU - ISTVÁN KISS AU - IVÁN PÉTER AU - ZÉNÓ AJTAY AU - LÁSZLÓ HEJJEL Y1 - 2018/09/01 UR - http://iv.iiarjournals.org/content/32/5/1259.abstract N2 - Background: The aim of this study was to investigate the effects of carbon-dioxide treatment on heart rate variability (HRV) parameters: mean RR interval (RRI), standard deviation of RR intervals (SDNN), root mean square of successive RR differences (RMSSD); and Porta and Guzik indices, as measures of heart rate asymmetry. Materials and Methods: Twenty patients were enrolled (mean±SD, age=59±7.8 years). Measurements were performed before CO2 treatment, at the beginning of treatment, at 15 min of treatment, immediately after and 1 h after the treatment. Results: Significant increase in SDNN was found 1 h after the treatment when compared to that before it (p=0.011). There were no significant changes in other parameters. Conclusion: CO2 treatment can influence the autonomic nervous system identified by SDNN changes. However, larger studies are required to confirm these results. ER -