Assessment of Autonomic Co-regulation Between Newborn and Parent During Kangaroo Care Sessions in Neonatal Intensive Care Units

The ECG signal, respiration rate, SpO2 and NIPΣ or ANI are recorded simultaneously on a computer with a capture card. The other indices of HRV will be analyzed offline: SDNN (standard deviation of all NN intervals), pNN30 (NN30 count divided by the total number of all NN intervals), pNN50 (NN50 count divided by the total number of all NN intervals), RMSSD (quadratic mean of successive R-R intervals), SD1 (standard deviation), SD2 (standard deviation), LF (low frequencies), HF (high frequencies), VLF (very low frequencies), SDANN (standard deviation of the averages of NN intervals in all 5 min segments of the entire recording), ratio LF/ HF, Ptot, Poincaré plot (plot points corresponding to each R-R space of a record).