Comparative study of non-invasive hemodynamic monitoring using whole-body bioimpedance method and PICCO
Objective To compare non-invasive hemodynamic monitoring using the whole-body bioimped-ance method(NICaS)with pulse indicator continuous cardiac output(PICCO)monitoring in patients with sep-tic shock.To investigate the correlation and concordance between these two monitoring techniques,and evalu-ate the clinical reliability and application value of NICaS.Methods The study included 32 patients diagnosed with septic shock who required hemodynamic monitoring in the Emergency Intensive Care Unit of the First Af-filiated Hospital of Anhui Medical University from August 2021 to January 2024.A total of 64 data collections were performed.For each patient,PICCO and NICaS hemodynamic monitoring were conducted simultaneous-ly.Hemodynamic parameters including cardiac output(CO),cardiac index(CI),stroke volume(SV),stroke index(SI),systemic vascular resistance index(SVRI),and total peripheral resistance index(TPRI)were re-corded and analyzed for correlation between the two methods.Results Comparison of CO and CI measure-ments between NICaS and PICCO showed no statistically differences(P＞0.05).However,significant differ-ences were observed in SV,SI,TPRI and SVRI measurements(P＜0.05).Bland-Altman analysis of CO measurements showed a consistency range of-1.183 to 1.509 L/min,while Pearson correlation analysis re-vealed a strong correlation(r=0.954,P＜0.001)between the two methods.Conclusion NICaS demon-strates good consistency with PICCO in monitoring the hemodynamics of critically ill patients.With its sim-plicity,non-invasiveness,and convenience,NICaS can effectively monitor hemodynamic changes in critically ill patients.
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