“…Similarly, following traumatic brain injury, there is a reduction in HRV and this is associated with a change in immune responses,24,25 whilst in patients treated for sepsis, reduced SDNN has been linked to poor outcome 12. The recent literature in decompensated cirrhosis patients has highlighted the pathophysiologic significance of systemic inflammatory response, as demonstrated by raised leucocyte counts and more recently elevated CRP, as being associated with poor outcome 10,26. Of interest, in this study, only SDNN was an independent predictor of mortality.…”