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Fig. 4 | Critical Care

Fig. 4

From: Surface EMG-based quantification of inspiratory effort: a quantitative comparison with Pes

Fig. 4

The \({\mathrm{ETP}}_{\mathrm{di}}\)\({\mathrm{PTP}}_{\mathrm{mus}}\) relation in three selected patients with \(\textit{K}_{\mathrm{EMG}}\) ranging from \({1.8}\,{\hbox {cm}\hbox {H}_{2}\hbox {O}/\upmu \hbox {V}}\) to \({6.1}\,{\hbox {cm}\hbox {H}_{2}\hbox {O}/\upmu \hbox {V}}\). In all three patients, biases were small (the absolute value of \(\textit{P}_{\mathrm{bias}}\) was smaller than \({0.6}\,{\hbox {cm}\hbox {H}_{2}\hbox {O}}\)) and biases were removed in this plot via the term \(\textit{P}_{\mathrm{bias}}\cdot \textit{T}_{\mathrm{i}}\). The correlations between \({\mathrm{ETP}}_{\mathrm{di}}\) and \({\mathrm{PTP}}_{\mathrm{mus}}\) were \(\textit{r}= 0.94\) (dark green), \(\textit{r}= {0.95}\) (orange) and \(\textit{r}= {0.86}\) (blue)

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