Continuous Estimation of Cardiac Output in Critical Care: A Noninvasive Method Based on Pulse Wave Transit Time Compared with Transpulmonary Thermodilution

Table 2

Subgroups are listed in columns, and parameters are provided from correlation, the Bland–Altman analysis, and the trending analysis.

	Patients with sepsis	Patients with polytrauma	Patients with no sepsis/no polytrauma
Count (number of patients) n	13	6	18
Correlation coefficient r ( value)	0.813 (0.001)	0.645 (0.166)	0.669 (0.002)
Bias, l/min	1.52	1.10	1.77
Lower limit of agreement, l/min	−2.08	−1.44	−1.81
Upper limit of agreement, l/min	+5.12	+3.63	+5.34
Percentage error, (%)	49	34	53
Correlation coefficient r of trends ( value)	0.353 (0.286)	0.470 (0.424)	0.317 (0.215)

n, number of patients.