The differences between NICO monitor and TEE measurements in patients without TR and in those with mild and with moderate-to-severe TR were -0.17 +/- 0.88 (n = 150, r (2) = 0.75), -0.16 +/- 0.82 (n = 158, r (2) = 0.78), and 0.17 +/- 0.91 L/min (n = 155, r (2) = 0.78), respectively. The differences between bolus thermodilution cardiac output and TEE measurements in patients without TR and in those with mild and with moderate-to-severe TR were -0.08 +/- 0.55 (r (2) = 0.88), 0.05 +/- 0.61 (r (2) = 0.86), and 0