A Comparison of Third-Generation Semi-Invasive Arterial Waveform Analysis with Thermodilution in Patients Undergoing Coronary Surgery

Table 1

Haemodynamic variables before (T1) and after (T2) cardiopulmonary bypass.

Variables	Pre-CPB	Post-CPB
	T1 (𝑛=245)	T2 (𝑛=223)	𝑃
HR (min^−1)	57 ± 3	80 ± 4	𝑃<0.05^#
MAP (mmHg)	76 ± 5	73 ± 10	𝑃<0.05^#
CVP (mmHg)	10 ± 2	9 ± 4	𝑃=0.11
SVRI (dynes·s/cm^5/m^2)	2370 ± 62	1966 ± 121	𝑃<0.05^#
CITPTD (L/min/m²)	2.4±0.6	2.8±0.6	𝑃<0.05^#
CIWave (L/min/m²)	2.4±0.5	2.8±0.6	𝑃<0.05^#

CPB: cardiopulmonary bypass; HR: heart rate; MAP: mean arterial pressure; CVP: central venous pressure; SVRI: systemic vascular resistance index; CI_TPTD: cardiac index by transpulmonary thermodilution; CI_Wave: cardiac index by semi-invasive pulse contour analysis; values are given as mean ± SD. ^#𝑃<0.05 (versus T1).