Left ventricular-arterial coupling is associated with prolonged mechanical ventilation in severe post-cardiac surgery patients: an observational study

Table 2 Comparison of hemodynamic parameters and tissue perfusion between the two groups

Variables	Times	Non-prolonged MV	n	Prolonged MV	n	P
HR bpm	T0	103 ± 15	30	110 ± 17	26	0.113
HR bpm	T1	97 ± 13	30	108 ± 13	26	0.018
SBP mmHg	T0	129 ± 17	30	129 ± 15	26	0.938
SBP mmHg	T1	131 ± 17	30	118 ± 22	26	0.014
CVP mmHg	T0	10.03 ± 2.80	30	11.08 ± 3.72	26	0.237
CVP mmHg	T1	10.59 ± 2.15	29	9.35 ± 2.55	26	0.055
P/F mmHg	T0	355.00 ± 172.43	30	291.65 ± 91.29	23	0.092
P/F mmHg	T1	293.90 ± 93.65	29	280.48 ± 120.81	25	0.648
T °C	T0	36.03 ± 0.79	30	35.87 ± 0.66	26	0.406
T °C	T1	36.78 ± 0.61	30	36.63 ± 0.72	26	0.319
Lac mmol/L	T0	5.56 ± 3.80	30	5.66 ± 3.99	23	0.928
Lac mmol/L	T1	1.46 ± 0.58	29	2.42 ± 1.24	25	< 0.001
CI L/min/m²	T0	2.89 ± 0.81	18	2.90 ± 0.87	17	0.988
CI L/min/m²	T1	2.82 ± 0.63	21	2.59 ± 0.80	21	0.318
SVI ml/m²	T0	27.12 ± 7.75	18	26.24 ± 8.04	17	0.887
SVI ml/m²	T1	29.52 ± 10.84	21	23.58 ± 6.75	21	0.049
SVRI dyn.sec.cm⁻⁵.m²	T0	2399.06 ± 1146.16	17	2255.71 ± 883.40	17	0.615
SVRI dyn.sec.cm⁻⁵.m²	T1	2260.71 ± 668.84	24	2309.76 ± 555.38	23	0.980
Ea mmHg/ml	T0	2.62 ± 1.07	18	2.86 ± 1.38	17	0.566
Ea mmHg/ml	T1	2.57 ± 1.22	21	2.93 ± 0.91	21	0.279
Ees mmHg/ml	T0	0.570 ± 0.175	18	0.523 ± 0.109	17	0.346
Ees mmHg/ml	T1	0.578 ± 0.179	21	0.461 ± 0.136	21	0.022
Ea/Ees	T0	4.39 ± 1.90	18	4.89 ± 1.80	17	0.423
Ea/Ees	T1	4.05 ± 1.20	21	5.93 ± 1.81	21	< 0.001

MV mechanical ventilation, HR heart rate, SBP systolic blood pressure, CVP central venous pressure, P/F PaO2/FiO2, T temperature, Lac lactate, CI cardiac output index, SVI stroke volume index, SVRI Systemic vascular resistance index, Ea arterial end-systolic elastance, Ees left ventricular end-systolic elastance, Ea/Ees ventricular arterial coupling, T0 at admission, T1 48 h after admission

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