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Patients had invasive mechanical ventilation; vasoactive agent wasn’t used or had been evacuate | 是/Yes |
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sinus rhythm | 是/Yes |
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existing fluid infusion test contraindication (acute coronary syndrome, cardiogenic shock and evidence showing overload fluid) | 否/No |
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being obvious right ventricular dysfunction, right heart failure and tricuspid regurgitation | 否/No |
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being younger than 18 years old | 否/No |
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being gestation | 否/No |
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being intra-abdominal hypertension, bladder pressure measured by catheter ＞16cmH2O | 否/No |
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existing pneumothorax or pulmonary bulla Without drainage. | 否/No |
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the dispensability index of the inferior vena cava, dIVC | 18.25% |
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Stroke VolumeVariation, SVV | 14.66 |
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IVCdmax | 1.64 |
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Mean airway pressure | 5 |
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peak inspiratory pressure | 14 |
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cardiac output | 5.28 |
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CVP | 7 |
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Pulse Pressure Variation, PPV | 15.38 |
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peak inspiratory pressure | PEEP=0时，15；PEEP=5时，18；PEEP=10时，24；PEEP=15时，28. |
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Mean airway pressure | PEEP=0时，5；PEEP=5时，5.4；PEEP=10时，9.6；PEEP=15时，18. |
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IVCdmax | PEEP=0时，1.72；PEEP=5时，1.85；PEEP=10时，1.98；PEEP=15时，2.14. |
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CVP | PEEP=0时，7；PEEP=5时，98PEEP=10时，10；PEEP=15时，12. |
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the dispensability index of the inferior vena cava, dIVC | PEEP=0时，17.65%；PEEP=5时，16.68%；PEEP=10时，18.74%；PEEP=15时，16.32%. |
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Pulse Pressure Variation | PEEP=0时，15.37；PEEP=5时，18.28；PEEP=10时，20.18；PEEP=15时，22.75. |
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Stroke VolumeVariation, SVV | PEEP=0时，14.66；PEEP=5时，18.8；PEEP=10时，16.38；PEEP=15时，24.43. |
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cardiac output | PEEP=0时，6.24；PEEP=5时，6.1；PEEP=10时，5.82；PEEP=15时，5.1. |