Postoperative acute circulatory faiure Tidal volume Shock Stroke volume
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1. Postoperative adult patients with intermediate to high risk postoperative pulmonary complications ventilated with low tidal volume ventilation 2. Patients who had postoperative circulatory failure defined as one of the following; MAP 4 mmol/l, urine output < 0.5 ml/kg/hr at least one hour. 3. Patients who already had arterial line in place
Exclusion criteria
Exclusion criteria: 1. Limitation of PPV and SVV use 2. Pregnancy 3. Use of plateau pressure more than 30 cmH2O before inclusion
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The prediction of fluid responsiveness After inclusion The increase of stroke volume after fluid loading | — |
Secondary
| Measure | Time frame |
|---|---|
| The cut point of delta pulse pressure variation and stroke volume variation After inclusion The increase of stroke volume after fluid loading | — |