Surgical disease
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1. age: elder than 65 years, ASA 3 or more for comobidity such as diabetes mellitus, kidney disease,pulmonary disease,cardiovascular disease and etc.; 2. Operation duration more than 2 hours or presumed blood loss more than 800ml.
Exclusion criteria
Exclusion criteria: 1. Arhythmia,intracardial shunt; 2. Intolerance of tidal volume 8ml/kg with mechanical ventilation; 3. Renal failure and need for dialysis; 4. Thoracotomy; 5. Laparoscopic surgery; 6. Refusal of consent.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| ECG, ABP, CVP, SpO2, EtCO2, temporature, urine,; | — |
Contacts
First Hospital of Peking University