prone position surgery
Conditions
Interventions
Gold Standard:
Index test:
Sponsors
Peking University First Hospital
Eligibility
Sex/Gender
All
Age
18 Years to 65 Years
Inclusion criteria
Inclusion criteria: 1. aged >=18 years, regardless of gender and nation; 2. genenal anesthesia for elective, deadline or emergency prone surgery and the estimated duration of surgery >=2 hours; 3. the patient must agree of taking part in this trial and write informed consent.
Exclusion criteria
Exclusion criteria: 1. Patient who rejects to take part in this trial; 2. Arrhythmia: Atrial fibrillation ,Frequent atrial or ventricular premature; 3. Severe left or right heart dysfunction (LVEF?40%,the peak velocity of tricuspid <0.15m/s in systolic period); 4. Significant valve disease (moderate to severe regurgitation or stenosis); 5. Intracardiac shunt; 6. Invasive radical or femoral pressure can not reflect the true blood pressure such as severe stenosis of peripheral vascular and arteriosclerosis obliterans; 7. Those who are not suit for radical artery cannulation because of the positive result of Allens test and if there is an arteriovenous fistula; 8. Those who are not suit for central venous cannulation because of the implantation of ICD or PICC.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| stoke volume variation (SVV);cardiac output;central venous pressure;global end diastolic volume (GEDV);system vascular resistance index (SVRI); | — |
Secondary
| Measure | Time frame |
|---|---|
| Mean arterial pressure (MAP);heat rate (HR);the maximum of airway pressure (Pmax);the platform of airway pressure (Pplat);the end-tidal CO2 pressure (Pet-CO2);Bispectral Index (BIS); | — |
Countries
China
Contacts
Public ContactXiao Hu
Outcome results
None listed