Gastric cancer, rectal cancer, colon cancer, etc
Conditions
Interventions
Gold Standard:Changes of cardiac output SV before and after infusion
of 
blood 
flow 
time
Sponsors
Affiliated Hospital of North Sichuan Medical College
Eligibility
Sex/Gender
All
Age
18 Years to 65 Years
Inclusion criteria
Inclusion criteria: ASA grade I~II, preoperative general anesthesia patients with intestinal preparation, aged 18 ~65 years
Exclusion criteria
Exclusion criteria: 1. Severe arrhythmia; 2. Carotid artery stenosis, >50%, aneurysm, artery dissection, artery embolization; 3. Heart disease, pulmonary hypertension, EF<50%; 4. Younger than 18 years old; 5. Non-general anesthesia; 6. Severe peripheral vascular disease; 7. Chronic kidney disease; 8. Chronic obstructive pulmonary disease; 9. Difficulty in ultrasonic measurement; 10. The pregnancy.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Carotid corrected blood flow time;ultrasonic cardiogram; | — |
Countries
China
Contacts
Public ContactFaping Tu
Affiliated Hospital of North Sichuan Medical College
Outcome results
None listed