Fluid responsiveness
Conditions
Interventions
Gold Standard:Fluid responsiveness was defined as a 15% or more increase in stroke volume index.
blood 
flow 
and 
?Vpeak
Sponsors
The Affiliated Suzhou Hospital of Nanjing Medical University
Eligibility
Sex/Gender
All
Age
65 Years to 85 Years
Inclusion criteria
Inclusion criteria: From April to October 2020, patients undergoing elective gastrointestinal surgery. Aged 65-85 years, ASA physical status class of I-III, heart function Level 1, BMI 18-30kg/m2.
Exclusion criteria
Exclusion criteria: 1. Carotid artery stenosis>50%, systolic blood pressure higher than 160 mm Hg, non-sinus rhythm, valvular heart disease, left ventricular ejection fraction < 50%; 2. Right heart failure, COPD, pulmonary hypertension, chronic kidney disease.
Design outcomes
Secondary
| Measure | Time frame |
|---|---|
| blood pressure;Heart rate; | — |
Primary
| Measure | Time frame |
|---|---|
| carotid artery corrected flow time;Stroke volume index;Carotid artery peak velocity variation rate; | — |
Countries
China
Contacts
Public ContactQian Xiaobo
The Affiliated Suzhou Hospital of Nanjing Medical University
Outcome results
None listed