Effect of Carotid Ultrasound-guided Fluid Management on Anesthetic-induced Hypotension in Elderly Patients Undergoing Gastrointestinal Surgery
Hypotension on Induction
About this trial
This is an interventional prevention trial for Hypotension on Induction
Eligibility Criteria
Inclusion Criteria: Age 60-80 years old gender unlimited ASA: Grade I-Ⅲ BMI:18-30kg/㎡ Patients undergoing elective gastrointestinal surgery under general anesthesia Informed consent Exclusion Criteria: Carotid artery stenosis ≥50% Patients with heart valve disease Patients with left ventricular ejection fraction < 50% Patients with cardiac dysfunction (NYHA grade Ⅲ-Ⅳ and/or NTproBNP≥900pg/ml) Patients Combined with renal insufficiency (creatinine ≥178μmol/L, and/or blood urea nitrogen > 9mmol/L) Preoperative systolic blood pressure> 160mmHg or diastolic blood pressure > 100mmHg Refuse to participate in the test Patients participating in other clinical trials
Sites / Locations
- China,Chongqing The First Affiliated Hospital of Chongqing Medical UniversityRecruiting
Arms of the Study
Arm 1
Arm 2
Experimental
No Intervention
B-Carotid ultrasound guided fluid therapy
C-No intervention
Participants will use carotid ultrasound to assess volume status. If volume is insufficient, fluid therapy will be selected until volume is sufficient, anesthesia will be then induced. If volume is sufficient, anesthesia will be directly induced.
No carotid ultrasound will be used to assess the volume status of the patients, and anesthesia will be directly induced.