hypotension
Conditions
Interventions
Control group:Rehydrate according to '421 rehydration method'
Experimental group:For patient with insufficiency of blood volume, 250ml hydroxyethyl starch was given and transfused in 10 minutes. Measure ICV-CI again until the rehydration is normal, and then rehy
Sponsors
The First Affiliated Hospital of Shihezi University Medical College
Eligibility
Sex/Gender
All
Age
18 Years to 89 Years
Inclusion criteria
Inclusion criteria: Patients undergoing elective anesthesia surgery; aged 65-89 years old; American Academy of anesthesiologists (ASA) grade I ~ II; BMI 18 <=25 kg/m2; patients and their families knew and signed informed consent; patients were conscious and breathing autonomously; patients volunteered to be measured; patients were not covered with gauze or bandages.
Exclusion criteria
Exclusion criteria: Emergency surgical patients;Peripheral vascular disease, severe cardiovascular disease, unstable angina pectoris or ejection fraction less than 40%; Patients with respiratory distress, increased abdominal pressure, expected airway or mental dysfunction; Patients with autonomic nervous system disease; Patients with implantable pacemakers or rhythm converters; Lower vena vena disease, hypertension patients taking angiotensin conversion enzyme inhibitors or angiotensin receptor antagonists; Preanesthetic basic SBP<90mmHg;Sudden change of vital signs before operation, life-threatening patients; Waist anesthesia taboos.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Diameter and collapse rate of inferior vena cava.;hypotension;Norepinephrine dosage; | — |
Secondary
| Measure | Time frame |
|---|---|
| cardiac output; | — |
Countries
China
Contacts
Public ContactZhang Yu
The First Affiliated Hospital of Shihezi University Medical College
Outcome results
None listed