Post-induction hypotension
Conditions
Interventions
Experimental Group 1(IVC-CI):Group guided by inferior vena cava ultrasound (IVC-CI) for fluid resuscitation: Measure the patients inferior vena cava collapse index (IVC-CI) before surgery and group as
2. If IJV-CI < 40%, administer fluids at a rate of 4ml/kg·h before induction, and begin anesthesia induction after 10 minutes
control group(Traditional fluid replacement):Preoperatively, no ultrasound measurements or fluid resuscitation interventions are performed. According to the 421 rule, physiological needs and intraoper
Sponsors
The First Affiliated Hospital of Dalian Medical University
Eligibility
Sex/Gender
All
Age
65 Years to No maximum
Inclusion criteria
Inclusion criteria: 1. Patients scheduled to undergo elective total hip replacement surgery and femoral fracture reduction and internal fixation under general anesthesia at Dalian Medical University Affiliated First Hospital from October 2025 to October 2026; 2. Age >= 65 years; 3. ASA classification II-III; 4. Voluntarily sign an informed consent form;
Exclusion criteria
Exclusion criteria: 1. Anaphylactic shock;2. Patients predicted to have difficult airways, re-intubation, or prolonged intubation [defined as intubation time greater than 30 seconds]; 3. Overinflated lungs, such as in patients with asthma, respiratory distress syndrome, or chest deformities; 4. Chronic heart failure patients with LVEF 180/110 mmHg, with an interval of 1 minute;(7) inconsistent measurements of the same indicator at baseline (i.e., a difference of >0.2 cm between any two respiratory cycles out of three);(8) poor iliac fascia block effect (needling the front and lateral side of the thigh, with the patient reporting significant pain sensation).
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Blood pressure;Trans-thoracic echocardiographic indicators; | — |
Secondary
| Measure | Time frame |
|---|---|
| Blood gas analysis;Myocardial markers;Lung ultrasound B-lines; | — |
Countries
China
Contacts
Public ContactLv Meihong
The First Affiliated Hospital of Dalian Medical University
Outcome results
None listed