None
Conditions
Interventions
Observation group:None
Sponsors
The First Affiliated Hospital of Chongqing Medical University
Eligibility
Sex/Gender
All
Age
18 Years to 70 Years
Inclusion criteria
Inclusion criteria: 1. Patients undergoing elective laparoscopic partial hepatectomy. 2. Aged 18 to 70 years, with no gender restriction. 3. American Society of Anesthesiologists (ASA) physical status Grade I to III. 4. No severe cardiopulmonary dysfunction, severe skin allergy, or other underlying medical conditions. 5. All included patients have signed written informed consent.
Exclusion criteria
Exclusion criteria: 1. Obese patients with a body mass index (BMI) > 30 kg/m². 2. Severe valvular heart disease, cardiac arrhythmia, coagulation dysfunction, superior vena cava syndrome, left ventricular ejection fraction (LVEF) < 50%, or presence of ventricular wall motion abnormalities. 3. Contraindications to transesophageal echocardiography (TEE), including visceral perforation, esophageal stricture, esophageal tumor, esophageal perforation or laceration, esophageal diverticulum, and active upper gastrointestinal bleeding. 4. Severe pulmonary disease or previous pulmonary surgery. 5. Difficulty in obtaining adequate ultrasound images.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Central venous pressure;Jugular vein velocity-time integral; | — |
Secondary
| Measure | Time frame |
|---|---|
| Stroke Volume Variation;Pulse Pressure Variation;jugular vein velocity;Jugular vein index; | — |
Countries
China
Contacts
Public ContactWei Ke
The First Affiliated Hospital of Chongqing Medical University
Outcome results
None listed