None
Conditions
Interventions
Remifentanil Group:Remifentanil at a dose of 0.5 µg/kg (diluted to 5 ml) was administered for preconditioning before anesthesia induction, with the injection completed within 5 seconds. One minute aft
Normal Saline Group:Five milliliters of normal saline was administered for preconditioning prior to anesthesia induction, with the injection completed within 5 seconds. One minute after preconditionin
Sponsors
China-Japan Union Hospital of Jilin University
Eligibility
Sex/Gender
All
Age
60 Years to 85 Years
Inclusion criteria
Inclusion criteria: 1.Patient age range: 60–85 years old 2. Body Mass Index (BMI) range: 18.5–28 kg/m² 3. American Society of Anesthesiologists (ASA) physical status classification: Class I–III 4. Urological surgery
Exclusion criteria
Exclusion criteria: 1. Severe dysfunction of heart, lung, liver, kidney or other vital organs 2. Involuntary participation in this study 3. Hypersensitivity to anesthetic drugs 4. Presence of mental disorders or inability to cooperate
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Mean Arterial Pressure;Heart Rate; | — |
Secondary
| Measure | Time frame |
|---|---|
| Cough; | — |
Countries
China
Contacts
Public ContactZhou Hui
China-Japan Union Hospital of Jilin University
Outcome results
None listed