Hypotension after induction of general anesthesia
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1. Patients undergoing elective gastrointestinal surgery 2. ASA classification: Grade II-III 3. Preservation of spontaneous respiration, without sedation and impaired consciousness, etc. 4. Age: 18-80 years old 5. No serious cardiovascular disease, respiratory disease, autonomic nervous system disease.
Exclusion criteria
Exclusion criteria: 1. Pre-operative presence of serious cardiopulmonary diseases 2. Pacemaker installers, arrhythmia patients 3. Preoperative application of beta-blocking drugs, vasoactive drugs, atropine, etc. 4. Severe neurosis, mental disorders that cannot be cooperated with, combined with the disease of abnormal function of the autonomic nervous system.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Heart Rate Variability;Heart Rate Deceleration Capacity; | — |
Secondary
| Measure | Time frame |
|---|---|
| Hemodynamic indicators; | — |
Countries
China
Contacts
Department of Anesthesiology, Qilu Hospital,Cheeloo College of Medicine, Shandong University, Jinan, China