clinical anesthesia
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1.Patients under general anesthesia with selective tracheal intubation 2.Aged 18 to 65 years old 3.Body mass index (BMI)8-24kg/m2 4.American Society of Anesthesiology (ASA) Class ?-? 5.There were no signs associated with difficult airway
Exclusion criteria
Exclusion criteria: 1.Long-term use of antiarrhythmic drugs or beta-blockers 2.Implant a pacemaker 3.Patients with pregnancy 4.Patients with mental illness and cognitive impairment 5.Long-term use of non-steroidal anti-inflammatory drugs, narcotic analgesics, or sedatives
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Cycle fluctuations; | — |
Countries
China
Contacts
Shiyan City People's Hospital, Hubei Province