None listed
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1. Aged 18~65 years old, ASA I-II; 2. No obvious abnormal cardiorespiratory function; 3. No obvious abnormal liver and kidney function; 4. There is no such thing as pneumothorax, aneurysm, cerebral hernia and other diseases that can cause serious consequences.
Exclusion criteria
Exclusion criteria: 1. Hypertension and taking angiotensin converting enzyme inhibitors; 2. Bronchial asthma or chronic obstructive pulmonary disease;There are upper respiratory tract infections and coughs in the last two weeks; 3. Obesity, liver, renal dysfunction; 4. The induction period, such as ephedrine, atropine and tracheal intubation time of more than 30s or repeatedly intubation; 5. No informed consent was signed.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| cough times; | — |
Secondary
| Measure | Time frame |
|---|---|
| The blood pressure;Heart rate;Pulse oxygen saturation; | — |
Countries
China
Contacts
The First Affiliated Hospital of Harbin Medical University