Effect of Dexmedetomidine on Levels of Plasma Inflammatory Factor in Asthma Patients Undergoing General Anesthesia

Exclusion Criteria

• •SBP≥180 mmHg or \<90 mmHg, DBP≥110 mmHg or \<60 mmHg.
• •Serious heart, brain, liver, kidney, lung, endocrine diseases or serious infections.
• •Hematopoietic dysfunction or bleeding tendency and hemorrhagic disease.
• •A neuromuscular system disease.
• •Airway and lung surgery.
• •Predict possible or happened difficult airway.
• •Immune function defect.
• •Sure/suspected abuse of narcotic analgesics or drugs or alcohol dependence.
• •The test drug allergy or have other contraindications in patients.
• •Childbearing age women not to take appropriate contraception, pregnancy or lactation.
• •Participated in other clinical drug research in the last 30 days.