Mivacurium Chloramine Muscle Relaxation Effect in Patients With Liver Cirrhosis

Inclusion Criteria: * Patients volunteered for the clinical research and signed a written informed consent * Experimental group patients is cirrhosis of the liver (liver function grade Child - Pugh, grade A) ready to abdominal surgery patients; The control group was no cirrhosis, ready to abdominal surgery patients * Aged 18 \~ 60 * BMI\<28kg/㎡ * The American society of anesthesiologists (ASA) class I \~ II Exclusion Criteria: * Systolic blood pressure ≥180 mm Hg or \< 90 mm Hg, diastolic blood pressure ≥110 mm Hg or \< 60 mm Hg * Serious heart, brain, liver, kidney, lung, endocrine diseases or serious infection * Patients with difficult airway (such as Mallampati airway class III, airway abnormalities, etc.) * HR \< 50 times/min * The patient had a history of mental illness or chronic psychiatric drugs, chronic pain medication history * History of alcoholism * Patients with neuromuscular system disease * Has a tendency to malignant hyperthermia * The patient used to test drug allergies or other contraindications * Over the past 30 days participated in other clinical drug research