Critically disease
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: (1) patients in the ICU; (2) intrahospital transport to diagnostic tests; (3) without the artificial airway; (4) without sedation and RASS score 0-1.
Exclusion criteria
Exclusion criteria: (1) age <18 years; (2) pregnant or lactating women; (3) patients are known to be allergic to the study drugs or other contraindications; (4) patients can not be given drugs according to the study design, such as MRI; (5) alcoholism, long-term use of sedatives and opioid addicts; (6) MAP <55mmHg or left ventricular ejection fraction <30% although the optimalfluid resuscitation and vasoactive drugs therapy. (7) HR <50/min; (8) uncontroled arrhythmias, such as ?or ? atrioventricular block; (9) acute coronary syndrome (such as unstable angina, acute myocardial infarction); (10) serious internal environment disorder: K + = 5.5, pH <7.2; (11) patients who need emergency treatment or rescue; (12) consent of the patients or their family members can not be obtained; (13) patients who were included in the study once or being in other studies which may affect the study.
Countries
China