Etomidate/Propofol Mixture or Propofol Monotherapy Use in Patients Undergoing General Anesthesia

Study Overview
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Brief Summary
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The purpose of this study was to investigate the effects of different proportions of etomidate/propofol mixture and propofol alone intravenous anesthesia on intraoperative and postoperative physiological indicators and complications, and to find out the optimal use ratio of E/P mixture.

Detailed Description
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Propofol is one of the most commonly used intravenous anesthesia drugs clinically, the pharmacokinetic characteristics makes it very suitable for total intravenous anesthesia( TIVA), etomidate belongs to intravenous anesthesia with propofol, is a derivative of the imidazoles, its calm performance is strong, work quickly, no obvious respiratory depression, had little effects on the cardiovascular system, which, therefore, to protect the cardiovascular, maintain hemodynamic stability has a certain advantage. Our previous project showed that propofol and etomidate combined application can maintain stable hemodynamics in patients with better, reduce the occurrence of adverse reactions, can be used within 3 h of surgery anesthesia.The purpose of this study is to use propofol or etomidate/propofol mixture in combination with BIS monitoring to perform general anesthesia maintenance for patients, in order to ensure the appropriate depth of anesthesia, better maintain the hemodynamic stability of patients, reduce adverse reactions, and find the appropriate E/P mixture of the best proportion and dose.

Official Title
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Effects of Etomidate/Propofol Mixture or Propofol Monotherapy With Different Proportions on Circulation and Prognosis in Patients Undergoing General Anesthesia

Conditions
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Etomidate is Mixed With Propofol

Intervention / Treatment
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* Drug: Propofol 20 MG/ML
* Drug: Propofol 20 mg/ml , etomidate 2 mg/ml


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patients undergoing elective general anesthesia surgery in 3h; American Society of Anesthesiologists gradesⅠ III; Aged 18 to 65 years, Body Mass Index 18.5   29.9kg / m2; Hemoglobin 100   125g / L. In line with the ethics, the patients volunteered to take the test and signed the informed consent Exclusion Criteria: Identify or suspect abuse or chronic use of narcotic sedatives and analgesics; Heart, or liver, or lung, or kidney dysfunction; Body mass index> 30kg / m2; or <18.5kg / m2 Speech, hearing or mental disorders; severe diabetes, hyperkalemia ; participate in other drug clinical researches in four weeks; Poor compliance, can not complete clinical research by research program. Any cerebrovascular accident occurred within 3 months, such as stroke, TIA, etc Unstable angina and myocardial infarction occurred within 3 months; Having contraindications or allergies to experimental drugs and other narcotic drugs; Mental illness, hyperkalemia.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 65 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Prevention
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Placebo Comparator: Group A<br>Propofol 20 mg/ml, recommended anesthesia induction dose of 0.1 0.125 ml/kg, anesthesia maintenance pump speed of 0.2 0.5ml/kg/h. keep bispectral index within 40 # 60 | Drug: Propofol 20 MG/ML<br>* Pump propofol to keep bispectral index within 40 # 60<br>|
| Active Comparator: GroupB<br>EP1:3, that is, 10ml etomidate was mixed with 30ml propofol, the recommended anesthesia induction dose was 0.1-0.125ml /kg, and the anesthesia maintenance pump speed was 0.2-0.5ml /kg/h.keep bispectral index within 40 # 60.Propofol 20 mg/ml,etomidate 2mg/ml. | Drug: Propofol 20 mg/ml , etomidate 2 mg/ml<br>* Propofol was mixed with etomidate in different proportions.keep bispectral index within 40 # 60.<br>|
| Active Comparator: Group C<br>EP1:1, that is, 20ml etomidate was mixed with 20ml propofol, the recommended anesthesia induction dose was 0.1-0.125ml /kg, and the anesthesia maintenance pump speed was 0.2-0.5ml /kg/h.keep bispectral index within 40 # 60.Propofol 20 mg/ml,etomidate 2mg/ml. | Drug: Propofol 20 mg/ml , etomidate 2 mg/ml<br>* Propofol was mixed with etomidate in different proportions.keep bispectral index within 40 # 60.<br>|
| Active Comparator: Group D<br>EP3:1, that is, 30ml etomidate was mixed with 10ml propofol, the recommended anesthesia induction dose was 0.1-0.125ml /kg, and the anesthesia maintenance pump speed was 0.2-0.5ml /kg/h.keep bispectral index within 40 # 60.Propofol 20 mg/ml,etomidate 2mg/ml. | Drug: Propofol 20 mg/ml , etomidate 2 mg/ml<br>* Propofol was mixed with etomidate in different proportions.keep bispectral index within 40 # 60.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| blood pressure | the blood pressure is recorded (mmHg) | intraoperative | 
| heart rate | the heart rate is recorded(bpm) | intraoperative | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Perioperative complications | the incidence of injection pain #nausea and vomit#intraoperative awareness and postoperative agitation. | intraoperative | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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propofol, etomidate, General anesthesia, mixture