- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02593448
Influence of Cardiopulmonary Bypass, and Sevoflurane or Propofol Anesthesia, on Tissue Oxygen Saturation.
Influence of Cardiopulmonary Bypass and Sevoflurane or Propofol Anesthesia on Tissue Oxygen Saturation of Thenar Muscle in Adults.
The purpose of the present study is to assess, by near infrared spectroscopy with INVOS oximeter during vascular occlusion test (VOT), the influence of cardiopulmonary bypass on tissue saturation in thenar muscle.
The secondary aim is to compare the effects of propofol and sevoflurane anaesthesia on tissue saturation.
It is a prospective, randomized, open-label study. Sixty cardiac surgery patients will receive either propofol or sevoflurane anaesthesia. Three-minute VOT will be performed at the following time points: 30 minutes after anaesthesia induction, directly after sternotomy, 20 and 40 minutes after aortic cross-clamping, 20 minutes after aortic cross-clamp removal, and 45 minutes after weaning of cardiopulmonary bypass (CPB).
Group and time effects on tissue saturation will be analysed with ANOVA and post hoc Tukey's test.
Study Overview
Status
Conditions
Detailed Description
Study Type
Enrollment (Actual)
Phase
- Phase 4
Contacts and Locations
Study Locations
-
-
Pomorskie
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Gdańsk, Pomorskie, Poland, PL 80-211
- Medical University of Gdańsk, Department of Cardiac Anesthesiology
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- adult
- scheduled for elective, open-heart cardiac surgical operation with use of cardiopulmonary bypass.
- signed written consent
Exclusion Criteria:
- surgeon's intention to use the radial artery for arterial bypass
- symptoms of peripheral atherosclerosis
- paresis of a limb
- autoimmune disease
- other factors that could potentially affect blood flow in the upper extremities
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Active Comparator: Propofol
General anaesthesia with Propofol use. Maintenance of anaesthesia in group P will be accomplished using continuous intravenous infusion of propofol 2-4 mg kg/h. Propofol infusion rate will be adjusted according to patient's haemodynamic parameters and the level of anaesthesia, as assessed with Bispectral Index (BIS), with a target range of 40-60. Intervention: NIRS during VOT on several timepoints. |
Near infrared spectroscopy with INVOS oximeter during vascular occlusion test (VOT) on following timepoints:
Premedication: lorazepam 50 μg kg-1, omeprazole 40 mg, and metoprolol 12.5 mg one hour before transport to the operating theatre. Anaesthesia induction: 0.2 mg fentanyl, 0.3 mg/kg, etomidate, and vecuronium bromide 0.1 mg/kg for muscle relaxation, followed by a continuous infusion at the rate of 0.05 mg/kg/h until the sternum closure. Intraoperative analgesia: fentanyl in fractions, up to the total dose of 20-30 μg/kg. Maintenance of anaesthesia in 'Propofol' group will be accomplished using continuous intravenous infusion of propofol 2-4 mg kg/h. Propofol infusion rate will be adjusted according to patient's haemodynamic parameters and the level of anaesthesia, as assessed with Bispectral Index (BIS), with a target range of 40-60.
Other Names:
|
Experimental: Sevoflurane
General anaesthesia with sevoflurane use. Sevoflurane concentration in exhaled gas will be adjusted according to patient's haemodynamic parameters and the level of anaesthesia, as assessed with BIS, with a target range of 40-60. Intervention: NIRS during VOT on several timepoints. |
Near infrared spectroscopy with INVOS oximeter during vascular occlusion test (VOT) on following timepoints:
Premedication: lorazepam 50 μg kg-1, omeprazole 40 mg, and metoprolol 12.5 mg one hour before transport to the operating theatre. Anaesthesia induction: 0.2 mg fentanyl, 0.3 mg/kg, etomidate, and vecuronium bromide 0.1 mg/kg for muscle relaxation, followed by a continuous infusion at the rate of 0.05 mg/kg/h until the sternum closure. Intraoperative analgesia: fentanyl in fractions, up to the total dose of 20-30 μg/kg. Sevoflurane concentration in exhaled gas will be adjusted according to patient's haemodynamic parameters and the level of anaesthesia, as assessed with BIS, with a target range of 40-60.
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Changes in thenar muscle saturation
Time Frame: During VOT performed at 6 timepoints
|
Thenar muscle tissue saturation was continuously monitored using an INVOS NIRS monitor (INVOS-YM 5100C Cerebral Somatic Oximeter, Covidien, Mansfield, USA). Thenar muscle saturation was measured during VOT 30 minutes after anaesthesia induction, which will be regarded baseline value. At five another timepoints VOT was performed and changes in thenar muscle saturation were measured:
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During VOT performed at 6 timepoints
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Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Alexandra Biedrzycka, M.D., Ph.D., Medical University of Gdańsk, Department of Cardiac Anesthesiology
Publications and helpful links
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- NKBN/34/2012
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