Ignite Creation Date:
2024-07-17 @ 11:22 AM
Last Modification Date:
2024-10-26 @ 3:33 PM
Study NCT ID:
NCT06477757
Status:
NOT_YET_RECRUITING
Last Update Posted:
2024-06-27
First Post:
2024-03-26
Brief Title:
Inflammatory Response and Oxidative Stress in Cardiac Surgery Min Invasive vs Conventional Extracorporeal Circulation
Sponsor:
University Medical Centre Maribor
Organization:
University Medical Centre Maribor
Study Overview
Official Title:
Oxidative Stress and Systemic Inflammatory Response After Cardiac Surgery Minimally Invasive Extracorporeal Circulation vs Conventional Extracorporeal Circulation
Status:
NOT_YET_RECRUITING
Status Verified Date:
2024-06
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
None
Brief Summary:
The goal of our research project is to measure and compare oxidative stress markers and systemic inflammatory response in patients undergoing open heart surgery with either conventional or minimally invasive extracorporeal circulation as well as develop pharmacokinetic profiles of different oxidative stress markers for further research on inflammatory response after open heart surgery The main questions our study aims to answer are
Does the type of extracorporeal circulation affect the levels of different oxidative stress markers
Can preoperative and postoperative oxidative stress marker levels be of prognostic values
Do preoperative and postoperative oxidative stress markers correlate with the clinical outcomes in patients
Researchers will compare the effect of conventional and minimally invasive extracorporeal circulation on clinical outcomes oxidative stress marker levels and systemic inflammatory response
Participants will be randomised into two groups one undergoing arrested-heart surgery with the use of conventional extracorporeal circulation and the second group undergoing arrested-heart surgery with the use of minimally invasive extracorporeal circulation and laboratory data oxidative stress markers and clinical data will be collected until discharge
Does the type of extracorporeal circulation affect the levels of different oxidative stress markers
Can preoperative and postoperative oxidative stress marker levels be of prognostic values
Do preoperative and postoperative oxidative stress markers correlate with the clinical outcomes in patients
Researchers will compare the effect of conventional and minimally invasive extracorporeal circulation on clinical outcomes oxidative stress marker levels and systemic inflammatory response
Participants will be randomised into two groups one undergoing arrested-heart surgery with the use of conventional extracorporeal circulation and the second group undergoing arrested-heart surgery with the use of minimally invasive extracorporeal circulation and laboratory data oxidative stress markers and clinical data will be collected until discharge
Detailed Description:
The overall project objective is to develop an accurate and simple analytical methods for quantification of specified oxidative stress biomarkers in biological samples that will provide easier diagnosis prognosis and therapeutic design in patients undergoing open heart surgery and a possible comparison between different therapeutic strategies in reducing oxidative stress
To achieve this goal the project will be divided into specific objectives
Assortment of specific reactive oxidative species and development of analytical protocols for these oxidative stress biomarkers using sophisticated analytical equipment
Quantification of specific oxidative stress biomarkers as indicators for oxidative stress before and after open heart surgery with the use of cardiopulmonary bypass
Prediction of the level of oxidative stress with specific oxidative stress biomarkers in patients undergoing arrested-heart cardiopulmonary bypass surgery
Statistical processing of the obtained data and implementation in clinical practice tailoring the extracorporeal circulation to an individual patient
Comparison of oxidative stress in patients undergoing open-heart surgery with the use of two different types of cardiopulmonary bypass techniques
State-of-the-art in the proposed field of research and survey of the relevant literature Recent studies on oxidative stress status have identified biomarkers as the potential to revolutionise medical science in terms of diagnosis prognosis and therapy Biomarkers have been identified for various diseases and disorders for example metabolic disorders cardiovascular disease myocardial infarctions neurological disorders etc The specific biomarkers can help in diagnosing the stress when the prognostic biomarkers are being explored for studying the progression or outcome of this stress-disease cascade and can predict the likelihood of occurrence of disease Recently many authors published reviews on oxidative stress and its biomarkers as well as their quantitative determination there are also some clinical studies but often these involve one type of biomarker Determination of these compounds from serum and plasma is challenging for every analytical technique and requires special precautions at the pre-analytical stage Recently various chromatographic methods have been used for substituting conventional spectrophotometric methods So far high pressure liquid chromatography HPLC liquid chromatography with tandem mass spectrometry LC-MSMS and gas chromatography-mass spectrometry GC-MS methods have proven to be specific and more sensitive for most oxidative stress OS biomarkers from biological material but there is still no method that is specific accurate sensitive and quantitative enough to measure biomarkers in biological samples and can be used in clinical diagnostics Since the identification of biomarkers is more reliable more correlations to certain diseases or disorders can be done especially in the field of cardiovascular diseases where the literature is scarce or non In this study robust and specific analytical methods for specific OS biomarkers will be developed and validated therefore understanding the mechanisms and timeline of OS biomarker levels after cardiac surgery
Cardiopulmonary bypass has been identified as an independent factor for systemic inflammatory response which potentially leads to hemodynamic instability multiple organ dysfunction and various complications resulting in a prolonged intensive care unit ICU and hospital stay One of the strategies to reduce the inflammatory response has been MiECC Regarding to the Minimal invasive Extra-Corporeal Technologies international Society MiECTiS to characterise a circuit as MiECC it must include a closed circuit biologically inert blood contact surfaces reduced priming volume a centrifugal pump a membrane oxygenator a heat exchanger a system for cardioplegia delivery a venous bubble trapvenous air removing device and a shed blood management system Several studies have been published measuring and comparing the inflammatory response in patients undergoing open heart surgery with either conventional cardiopulmonary bypass CCPB or MiECC Recent studies comparing MiECC group to conventional CPB showed lower C-reactive protein CRP and interleukin 6 and interleukin 8 levels in the MiECC group A study measuring oxidative stress markers in patients who underwent coronary artery bypass surgery with either MiECC CCPB or without the use of extracorporeal circuit off-pump coronary artery bypass - OPCAB revealed statistically significant decrease in malondialdehyde levels in MiECC and OPCAB when compared to CCPB which showed promising results on 30 patients included in their study Also malondialdehyde levels peak after a couple of hours after the surgery thus making the comparison of immune response to MiECC or CCPB even more interesting By increasing the number of blood samples a bigger study cohort and novel techniques of malondialdehyde analysis the investigators believe that potential prognostic values could be identified In recent years isoprostane has been identified as a promising biomarker of lipid peroxidation In a recent study in children with congenital heart defects undergoing cardiac surgery a rapid clearance of isoprostanes was associated with a better clinical outcome No studies up to date comparing the results of isoprostanes in patients undergoing CCPB or MiECC have been found Endocan a potential immunoinflammatory marker which reflects endothelial dysfunction could also be used as a potential prognostic marker for identifying groups of patients who would benefit most from MiECC Up to date two studies studying the kinetics of endocan after CCPB have been performed Comparing our results to other studies and adding MiECC to the equation could prove helpful to future studies using endocan as a prognostic marker
IMPORTANCE OF THE EXPECTED RESULTS
The research project entitled Oxidative stress and systemic inflammatory response after cardiac surgery minimally invasive extracorporeal circulation vs conventional extracorporeal circulation will efficiently contribute to the improvement of the quality of life since its focus will be on the detection of specific OS biomarkers and understanding the mechanisms and timeline of OS biomarker levels after cardiac surgery To the investigators knowledge this will be the first such comprehensive study that will include several biomarkers in the prediction of the level of oxidative stress in patients undergoing arrested-heart cardiopulmonary bypass surgery and compare two types of cardiopulmonary bypass circuits To establish this prediction OS biomarkers will be quantified using different chromatographic methods in tandem with mass spectrometry for the selective and efficient determination of these biomarkers Developed and validated analytical methods will be robust and efficient for method transfer in a clinical environment Obtained data will be statistically processed and implemented in clinical practice tailored to the extracorporeal circulation of individual patient
To achieve this goal the project will be divided into specific objectives
Assortment of specific reactive oxidative species and development of analytical protocols for these oxidative stress biomarkers using sophisticated analytical equipment
Quantification of specific oxidative stress biomarkers as indicators for oxidative stress before and after open heart surgery with the use of cardiopulmonary bypass
Prediction of the level of oxidative stress with specific oxidative stress biomarkers in patients undergoing arrested-heart cardiopulmonary bypass surgery
Statistical processing of the obtained data and implementation in clinical practice tailoring the extracorporeal circulation to an individual patient
Comparison of oxidative stress in patients undergoing open-heart surgery with the use of two different types of cardiopulmonary bypass techniques
State-of-the-art in the proposed field of research and survey of the relevant literature Recent studies on oxidative stress status have identified biomarkers as the potential to revolutionise medical science in terms of diagnosis prognosis and therapy Biomarkers have been identified for various diseases and disorders for example metabolic disorders cardiovascular disease myocardial infarctions neurological disorders etc The specific biomarkers can help in diagnosing the stress when the prognostic biomarkers are being explored for studying the progression or outcome of this stress-disease cascade and can predict the likelihood of occurrence of disease Recently many authors published reviews on oxidative stress and its biomarkers as well as their quantitative determination there are also some clinical studies but often these involve one type of biomarker Determination of these compounds from serum and plasma is challenging for every analytical technique and requires special precautions at the pre-analytical stage Recently various chromatographic methods have been used for substituting conventional spectrophotometric methods So far high pressure liquid chromatography HPLC liquid chromatography with tandem mass spectrometry LC-MSMS and gas chromatography-mass spectrometry GC-MS methods have proven to be specific and more sensitive for most oxidative stress OS biomarkers from biological material but there is still no method that is specific accurate sensitive and quantitative enough to measure biomarkers in biological samples and can be used in clinical diagnostics Since the identification of biomarkers is more reliable more correlations to certain diseases or disorders can be done especially in the field of cardiovascular diseases where the literature is scarce or non In this study robust and specific analytical methods for specific OS biomarkers will be developed and validated therefore understanding the mechanisms and timeline of OS biomarker levels after cardiac surgery
Cardiopulmonary bypass has been identified as an independent factor for systemic inflammatory response which potentially leads to hemodynamic instability multiple organ dysfunction and various complications resulting in a prolonged intensive care unit ICU and hospital stay One of the strategies to reduce the inflammatory response has been MiECC Regarding to the Minimal invasive Extra-Corporeal Technologies international Society MiECTiS to characterise a circuit as MiECC it must include a closed circuit biologically inert blood contact surfaces reduced priming volume a centrifugal pump a membrane oxygenator a heat exchanger a system for cardioplegia delivery a venous bubble trapvenous air removing device and a shed blood management system Several studies have been published measuring and comparing the inflammatory response in patients undergoing open heart surgery with either conventional cardiopulmonary bypass CCPB or MiECC Recent studies comparing MiECC group to conventional CPB showed lower C-reactive protein CRP and interleukin 6 and interleukin 8 levels in the MiECC group A study measuring oxidative stress markers in patients who underwent coronary artery bypass surgery with either MiECC CCPB or without the use of extracorporeal circuit off-pump coronary artery bypass - OPCAB revealed statistically significant decrease in malondialdehyde levels in MiECC and OPCAB when compared to CCPB which showed promising results on 30 patients included in their study Also malondialdehyde levels peak after a couple of hours after the surgery thus making the comparison of immune response to MiECC or CCPB even more interesting By increasing the number of blood samples a bigger study cohort and novel techniques of malondialdehyde analysis the investigators believe that potential prognostic values could be identified In recent years isoprostane has been identified as a promising biomarker of lipid peroxidation In a recent study in children with congenital heart defects undergoing cardiac surgery a rapid clearance of isoprostanes was associated with a better clinical outcome No studies up to date comparing the results of isoprostanes in patients undergoing CCPB or MiECC have been found Endocan a potential immunoinflammatory marker which reflects endothelial dysfunction could also be used as a potential prognostic marker for identifying groups of patients who would benefit most from MiECC Up to date two studies studying the kinetics of endocan after CCPB have been performed Comparing our results to other studies and adding MiECC to the equation could prove helpful to future studies using endocan as a prognostic marker
IMPORTANCE OF THE EXPECTED RESULTS
The research project entitled Oxidative stress and systemic inflammatory response after cardiac surgery minimally invasive extracorporeal circulation vs conventional extracorporeal circulation will efficiently contribute to the improvement of the quality of life since its focus will be on the detection of specific OS biomarkers and understanding the mechanisms and timeline of OS biomarker levels after cardiac surgery To the investigators knowledge this will be the first such comprehensive study that will include several biomarkers in the prediction of the level of oxidative stress in patients undergoing arrested-heart cardiopulmonary bypass surgery and compare two types of cardiopulmonary bypass circuits To establish this prediction OS biomarkers will be quantified using different chromatographic methods in tandem with mass spectrometry for the selective and efficient determination of these biomarkers Developed and validated analytical methods will be robust and efficient for method transfer in a clinical environment Obtained data will be statistically processed and implemented in clinical practice tailored to the extracorporeal circulation of individual patient
Study Oversight
Has Oversight DMC:
None
Is a FDA Regulated Drug?:
False
Is a FDA Regulated Device?:
False
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?:
None