Myocardial Reperfusion InjurySEVO-DESNCT02866630
Coronary Sinus Blood Sevoflurane and Desflurane Concentration and Lactate Changes in Patients Undergoing Heart Surgery
An observational study of Myocardial Reperfusion Injury and Heart Diseases, run by University of Malaya.
Trial summary
In the last few years, anaesthetics gas such as isoflurane, desflurane and sevoflurane used in heart surgery have shown some benefits to reduce the risk of heart muscle damage than total intravenous anesthetics. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Myocardial Reperfusion Injury, Heart Diseases, Postoperative Complications
- What is being tested?
- Blood samples
- How many people
- 0 participants
- Where
- No sites listed yet
- Study dates
- 20 Jul 2017to Dec 2017
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: All patients who scheduled for an elective heart surgery in University Malaya Medical Centre involving the administration of sevoflurane or desflurane throughout the operation will be recruited in this study.
Who may be able to join
- Age 18 years or older
- Scheduled for elective cardiac surgery.
- Anaesthetised using sevoflurane or desflurane throughout the whole operation
- Patient has consented to participate
Who cannot join
- Emergency surgery or patient with malignancy
- Heart surgery undertaken without CPB
- Age younger than 18 years
- Unable or unwilling to provide informed consent
- Anaesthetised using total intravenous-based technique
About this study
In the last few years, anaesthetics gas such as isoflurane, desflurane and sevoflurane used in heart surgery have shown some benefits to reduce the risk of heart muscle damage than total intravenous anesthetics. A study by the investigators suggested that isoflurane needs a longer duration to achieve equilibrium between coronary sinus and radial artery, indicating that isoflurane in coronary sinus does not accurately reflect its level in the heart muscle. Different agents have unique characteristics with different equilibration rate. However, the levels of sevoflurane and desflurane in coronary sinus and radial artery have not been measured. In addition, lactate is believed to be a very useful indicator to predict the outcome of recovery phase after any surgery. This study aims to measure the level of sevoflurane or desflurane in blood circulation. It will also assess whether sevoflurane or desflurane concentration in the blood is correlated to the its oxygenator exhaust level and affected by temperature, haematocrit level and gas flow rate during heart-lung machine. It also aims to examine the association of lactate and the outcomes of cardiac patient in intensive care unit after cardiac surgery.
Read the detailed description
In recent years, many clinical trials have demonstrated the myocardial protective properties of volatile anaesthetic agent through a similar mechanism as ischaemic pre-conditioning. It is hypothesised that volatile anaesthetic agent promotes the generation of nitric oxide and reactive oxygen species, which then activates the adenosine receptor, and subsequently initiates the opening of mitochondrial potassium ion channel to minimise perioperative myocardial injury. Many researchers have studied the protective benefit of volatile anaesthesia in heart surgery that involves CPB machine over the last 10 years. In 2006, a meta-analysis of 27 clinical trials have demonstrated that patients receiving volatile anaesthesia either isoflurane, sevoflurane, desflurane or enflurane, experienced lesser myocardial injury, required shorter duration of mechanical ventilation and shorter hospital stay as compared to those tranquilised with a total intravenous anaesthesia technique.
In the administration of volatile anaesthetic agent, the literature review of optimal dosing and timing are not clinically well-established. Unpublished data from the investigators shows that isoflurane requires slightly longer duration to achieve equilibrium between coronary sinus and radial artery, indicating that coronary sinus isoflurane concentration does not accurately reflect its level in myocardium. Also, the temperature of CPB, haematocrit level and gas flow rate appeared to affect the plasma isoflurane concentration to a certain extent. In addition, the investigators only managed to look at isoflurane itself, where other types of volatile anaesthetics namely sevoflurane and desflurane have different nature characteristics and possibly yield to different findings. Furthermore, lactate is believed to be a useful indicator for the outcome of recovery post-operatively. However, it remains unknown that whether would the lactate levels change significantly before, during and after cardiac surgery.
Theoretically, the measurement of volatile anaesthetics concentration in the heart would require a biopsy of heart muscle. Able to identify the level of myocardial anaesthetic level from coronary sinus could be a non-invasive measurement for future studies to look at the optimal concentrations of volatile anaesthetics required to achieve its pharmacological ischaemic pre-conditioning to minimise myocardial damage perioperatively.
The main aim of this study is to determine the level of myocardial sevoflurane or desflurane concentration from coronary sinus blood sample that taken from a coronary sinus catheter, which is routinely inserted to administer retrograde cardioplegia solution instead of invasive biopsy method. This study will also examine the association between the coronary sinus sevoflurane or desflurane concentration and its oxygenator exhaust level during CPB and investigate the influence of temperature, gas flow rate and haematocrit level on plasma sevoflurane or desflurane concentrations. A secondary analysis aims to determine the changes of lactate levels before, during and after cardiac surgery, and the recovery outcomes of cardiac patients in intensive care unit.
- Being tested
- Blood samples
- Keywords
- Sevoflurane, Desflurane, Coronary Sinus, Oxygenator Exhaust, Lactate, Cardiopulmonary bypass
- Medical subject headings
- Myocardial Reperfusion Injury, Heart Diseases, Postoperative Complications
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Blood samplesBiological
Six additional blood samples will be taken from in-situ catheters during heart surgery
| Study group | Role | What they receive |
|---|---|---|
| Cardiopulmonary bypass (Sevoflurane) | All patients who scheduled for an elective heart surgery in University Malaya Medical Centre using a heart-lung machine and the administration of sevoflurane will be recruited in this study. The medical and surgical care plans for participants remain as usual in this study with an exception being six additional blood samples of about two-teaspoonful in volume will be collected from an in-placed catheters in vein and aorta. Receives: Biological: Blood samples | |
| Cardiopulmonary bypass (Desflurane) | All patients who scheduled for an elective heart surgery in University Malaya Medical Centre using a heart-lung machine and the administration of desflurane will be recruited in this study. The medical and surgical care plans for participants remain as usual in this study with an exception being six additional blood samples of about two-teaspoonful in volume will be collected from an in-placed catheters in vein and aorta. Receives: Biological: Blood samples |
What is being measured
The primary outcome is the main question the study is designed to answer.
The Concentration of Anaesthetics in Coronary Sinus and Radial Arterial
All blood samples will be analysed twice for sevoflurane or desflurane with a high performance gas chromatography and mass spectrometry detector (Thermo Scientific TSQ Ultra Triple Quadrupole GC-MS) with a Headspace Autosampler (TriPlus 300). Blood samples were quantified using an external calibration curve prepared in a controlled whole blood over a range of sevoflurane or desflurane concentrations. The reporting measurement unit for sevoflurane or desflurane concentration will be μgmL-1.
Measured: 1 weeks after blood samples taken
Secondary outcomes (2)
Oxygenator exhaust sevoflurane or desflurane levels on heart-lung machine
The measurement unit for oxygenator exhaust anaesthesia level will be in %, which is analysed by an infrared anaesthetic gas analyser.
Measured: 1 week after measurement of oxygenator exhaust isoflurane gas
Lactate levels before and after surgery
The measurement for lactate level will be in mmolL-1, which is analysed by lactate testing equipment in theatre.
Measured: Lactate measurement at 30 mins before and 1 hour after cardiac surgery
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted15 Aug 2016 (estimated)
- Study start20 Jul 2017 (estimated)
- Primary completionNov 2017 (estimated)
- Study completionDec 2017 (estimated)
Why it stopped: No facility to measure volatile anaesthetic concentration in human blood sample
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (8)Papers the sponsor has linked to this study.
- Other trials for Myocardial Reperfusion InjuryStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 0 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of Malaya
- Sponsor type
- University, hospital or other
- Collaborators
- University of Edinburgh
- Responsible party
- Sponsor
- Investigators
- Chew Yin Wang, FRCA (Eng), Principal investigator, University of Malaya
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02866630
- Sponsor's protocol ID
- UM-1
- Acronym
- SEVO-DES
- Status last verified
- Oct 2017
- First submitted
- 19 Jul 2016
- Last updated
- 26 Oct 2017
- Results posted
- No
- Data monitoring committee
- No
- Individual data sharing
- No
Publications
Belhomme D, Peynet J, Louzy M, Launay JM, Kitakaze M, Menasche P. Evidence for preconditioning by isoflurane in coronary artery bypass graft surgery. Circulation. 1999 Nov 9;100(19 Suppl):II340-4. doi: 10.1161/01.cir.100.suppl_2.ii-340.
PubMed 10567326Landoni G, Greco T, Biondi-Zoccai G, Nigro Neto C, Febres D, Pintaudi M, Pasin L, Cabrini L, Finco G, Zangrillo A. Anaesthetic drugs and survival: a Bayesian network meta-analysis of randomized trials in cardiac surgery. Br J Anaesth. 2013 Dec;111(6):886-96. doi: 10.1093/bja/aet231. Epub 2013 Jul 12.
PubMed 23852263Marco R. Cardiopulmonary bypass. In: Alston, RP, Myles, PS, Ranucci M, editor. Oxford Textbook of Cardiothoracic Anaesthesia. 1st ed. Oxford: Oxford University Press; 2015. p. 117-30.
Pramood, CK, Reena, S, Gajraj S. Ischemic and anesthetic preconditioning of the heart: an insight into the concepts and mechanisms. J Indian Acad Clin Med. 2005;6(1):45-7.
Yoshimi I. Cardiac preconditioning by anesthetic agents: roles of volatile anesthetics and opioids in cardioprotection. Yonago Acta Med. 2007;50:45-55.
Irwin, Michael G, Wong GT. Myocardial Protection During Cardiac Surgery. In: Alston, R Peter, Myles, Paul S, Ranucci M, editor. Oxford Textbook of Cardiothoracic Anaesthesia. 1st ed. Oxford: Oxford University Press; 2015. p. 157-63.
Symons JA, Myles PS. Myocardial protection with volatile anaesthetic agents during coronary artery bypass surgery: a meta-analysis. Br J Anaesth. 2006 Aug;97(2):127-36. doi: 10.1093/bja/ael149. Epub 2006 Jun 21.
PubMed 16793778Ng, KT, Alston, P. The Levels of Anaesthetics in Heart Muscle During Heart Surgery (TLAHMHS) [Internet]. ClinicalTrial.gov.my. 2015. Available from: https://clinicaltrials.gov/ct2/show/NCT02471001
Study at a glance
From the registry record, last updated by the sponsor on 26 Oct 2017. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Coronary Sinus Blood Sevoflurane and Desflurane Concentration and Lactate Changes in Patients Undergoing Heart Surgery
- ClinicalTrials.gov ID
- NCT02866630
- Acronym / sponsor ID
- SEVO-DES / UM-1
- Keywords
- Sevoflurane, Desflurane, Coronary Sinus, Oxygenator Exhaust, Lactate, Cardiopulmonary bypass
- Study type
- Observational
- Recruitment status
- WithdrawnReason stopped: No facility to measure volatile anaesthetic concentration in human blood sample
- Enrolment
- 0 participants (actual)
- Lead sponsor
- University of MalayaUniversity, hospital or other
- Collaborators
- University of Edinburgh
- Study start
- 20 Jul 2017 (estimated)
- Primary completion
- Nov 2017 (estimated)
- Study completion
- Dec 2017 (estimated)
- First posted
- 15 Aug 2016 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
In the last few years, anaesthetics gas such as isoflurane, desflurane and sevoflurane used in heart surgery have shown some benefits to reduce the risk of heart muscle damage than total intravenous anesthetics. A study by the investigators suggested that isoflurane needs a longer duration to achieve equilibrium between coronary sinus and radial artery, indicating that isoflurane in coronary sinus does not accurately reflect its level in the heart muscle. Different agents have unique characteristics with different equilibration rate. However, the levels of sevoflurane and desflurane in coronary sinus and radial artery have not been measured. In addition, lactate is believed to be a very useful indicator to predict the outcome of recovery phase after any surgery. This study aims to measure the level of sevoflurane or desflurane in blood circulation. It will also assess whether sevoflurane or desflurane concentration in the blood is correlated to the its oxygenator exhaust level and affected by temperature, haematocrit level and gas flow rate during heart-lung machine. It also aims to examine the association of lactate and the outcomes of cardiac patient in intensive care unit after cardiac surgery.
Detailed description
In recent years, many clinical trials have demonstrated the myocardial protective properties of volatile anaesthetic agent through a similar mechanism as ischaemic pre-conditioning. It is hypothesised that volatile anaesthetic agent promotes the generation of nitric oxide and reactive oxygen species, which then activates the adenosine receptor, and subsequently initiates the opening of mitochondrial potassium ion channel to minimise perioperative myocardial injury. Many researchers have studied the protective benefit of volatile anaesthesia in heart surgery that involves CPB machine over the last 10 years. In 2006, a meta-analysis of 27 clinical trials have demonstrated that patients receiving volatile anaesthesia either isoflurane, sevoflurane, desflurane or enflurane, experienced lesser myocardial injury, required shorter duration of mechanical ventilation and shorter hospital stay as compared to those tranquilised with a total intravenous anaesthesia technique.
In the administration of volatile anaesthetic agent, the literature review of optimal dosing and timing are not clinically well-established. Unpublished data from the investigators shows that isoflurane requires slightly longer duration to achieve equilibrium between coronary sinus and radial artery, indicating that coronary sinus isoflurane concentration does not accurately reflect its level in myocardium. Also, the temperature of CPB, haematocrit level and gas flow rate appeared to affect the plasma isoflurane concentration to a certain extent. In addition, the investigators only managed to look at isoflurane itself, where other types of volatile anaesthetics namely sevoflurane and desflurane have different nature characteristics and possibly yield to different findings. Furthermore, lactate is believed to be a useful indicator for the outcome of recovery post-operatively. However, it remains unknown that whether would the lactate levels change significantly before, during and after cardiac surgery.
Theoretically, the measurement of volatile anaesthetics concentration in the heart would require a biopsy of heart muscle. Able to identify the level of myocardial anaesthetic level from coronary sinus could be a non-invasive measurement for future studies to look at the optimal concentrations of volatile anaesthetics required to achieve its pharmacological ischaemic pre-conditioning to minimise myocardial damage perioperatively.
The main aim of this study is to determine the level of myocardial sevoflurane or desflurane concentration from coronary sinus blood sample that taken from a coronary sinus catheter, which is routinely inserted to administer retrograde cardioplegia solution instead of invasive biopsy method. This study will also examine the association between the coronary sinus sevoflurane or desflurane concentration and its oxygenator exhaust level during CPB and investigate the influence of temperature, gas flow rate and haematocrit level on plasma sevoflurane or desflurane concentrations. A secondary analysis aims to determine the changes of lactate levels before, during and after cardiac surgery, and the recovery outcomes of cardiac patients in intensive care unit.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Cardiopulmonary bypass (Sevoflurane) | – | Biological: Blood samplesAll patients who scheduled for an elective heart surgery in University Malaya Medical Centre using a heart-lung machine and the administration of sevoflurane will be recruited in this study. The medical and surgical care plans for participants remain as usual in this study with an exception being six additional blood samples of about two-teaspoonful in volume will be collected from an in-placed catheters in vein and aorta. |
| Cardiopulmonary bypass (Desflurane) | – | Biological: Blood samplesAll patients who scheduled for an elective heart surgery in University Malaya Medical Centre using a heart-lung machine and the administration of desflurane will be recruited in this study. The medical and surgical care plans for participants remain as usual in this study with an exception being six additional blood samples of about two-teaspoonful in volume will be collected from an in-placed catheters in vein and aorta. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- All patients who scheduled for an elective heart surgery in University Malaya Medical Centre involving the administration of sevoflurane or desflurane throughout the operation will be recruited in this study.
Key inclusion criteria (4 listed)
- Age 18 years or older
- Scheduled for elective cardiac surgery.
- Anaesthetised using sevoflurane or desflurane throughout the whole operation
- Patient has consented to participate
Key exclusion criteria (5 listed)
- Emergency surgery or patient with malignancy
- Heart surgery undertaken without CPB
- Age younger than 18 years
- Unable or unwilling to provide informed consent
- Anaesthetised using total intravenous-based technique
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Blood samplesSix additional blood samples will be taken from in-situ catheters during heart surgery | Biological | Cardiopulmonary bypass (Desflurane), Cardiopulmonary bypass (Sevoflurane) |
Primary outcome
The Concentration of Anaesthetics in Coronary Sinus and Radial Arterial
Time frame: 1 weeks after blood samples taken
All blood samples will be analysed twice for sevoflurane or desflurane with a high performance gas chromatography and mass spectrometry detector (Thermo Scientific TSQ Ultra Triple Quadrupole GC-MS) with a Headspace Autosampler (TriPlus 300). Blood samples were quantified using an external calibration curve prepared in a controlled whole blood over a range of sevoflurane or desflurane concentrations. The reporting measurement unit for sevoflurane or desflurane concentration will be μgmL-1.
2 secondary outcomes
Oxygenator exhaust sevoflurane or desflurane levels on heart-lung machine
Time frame: 1 week after measurement of oxygenator exhaust isoflurane gas
Lactate levels before and after surgery
Time frame: Lactate measurement at 30 mins before and 1 hour after cardiac surgery
Results and safety
The study was withdrawn before enrolling participants, so there are no results.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 26 Oct 2017.
- Background: PubMed 10567326Belhomme D, Peynet J, Louzy M, Launay JM, Kitakaze M, Menasche P. Evidence for preconditioning by isoflurane in coronary artery bypass graft surgery. Circulation. 1999 Nov 9;100(19 Suppl):II340-4. doi: 10.1161/01.cir.100.suppl_2.ii-340.
- Background: PubMed 23852263Landoni G, Greco T, Biondi-Zoccai G, Nigro Neto C, Febres D, Pintaudi M, Pasin L, Cabrini L, Finco G, Zangrillo A. Anaesthetic drugs and survival: a Bayesian network meta-analysis of randomized trials in cardiac surgery. Br J Anaesth. 2013 Dec;111(6):886-96. doi: 10.1093/bja/aet231. Epub 2013 Jul 12.
- BackgroundMarco R. Cardiopulmonary bypass. In: Alston, RP, Myles, PS, Ranucci M, editor. Oxford Textbook of Cardiothoracic Anaesthesia. 1st ed. Oxford: Oxford University Press; 2015. p. 117-30.
- BackgroundPramood, CK, Reena, S, Gajraj S. Ischemic and anesthetic preconditioning of the heart: an insight into the concepts and mechanisms. J Indian Acad Clin Med. 2005;6(1):45-7.
- BackgroundYoshimi I. Cardiac preconditioning by anesthetic agents: roles of volatile anesthetics and opioids in cardioprotection. Yonago Acta Med. 2007;50:45-55.
- BackgroundIrwin, Michael G, Wong GT. Myocardial Protection During Cardiac Surgery. In: Alston, R Peter, Myles, Paul S, Ranucci M, editor. Oxford Textbook of Cardiothoracic Anaesthesia. 1st ed. Oxford: Oxford University Press; 2015. p. 157-63.
- Background: PubMed 16793778Symons JA, Myles PS. Myocardial protection with volatile anaesthetic agents during coronary artery bypass surgery: a meta-analysis. Br J Anaesth. 2006 Aug;97(2):127-36. doi: 10.1093/bja/ael149. Epub 2006 Jun 21.
- BackgroundNg, KT, Alston, P. The Levels of Anaesthetics in Heart Muscle During Heart Surgery (TLAHMHS) [Internet]. ClinicalTrial.gov.my. 2015. Available from: https://clinicaltrials.gov/ct2/show/NCT02471001
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Chew Yin Wang, FRCA (Eng) principal investigator
University of Malaya
Questions about this trial
What is this clinical trial studying?
An observational study of Myocardial Reperfusion Injury and Heart Diseases, run by University of Malaya.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 4 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: withdrawn, as of the sponsor's last update on 26 Oct 2017. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study was withdrawn before enrolling participants, so there are no results.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
The Concentration of Anaesthetics in Coronary Sinus and Radial Arterial (time frame: 1 weeks after blood samples taken). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT02866630, which also lists 8 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 26 Oct 2017.