Ischaemic Heart DiseasesNCT03766529
Loop Isolation-based Uploading Pre-conditioning
An observational study of Ischaemic Heart Diseases, run by Nanjing Medical University at 1 site in China.
Trial summary
Myocardial protection is of crucial importance for surgical coronary revascularization in patients with ischaemic heart diseases. The investigators proposed loop isolation-based uploading preconditioning to protect heart from ischemic-reperfusion damage (LiuPhD) as a novel cardioprotective strategy, and applied to… Read more about this study
- Who is it for?
- Ages 50 to 90 years
- Conditions the study is for
- Ischaemic Heart Diseases
- What is being tested?
- loop isolation-based uploading preconditioning (LiuPhD)
- Type of treatment
- Surgery or procedure
- How many people
- 60 participants
- Where
- 1 siteChina
- Study dates
- Jan 2016to Dec 2018
- 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 50 to 90 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: The LiuPhD (Loop Isolation-based Uploading Preconditioning to Protect Heart from ischemic-reperfusion Damage) study was a prospective, open-label, single-arm, first-in-man trial on the use of LiuPhD strategy for myocardial protection in patients who underwent surgical coronary revascularization.
Who may be able to join
- Patients scheduled for a first, elective, isolated, open thoracotomy, on-pump CABG were eligible for enrollment if they if they had coronary angiography-confirmed unprotected left main disease, 3-vessel disease with or without proximal LAD artery disease, or 2-vessel disease with proximal LAD artery disease.
- Inclusion criteria were evidence of preserved left ventricular function (LVEF≥35%) and normal or mild pulmonary hypertension (sPAP<50mmHg).
Who cannot join
- Exclusion criteria were secondary CABG, emergency CABG, conversion operations form off-pump CABG or minimally invasive CABG surgery, or any additional cardiac lesions necessitating concomitant surgery, as well as being considered too high risk for surgical revascularization.
Trial locations and contacts
1 site in 1 country.
China1 site, 1 recruiting
- Recruiting
TEDA International Cardiovascular Hospital
Tianjin, Tianjin Municipality, 300457
Hong Liu, MD, 188012181613, dr.hongliu@foxmail.com
About this study
Official title: Loop Isolation-based Uploading Pre-conditioning to Protect Heart From Ischemic-Reperfusion Damage in Coronary Artery Bypass Surgery
Myocardial protection is of crucial importance for surgical coronary revascularization in patients with ischaemic heart diseases. The investigators proposed loop isolation-based uploading preconditioning to protect heart from ischemic-reperfusion damage (LiuPhD) as a novel cardioprotective strategy, and applied to patients who underwent on-pump coronary artery bypass grafting (CABG).
Read the detailed description
Myocardial protection is of crucial importance for surgical coronary revascularization in patients with ischaemic heart diseases. Considerable effort has been made to optimize cardioprotective strategy for improving cardiac performances after global myocardial ischemia. Of various strategies, terminal warm blood cardioplegia (TWBC) delivery has been proven to be effective in reducing risk of ischemic attack at the time of myocardial reperfusion. Based on TWBC strategy and Frank-Starling law of heart, the investigators proposed loop isolation-based uploading preconditioning to protect heart from ischemic-reperfusion damage (LiuPhD) as a novel myocardial protective strategy, which procedurally renders coronary loop via brief warm blood delivery independent of extracorporeal loop following TWBC delivery just before declamping. The investigators hypothesize that LiuPhD strategy allows myocardial cells complete depolarization and drives heart into zero-loading heat cycles, contributing to enhancing myocardial physiologic reserve and improving cardiac initiative capacity responding to upcoming loading increases after onset of clamp release. The aim of the present study was to determine whether LiuPhD strategy during on-pump coronary artery bypass grafting (CABG) can attenuate reperfusion injury after global myocardial ischemia.
- Conditions
- Ischaemic Heart Diseases
- Being tested
- loop isolation-based uploading preconditioning (LiuPhD)
- Medical subject headings
- Coronary Artery Disease
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
loop isolation-based uploading preconditioning (LiuPhD)Procedure or surgery
declamping was not done until heart could resume normal mechanical activities and sustain well for three minutes in terms of heart rate, rhythm, and myocardial contractility via continuous antegrade warm blood delivery closely following TWBC reperfusion.
What is being measured
The primary outcome is the main question the study is designed to answer.
Concentration of postoperative maximum cardiac troponin T
postoperative maximum concentration serum cardiac troponin T (cTnT) as markers of myocardial injury.
Measured: up to 30 days
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted6 Dec 2018
- Study startJan 2016
- Primary completionDec 2018 (estimated)
- Study completionDec 2018 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Ischaemic Heart DiseasesStudies of the same condition, open and under way.
- More trials run by Nanjing Medical UniversityThe sponsor's other registered studies.
- 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
- 60 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Nanjing Medical University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Hong Liu, Nanjing Medical University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03766529
- Sponsor's protocol ID
- LiuPhD
- Status last verified
- Dec 2018
- First submitted
- 3 Dec 2018
- Last updated
- 7 Dec 2018
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Undecided
Study at a glance
From the registry record, last updated by the sponsor on 7 Dec 2018. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Loop Isolation-based Uploading Pre-conditioning to Protect Heart From Ischemic-Reperfusion Damage in Coronary Artery Bypass Surgery
- ClinicalTrials.gov ID
- NCT03766529
- Acronym / sponsor ID
- LiuPhD
- Conditions
- Ischaemic Heart Diseases
- Study type
- Observational
- Recruitment status
- Unknown status
- Enrolment
- 60 participants (estimated)
- Lead sponsor
- Nanjing Medical UniversityUniversity, hospital or other
- Study start
- Jan 2016 (actual)
- Primary completion
- Dec 2018 (estimated)
- Study completion
- Dec 2018 (estimated)
- First posted
- 6 Dec 2018 (actual)
- 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.
Myocardial protection is of crucial importance for surgical coronary revascularization in patients with ischaemic heart diseases. The investigators proposed loop isolation-based uploading preconditioning to protect heart from ischemic-reperfusion damage (LiuPhD) as a novel cardioprotective strategy, and applied to patients who underwent on-pump coronary artery bypass grafting (CABG).
Detailed description
Myocardial protection is of crucial importance for surgical coronary revascularization in patients with ischaemic heart diseases. Considerable effort has been made to optimize cardioprotective strategy for improving cardiac performances after global myocardial ischemia. Of various strategies, terminal warm blood cardioplegia (TWBC) delivery has been proven to be effective in reducing risk of ischemic attack at the time of myocardial reperfusion. Based on TWBC strategy and Frank-Starling law of heart, the investigators proposed loop isolation-based uploading preconditioning to protect heart from ischemic-reperfusion damage (LiuPhD) as a novel myocardial protective strategy, which procedurally renders coronary loop via brief warm blood delivery independent of extracorporeal loop following TWBC delivery just before declamping. The investigators hypothesize that LiuPhD strategy allows myocardial cells complete depolarization and drives heart into zero-loading heat cycles, contributing to enhancing myocardial physiologic reserve and improving cardiac initiative capacity responding to upcoming loading increases after onset of clamp release. The aim of the present study was to determine whether LiuPhD strategy during on-pump coronary artery bypass grafting (CABG) can attenuate reperfusion injury after global myocardial ischemia.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
Who may qualify
- Ages
- 50 to 90 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- The LiuPhD (Loop Isolation-based Uploading Preconditioning to Protect Heart from ischemic-reperfusion Damage) study was a prospective, open-label, single-arm, first-in-man trial on the use of LiuPhD strategy for myocardial protection in patients who underwent surgical coronary revascularization.
Key inclusion criteria (2 listed)
- Patients scheduled for a first, elective, isolated, open thoracotomy, on-pump CABG were eligible for enrollment if they if they had coronary angiography-confirmed unprotected left main disease, 3-vessel disease with or without proximal LAD artery disease, or 2-vessel disease with proximal LAD artery disease.
- Inclusion criteria were evidence of preserved left ventricular function (LVEF≥35%) and normal or mild pulmonary hypertension (sPAP<50mmHg).
Key exclusion criteria (1 listed)
- Exclusion criteria were secondary CABG, emergency CABG, conversion operations form off-pump CABG or minimally invasive CABG surgery, or any additional cardiac lesions necessitating concomitant surgery, as well as being considered too high risk for surgical revascularization.
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 |
|---|---|---|
| loop isolation-based uploading preconditioning (LiuPhD)declamping was not done until heart could resume normal mechanical activities and sustain well for three minutes in terms of heart rate, rhythm, and myocardial contractility via continuous antegrade warm blood delivery closely following TWBC reperfusion. | Procedure or surgery | – |
Primary outcome
Concentration of postoperative maximum cardiac troponin T
Time frame: up to 30 days
postoperative maximum concentration serum cardiac troponin T (cTnT) as markers of myocardial injury.
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 7 Dec 2018.
- Individual participant dataSharing planned: Undecided
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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.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Ischaemic Heart Diseases, run by Nanjing Medical University at 1 site in China.
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 2 inclusion and 1 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: status not confirmed, as of the sponsor's last update on 7 Dec 2018. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.
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?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
Contact Hong Liu, MD (8618801281613, dr.hongliu@foxmail.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Concentration of postoperative maximum cardiac troponin T (time frame: up to 30 days). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
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 7 Dec 2018.