- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04830982
Safety and Efficacy of IV Diazoxide as an Additive to Hyperkalemic Cardioplegia in Patients Undergoing Cardiac Surgery With Cardiopulmonary Bypass
September 15, 2022 updated by: Johns Hopkins University
A Randomized Placebo Controlled Single Center Phase 1 Study to Evaluate Safety and Efficacy of IV Diazoxide as an Additive to Hyperkalemic Cardioplegia in Patients Undergoing Cardiac Surgery With Cardiopulmonary Bypass
This study aims to confirm the safety and efficacy of diazoxide as an additive to hyperkalemic cardioplegia in patients undergoing cardiac surgery with cardiopulmonary bypass.
The investigators hypothesize that diazoxide combined with hyperkalemic cardioplegia provides superior myocardial protection and reduced myocardial stunning compared with standard cardioplegia alone.
The investigators will randomize 30 patients in a 2:1 fashion to treatment vs control.
Safety will be assessed by comparing mean arterial blood pressure measurements, glucose levels and incidence of adverse events between the two groups.
Efficacy will be assessed by comparing right and left ventricular function in pre-operative vs post-operative transesophageal echocardiograms, need for mechanical circulatory support, ease of separation from bypass and Vasoactive Inotrope Score (VIS) between the two groups.
The information gained could pave the way for the use of Katp (Potassium-atp) channel openers to prevent stunning, improve patient outcomes, and reduce health care costs related to myocardial stunning that requires inotropic and mechanical support following cardiac surgery.
Study Overview
Status
Withdrawn
Conditions
Intervention / Treatment
Detailed Description
This is a randomized blinded Phase I clinical trial.
Thirty patients total will be randomized on a 2:1 basis to treatment (IV Diazoxide added to cardioplegia) vs control (cardioplegia alone).
Diazoxide will be added to the first dose of cardioplegia only.
Subsequent doses of cardioplegia will not contain additives.
Study Type
Interventional
Phase
- Phase 1
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Locations
-
-
Maryland
-
Baltimore, Maryland, United States, 21287
- Johns Hopkins Hospital
-
-
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
18 years and older (Adult, Older Adult)
Accepts Healthy Volunteers
No
Genders Eligible for Study
All
Description
Inclusion Criteria:
- Age 18 years or older
- Scheduled for cardiac surgery with cardiopulmonary bypass and cardioplegic arrest
- Patient scheduled for elective cardiac surgery
Exclusion Criteria:
- Patient with Diabetes Mellitus on sulfonylurea medications
- Scheduled for left ventricular assist device (LVAD) or heart transplant
- Left ventricular ejection fraction < 30%
- Pre-operative placement or planned use of mechanical circulatory support during surgery
- Allergy to Thiazide and its derivatives
- History of gout
- Patient is pregnant or breastfeeding
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: Prevention
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Quadruple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Diazoxide
IV Diazoxide as additive to hypothermic hyperkalemic cardioplegia.
|
500 micromoles added to one liter of cardioplegia
|
Placebo Comparator: Placebo
Placebo as additive to hypothermic hyperkalemic cardioplegia.
|
Placebo added to one liter of cardioplegia
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Safety as assessed by mean change in blood pressure
Time Frame: From first dose of cardioplegia through 24 hours post operatively
|
Mean blood pressure measurements in mmHg.
|
From first dose of cardioplegia through 24 hours post operatively
|
Safety as assessed by change in blood glucose levels
Time Frame: From first dose of cardioplegia through 48 hours post operatively
|
Blood glucose levels in mg/dl.
|
From first dose of cardioplegia through 48 hours post operatively
|
Safety as assessed by incidence of adverse events
Time Frame: From first dose of cardioplegia through 7 days post operatively or discharge, whichever comes first
|
Safety will be assessed by total number of adverse events.
|
From first dose of cardioplegia through 7 days post operatively or discharge, whichever comes first
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Efficacy as assessed by change in ejection fraction
Time Frame: Day of surgery (pre and post surgery)
|
Comparison of right and left ventricular function (measured as a percentage) on pre and post operative Transesophageal echocardiograms
|
Day of surgery (pre and post surgery)
|
Efficacy as assessed by use of mechanical circulatory support
Time Frame: 48 hours post operatively
|
Incidence of mechanical circulatory support use will be used in the assessment of efficacy.
|
48 hours post operatively
|
Efficacy as assessed by change in Vasoactive Inotropic Score (VIS)
Time Frame: 0, 24, 48 and 72 hours post operatively
|
Comparison of VIS Score with values from 0 to >45, with lower scores indicating medication efficacy (0e5, >5e15, >15e30, >30e45, and >45 points).
|
0, 24, 48 and 72 hours post operatively
|
Efficacy as assessed by time to separate from Cardiopulmonary Bypass (CPB)
Time Frame: Day of surgery
|
From time of first turn down of CPB to CPB end time measured in minutes.
|
Day of surgery
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Investigators
- Principal Investigator: Jennifer Lawton, MD, Johns Hopkins University
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start (Anticipated)
September 1, 2023
Primary Completion (Anticipated)
August 30, 2025
Study Completion (Anticipated)
October 30, 2025
Study Registration Dates
First Submitted
March 31, 2021
First Submitted That Met QC Criteria
April 2, 2021
First Posted (Actual)
April 5, 2021
Study Record Updates
Last Update Posted (Actual)
September 19, 2022
Last Update Submitted That Met QC Criteria
September 15, 2022
Last Verified
September 1, 2022
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- IRB00265542
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
No
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Yes
Studies a U.S. FDA-regulated device product
No
product manufactured in and exported from the U.S.
No
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
Clinical Trials on Myocardial Stunning
-
Johns Hopkins UniversityNot yet recruitingMyocardial StunningUnited States
-
Fondazione Policlinico Universitario Agostino Gemelli...WithdrawnMyocardial Stunning
-
Tampere University HospitalTerminatedMyocardial StunningFinland
-
Tehran University of Medical SciencesRecruitingMyocardial Infarction | Myocardial Ischemia | Myocardial StunningIran, Islamic Republic of
-
University Hospital Inselspital, BerneFederal Office of Sports, SwitzerlandCompletedMyocardial Ischemia | Heart Failure | Exercise | Myocardial Stunning | Myocardial ContractionSwitzerland
-
Vastra Gotaland RegionRecruiting
-
The First Affiliated Hospital of Dalian Medical...Nanfang Hospital of Southern Medical University; Beijing Anzhen Hospital; First...CompletedHibernation, Myocardial | Complete Occlusion of Coronary Artery
-
University Hospital, GenevaWithdrawnMyocardial Stunning | Transesophageal Echocardiography | Circulation, Extracorporeal
-
University Hospital, RouenBristol-Myers Squibb; GE Healthcare; Fédération Française de Cardiologie; Société... and other collaboratorsCompletedMyocardial Infarction | Myocardial Ischemia | Coronary Arteriosclerosis | Heart Failure, Congestive | Myocardial StunningFrance, Belgium
-
University of Sao Paulo General HospitalCompletedEnd-stage Renal Disease | Myocardial StunningBrazil
Clinical Trials on IV Diazoxide
-
Johns Hopkins UniversityNot yet recruitingMyocardial StunningUnited States
-
Assistance Publique - Hôpitaux de ParisCompletedHypothalamic-pituitary Lesions | CraniopharyngiomasFrance
-
Virginia Commonwealth UniversityEunice Kennedy Shriver National Institute of Child Health and Human Development...Completed
-
Grill, Valdemar, M.D.Completed
-
University of DundeeJuvenile Diabetes Research FoundationCompleted
-
Essentialis, Inc.WithdrawnHypertriglyceridemia
-
Albert Einstein College of MedicineNational Institute of Diabetes and Digestive and Kidney Diseases (NIDDK); National...SuspendedDiabetes Mellitus, Type 2 | Glucose, High Blood | Glucose Metabolism Disorders (Including Diabetes Mellitus)United States
-
Albert Einstein College of MedicineNational Institute of Diabetes and Digestive and Kidney Diseases (NIDDK); National...Active, not recruitingGlucose Metabolism Disorders | Type 2 Diabetes | Glucose, High BloodUnited States
-
Columbia UniversityUniversity of California, BerkeleyRecruitingInsulin Resistance | Prediabetic State | Hyperinsulinemia | Non-Alcoholic Fatty Liver DiseaseUnited States