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Safety and Feasibility of Hyperkalemic Cardioplegia With Diazoxide in Cardiac Surgery (CPG-DZX) Trial

NCT06308107 · Status: COMPLETED · Phase: PHASE1 · Type: INTERVENTIONAL · Enrollment: 30

Last updated 2025-07-14

No results posted yet for this study

Summary

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. Thirty patients will receive treatment. 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.

Conditions

  • Myocardial Stunning

Interventions

DRUG

IV Diazoxide

500 micromoles added to one liter of cardioplegia

Sponsors & Collaborators

Principal Investigators

  • Jennifer Lawton, MD · Johns Hopkins University

Study Design

Allocation
NA
Purpose
PREVENTION
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2024-07-08
Primary Completion
2025-05-09
Completion
2025-05-09
FDA Drug
Yes

Countries

  • United States

Study Locations

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Entities

Companies

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT06308107 on ClinicalTrials.gov