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Effect of the cardioselective ATP-sensitive potassium channel inhibitor HMR 1883 in a porcine model of cardiopulmonary resuscitation.
- Source :
-
Resuscitation [Resuscitation] 2002 Jun; Vol. 53 (3), pp. 299-306. - Publication Year :
- 2002
-
Abstract
- Objective: HMR 1883 (the free acid form of HMR 1098) selectively inactivates myocardial ATP sensitive potassium channels, which may be a potential important therapeutic approach to prevent life-threatening arrhythmias. This study was designed to assess the effects of HMR 1883 combined with adrenaline on haemodynamic variables, blood gases, and cardiac arrhythmias in a porcine cardiac arrest model.<br />Methods: After 8 min of untreated cardiac arrest, followed by 1 min of cardiopulmonary resuscitation (CPR), 12 pigs weighing 30-40 kg were assigned randomly to receive either 45 microg/kg adrenaline alone (n=6), or 45 microg/kg adrenaline combined with 3 mg/kg HMR 1883 (n=6), followed by up to three defibrillation attempts 2 min later. Five minutes after return of spontaneous circulation, cardiac arrest was induced for 1 min, with the CPR protocol following as described above. All animals subsequently underwent four cardiac arrest intervals of 1, 2, 3, and 4 min duration which were separated by four episodes of 5 min of return of spontaneous circulation.<br />Results: Haemodynamic variables, cardiac arrhythmias in the acute resuscitation phase between termination of chest compressions and return of spontaneous circulation, and after return of spontaneous circulation in both groups were comparable throughout the experiment. Survival rates throughout the experiment were comparable between groups. Arterial blood gases, electrolyte, glucose, and lactate levels in both groups during the experiment indicated comparable severe metabolic acidosis, with increasing levels after each episode of simulated refibrillation, and subsequent return of spontaneous circulation.<br />Conclusion: Combining HMR 1883 with adrenaline during CPR resulted in comparable haemodynamic variables, return of spontaneous circulation rates, cardiac arrhythmias, lactate and glucose levels compared with adrenaline alone. This indicates that injection of HMR 1883 was safe under these conditions.
- Subjects :
- Animals
Blood Gas Analysis
Drug Therapy, Combination
Epinephrine therapeutic use
Heart Arrest physiopathology
Models, Animal
Sulfonamides administration & dosage
Swine
Thiourea administration & dosage
Cardiopulmonary Resuscitation methods
Heart Arrest complications
Hemodynamics physiology
Potassium Channel Blockers
Sulfonamides therapeutic use
Thiourea analogs & derivatives
Thiourea therapeutic use
Ventricular Fibrillation prevention & control
Subjects
Details
- Language :
- English
- ISSN :
- 0300-9572
- Volume :
- 53
- Issue :
- 3
- Database :
- MEDLINE
- Journal :
- Resuscitation
- Publication Type :
- Academic Journal
- Accession number :
- 12062846
- Full Text :
- https://doi.org/10.1016/s0300-9572(02)00038-2