Efficacy of Precordial Percussion Pacing Assessed in a Cardiac Standstill Microminipig Model.
Circ J
; 81(8): 1137-1143, 2017 Jul 25.
Article
em En
| MEDLINE
| ID: mdl-28381704
ABSTRACT
BACKGROUND:
Potential cardiovascular benefits of precordial percussion pacing (PPP) during cardiac standstill are unknown.MethodsâandâResults:
A cardiac standstill model in amicrominipigwas created by inducing complete atrioventricular block with a catheter ablation technique (n=7). Next, the efficacy of cardiopulmonary resuscitation by standard chest compressions (S-CPR), PPP and ventricular electrical pacing in this model were analyzed in series (n=4). To assess the mechanism of PPP, a non-selective, stretch-activated channel blocker, amiloride, was administered during PPP (n=3). Peak systolic and diastolic arterial pressures during S-CPR, PPP and ventricular electrical pacing were statistically similar. However, the duration of developed arterial pressure with PPP was comparable to that with ventricular electrical pacing, and significantly greater than that with S-CPR. Amiloride decreased the induction rate of ventricular electrical activity by PPP in a dose-related manner. Each animal survived without any neurological deficit at 24, 48 h and 1 week, even with up to 2 h of continuous PPP.CONCLUSIONS:
In amicrominipigmodel of cardiac standstill, PPP can become a novel means to significantly improve physiological outcomes after cardiac standstill or symptomatic bradyarrhythmias in the absence of cardiac pacing. Activation of the non-selective stretch-activated channels may mediate some of the mechanophysiological effects of PPP. Further study of PPP by itself and together with S-CPR is warranted using cardiac arrest models of atrioventricular block and asystole.Palavras-chave
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Nó Atrioventricular
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Estimulação Cardíaca Artificial
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Reanimação Cardiopulmonar
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Ablação por Cateter
Limite:
Animals
Idioma:
En
Revista:
Circ J
Assunto da revista:
ANGIOLOGIA
/
CARDIOLOGIA
Ano de publicação:
2017
Tipo de documento:
Article