Lidocaine and Pinacidil Added to Blood versus Crystalloid Cardioplegic Solutions: Study in Isolated Hearts

Autor: Helison Pereira do Carmo, Karla Reichert, Daniela Diógenes de Carvalho, Lindemberg da Mota Silveira-Filho, Karlos Vilarinho, Pedro Oliveira, Orlando Petrucci
Jazyk: angličtina
Předmět:
Zdroj: Brazilian Journal of Cardiovascular Surgery, Vol 33, Iss 3, Pp 211-216
Druh dokumentu: article
ISSN: 1678-9741
DOI: 10.21470/1678-9741-2017-0244
Popis: Abstract Objective: The present study aimed the functional recovery evaluation after long term of cardiac arrest induced by Custodiol (crystalloid-based) versus del Nido (blood-based) solutions, both added lidocaine and pinacidil as cardioplegic agents. Experiments were performed in isolated rat heart perfusion models. Methods: Male rat heart perfusions, according to Langendorff technique, were induced to cause 3 hours of cardiac arrest with a single dose. The hearts were assigned to one of the following three groups: (I) control; (II) Custodiol-LP; and (III) del Nido-LP. They were evaluated after ischemia throughout 90 minutes of reperfusion. Left ventricular contractility function was reported as percentage of recovery, expressed by developed pressure, maximum dP/dt, minimum dP/dt, and rate pressure product variables. In addition, coronary resistance and myocardial injury marker by alpha-fodrin degradation were also evaluated. Results: At 90 minutes of reperfusion, both solutions had superior left ventricular contractile recovery function than the control group. Del Nido-LP was superior to Custodiol-LP in maximum dP/dt (46%±8 vs. 67%±7, P
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