Trombolisi e aritmie.

Translated title of the contribution: Thrombolysis & arrhythmias

B. Carù, G. Merati, S. Allibardi, M. Samaja

Research output: Contribution to journalArticle

Abstract

In this study, we assessed one particular aspect of the arrhythmogenic phenomena that occur during reperfusion secondary to thrombolysis, that is the therein involved metabolic mechanisms. The employed experimental model (isolated Langendorff-perfused rat heart) allowed us to distinguish which factor involved during ischemia, low coronary flow or low oxygen tension, is primarily involved during arrhythmogenesis. This was made possible by comparing two settings characterized by the same oxygen supply, but with different coronary flows and PO2 values, i.e., ischemia and hypoxemia. As expected, the contractile dysfunction was higher during reoxygenation at the end of hypoxemia than during reperfusion at the end of ischemia (p <0.05). However, the incidence of arrhythmias was similar in both cases. Therefore, whereas the contractile dysfunction appears to be more sensitive to coronary flow, the incidence of arrhythmias appears to be more sensitive to the total oxygen supply to the heart. This implies that the mechanisms underlying the development of contractile dysfunction and arrhythmogenesis follow different paths.

Translated title of the contributionThrombolysis & arrhythmias
Original languageItalian
Pages (from-to)921-926
Number of pages6
JournalCardiologia
Volume40
Issue number12
Publication statusPublished - Dec 1995

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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    Carù, B., Merati, G., Allibardi, S., & Samaja, M. (1995). Trombolisi e aritmie. Cardiologia, 40(12), 921-926.