Zusammenfassung
Eine kritische Durchsicht der wissenschaftlichen Literatur zeigt diskrepante und in bedeutsamem Umfang methodisch unzureichende Befunde zur Wirkung von Mg2+ bei akuten infarktbedingten Herzrhythmusstörungen und bei infarktbedingten Todesfällen. Nach derzeitiger Datenlage kann weder eine antiarrhythmische Wirkung von Magnesium noch eine prophylaktische Wirkung im Sinne einer Mortalitätsverminderung bei akutem Myokardinfarkt als zweifelsfrei gesichert gelten. Im Gegensatz hierzu sollte bei Patienten mit akutem Myokardinfarkt und dokumentierter Hypokaliämie (Kalium <3,5 mmol/l) eine Kaliumsubstitution erfolgen, um der Entwicklung ventrikulärer Arrhythmien entgegenzuwirken. Der therapeutische Einsatz von Magnesium bei akutem Myokardinfarkt kommt dagegen nur im Rahmen klinisch kontrollierter Studien in Betracht.
Summary
A critical analysis of literature concerning the effects of intravenous magnesium on arrhythmias and mortality in acute myocardial infarction shows discrepant results and often inappropiate methods. So far neither an antiarrhythmic efficacy nor prophylactic effects with respect to mortality could be demonstrated. In contrast, potassium substitution should be performed in the setting of acute myocardial infarction with documented hypokalemia (K+ <3.5 mmol/l) because of increased risk of ventricular arrhythmias. According to the documented results of the trials reviewed in this article no recommendations for the routine use of magnesium in myocardial infarction can be given.
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Kunert, M., Scheuble, L., Stolzenburg, H. et al. Stellenwert von K+ und Mg2+ bei der Behandlung des akuten Myokardinfarktes. Herz 22 (Suppl 1), 63–72 (1997). https://doi.org/10.1007/BF03042657
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DOI: https://doi.org/10.1007/BF03042657