Abstract
The three main causes of cardiac arrhythmias are: enhanced automaticity, reentry, or triggered activity. In the critical care setting patients often show electrical instability of the heart, either due to intrinsic cardiac diseases or to electrolyte and acid-base imbalance. In addition, they are submitted to aggressive drug therapies (inotropes, amines, antiarrhythmics), which may negatively influence myocardial excitability, possibly provoking a proarrhythmic effect [1–3]. In order to improve the therapeutic strategies in such patients, it could perhaps be useful to recall first of all some basic principles about the electrophysiologic properties of the heart, and then to link them to an appropriate choice of antiarrhythmic. Moreover, the possibility should always be considered of some detrimental effects in the presence of pharmacological interactions and myocardial depression.
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Schiraldi, F., Ferraro, P., Paladino, F. (2001). Physiologic Imbalance as a Cause of Cardiac Arrhythmias. In: Atlee, J.L., Vincent, JL. (eds) Critical Care Cardiology in the Perioperative Period. Topics in Anaesthesia and Critical Care. Springer, Milano. https://doi.org/10.1007/978-88-470-2955-2_8
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DOI: https://doi.org/10.1007/978-88-470-2955-2_8
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