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Monophasic action potentials: concepts to practical applications
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences. (Cardiology-arrhythmia)
1994 (English)In: Cardiovascular Electrophysiology, ISSN 1045-3873, E-ISSN 1540-8167, Vol. 5, no 3, 287-308 p.Article in journal (Refereed) Published
Abstract [en]

Monophasic Action Potentials. Monophaisc action potential (MAP) recordings reproduce the repolarization time course of intrucellular action potentials with high accuracy and provide precise information on the local activation time. With the advantage of in vivo application and the development of the safer and simpler contact catheter technique, MAP recording has become the method of choice for evaluating myocardial repolarization changes. This review aims to provide information on practical application of MAP recording in the clinical setting. MAPs can easily be recorded from the endocardium with the contact catheter technique in the electrophysiology laboratory and from the epicardium with electrode probes during open heart surgery. The technical aspects are described in detail. The rate dependence of myocardial excitability and repolarization and the effect of antiarrhythmic drugs on MAP duration and effective refractory period are thoroughly reviewed. The use of MAPs in detecting myocardial ischemia, in studying early afterdepolarization and triggered arrhythmias, in measuring dispersion of repolarization, in identifying intracardiac conduction and the development of the T wave, and in verifying the arrhythmogenic effect of mechanoelectric feedback are presented. Computerized automatic analysis of MAPs and the limitations of the MAP technique are also discussed.

Place, publisher, year, edition, pages
1994. Vol. 5, no 3, 287-308 p.
Keyword [en]
Action Potentials/drug effects/*physiology, Anti-Arrhythmia Agents/pharmacology/therapeutic use, Arrhythmia/drug therapy/physiopathology, Heart Diseases/drug therapy/*physiopathology, Humans, Research Support; Non-U.S. Gov't
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:uu:diva-69287DOI: 10.1111/j.1540-8167.1994.tb01165.xPubMedID: 8193743OAI: oai:DiVA.org:uu-69287DiVA: diva2:97198
Available from: 2005-03-30 Created: 2005-03-30 Last updated: 2017-11-21Bibliographically approved

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Blomström-Lundqvist, Carina

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