Zusammenfassung
Das akute Koronarsyndrom ist in ca.10–12% durch das Auftreten von Vorhofflimmern kompliziert, was mit einer erhöhten intrahospitalen und Langzeitmortalität einhergeht. Mortalitätsbedingende Faktoren sind Blutungskomplikationen, ein erhöhtes Risiko für Schlaganfall, Herzinsuffizienz und kardiogener Schock. Zugangsbedingte arterielle Blutungskomplikationen bei primärer perkutaner transluminarer koronarer Angioplastie (PTCA) können durch einen transradialen Zugang deutlich vermindert werden. ASS und Clopidogrel verhindern die Stentthrombose, reduzieren aber das Schlaganfallrisiko im Langzeitverlauf nicht ausreichend. Für diese Patienten wird eine Triple-Therapie, bestehend aus ASS, Clopidogrel und Marcumar (INR 2,0–2,5), je nach Schlaganfallrisiko (CHA2DS2-VASc-Score), Blutungsrisiko (HAS-BLED), implantiertem Stent (BMS vs. DES), empfohlen. Die Triple-Therapie ist mit einem erhöhten Blutungsrisiko verbunden. β-Blocker, ACE-Hemmer, die elektrische Kardioversion oder Amiodaron sind effektive Maßnahmen, um den Sinusrhythmus frühzeitig wiederherzustellen und zu stabilisieren.
Abstract
Atrial fibrillation (AF) is a common arrhythmia following acute myocardial infarction and the overall percentage observed in previous studies ranges between 10 and 12%. Acute coronary syndrome (ACS) and AF are associated with a higher in-hospital and long-term mortality. Predisposing factors are higher bleeding complications, higher incidence of stroke, heart failure and cardiogenic shock. Access site complications can be significantly reduced using the transradial approach for PCI which improves the clinical outcome of these patients. Stroke is an important complication in patients hospitalized with ACS. The incidence of acute stroke in patients with ACS and AF varies between 0.5 and 1.3%. The increasing use of drug-eluting stents (DES) to minimize in-stent restenosis necessitates long-term dual antiplatelet therapy with aspirin plus a thienopyridine (at present most frequently clopidogrel) to reduce the risk of early and late stent thrombosis. Combined aspirin-clopidogrel therapy, however, is less effective in preventing stroke compared with oral anticoagulation (OAC) alone—and OAC alone is insufficient to prevent stent thrombosis. In patients with ACS and AF a triple therapy consisting of aspirin, clopidogrel and OAC (INR 2.0–2.5) is recommended according to the risk stratification (CHA2DS2-VASc score), the bleeding risk (HAS-BLED score), and the implanted stent (DES vs BMS). Triple therapy is associated with a higher bleeding risk and should be administered as briefly as necessary. Using beta-blockers, ACE inhibitors, direct current cardioversion or intravenous administration of amiodarone may reduce the incidence of AF and restore sinus rhythm which can reduce the duration of triple therapy.
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Wolf-Pütz, A., Wein, M. & Klein, R. Management der interventionellen Therapie von Patienten mit akutem Koronarsyndrom und Vorhofflimmern. Kardiologe 5, 291–306 (2011). https://doi.org/10.1007/s12181-011-0358-7
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DOI: https://doi.org/10.1007/s12181-011-0358-7