Michael Oeff

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AIMS The aim of this study was to describe the characteristics of patients with atrial fibrillation (AF) enrolled in the Central Registry of the German Competence NETwork on Atrial Fibrillation (AFNET) and to assess current medical practice in patients treated at various levels of medical care in Germany. METHODS AND RESULTS From February 2004 to March(More)
BACKGROUND Telemonitoring can improve the medical care, quality of life, and prognosis of chronically ill patients. This review article summarizes the current status of health services research on telemonitoring, focusing on patients with chronic congestive heart failure. METHOD The Medline database was selectively searched for articles appearing from(More)
The German Competence Network on Atrial Fibrillation (AFNET) is an interdisciplinary national research network funded by the Federal Ministry of Education and Research (BMBF) since 2003. The AFNET aims at improving treatment of atrial fibrillation (AF), the most frequent sustained arrhythmia of the heart. The AFNET has established a nationwide patient(More)
At least 30 million people worldwide carry a diagnosis of atrial fibrillation (AF), and many more suffer from undiagnosed, subclinical, or 'silent' AF. Atrial fibrillation-related cardiovascular mortality and morbidity, including cardiovascular deaths, heart failure, stroke, and hospitalizations, remain unacceptably high, even when evidence-based therapies(More)
The variability of electric and magnetic signals from the heart during the depolarization phase is investigated. A signal processing method is developed, which provides estimates for the beat-to-beat variability of the QRS-complex. The method is based on the decomposition of the depolarization signal into bandpass signals by means of the Morlet wavelet(More)
The spatial distribution of high-frequency components in magnetic signals during the QRS complex of the human heartbeat was investigated. Cardiomagnetic signals were recorded simultaneously using 49 first-order magnetogradiometer channels of a multi-SQUID system with a low noise power density. The QRS fragmentation score S, as a measure of the fragmentation(More)
BACKGROUND Current recommendations for anticoagulation management during cardioversion are largely based on historical data and expert consensus. METHODS AND RESULTS To characterize current practice of anticoagulation during and after elective cardioversion for AF and the risk of stroke and bleeding events, all patients enrolled into the Flec-SL trial(More)
Der deutliche Zuwachs an Patienten mit chronischen Erkrankungen bei gleichzeitig verbesserungswürdiger Koordination der unterschiedlichen Versorgungsebenen (mit diskontinuierlichen Prozessen und Redundanzen) resultiert in steigenden Belastungen für das deutsche Gesundheitssystem. Aktuelle technische Entwicklungen bieten bereits eine realistische Basis,(More)
AIMS In patients with persistent atrial fibrillation (AF), the efficacy and safety of two anti-arrhythmic drugs in preventing the recurrence of AF after successful direct current (DC) cardioversion was prospectively assessed in a multi-centre double-blind, placebo-controlled, randomised trial using daily trans-telephonic monitoring. METHODS AND RESULTS(More)
INTRODUCTION Flecainide is a class Ic antiarrhythmic agent available in Europe since 1982. The clinical development program of flecainide provided good data on its antiarrhythmic effect for the prevention of ventricular and supraventricular arrhythmias. The Cardiac Arrhythmia Suppression Trial (CAST), conducted to test whether the arrhythmia suppression(More)