0000000000204932

AUTHOR

Oliver Przibille

Erste Erfahrungen mit einem neuen Therapiekonzept für die Schrittmacherbehandlung von Säuglingen und Kleinkindern

Fragestellung: Fur Sauglinge und Fruhgeborene ist eine geringe Grose des Schrittmacheraggregats besonders wichtig. Unsere bisherigen Erfahrungen mit dem kleinsten, z.Z. verfugbaren Pulsgenerator bei Kindern wurden analysiert und hier vorgestellt. Methode: Bei 2 Fruhgeborenen mit symptomatischem kompletten AV-Block und einem 8jahrigen Patienten mit kongenitalem AV-Block bei komplexen Vitium und Palliation mittels totaler kavopulmonaler Anastomose wurde der kleinste z.Z. verfugbare Pulsgenerator erstmals mit bipolaren, epikardialen steroideluierenden Elektroden implantiert. Dieser Schrittmacher arbeitet durch den Autocapture-Algorithmus besonders energiesparend, so das trotz geringerer Batter…

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Paroxysmal atrial fibrillation and high degree AV block: use of single-lead VDDR pacing with mode switching.

Dual chamber rate responsive pacing incorporating a mode switching option is increasingly used in patients with chronic paroxysmal atrial fibrillation and high degree AV block. Single-lead VDDR pacemakers have rarely used for this indication. The purpose of this study was to determine their reliability of atrial sensing during atrial fibrillation, the percentage of atrial synchronous ventricular pacing, and the behavior of the sinus rate outside the phases of atrial fibrillation. We studied ten patients with a single-lead VDDR pacemaker implanted for this indication. Follow-up visits were performed at predischarge and after 1, 3, 6, 12, 18, and 24 months. During the mean follow-up period of…

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Is atrial sensing of ventricular far-field signals important in single-lead VDD pacing?

UNLABELLED In single-lead VDD pacing the atrial sensitivity frequently is programmed to sensitive values. Atrial sensing of ventricular far-field signals should be reduced by differential atrial sensing. The aim of the study was to evaluate the effectiveness of this approach. METHODS The study included 10 patients with a single-lead VDD pacemaker (Thera 8948, Lead 5032). The atrial sensitivity was set to its most sensitive value of 0.18 mV and the telemetered intraatrial EGM was continuously recorded. After atrial tracked ventricular pacing, VVI pacing was performed with pacing rates from 100 to 160 beats/min in steps of 10 beats/min and up to 165 beats/min. The peak-to-peak amplitudes of P…

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How Can We Identify the Best Implantation Site for an ECG Event Recorder?

ZELLERHOFF, C., et al.: How Can We Identify the Best Implantation Site for an ECG Event Recorder? The aim of this study was to show how to find the preferable implantation site for an ECG event recorder (ECG-ER). We compared the quality of bipolar ECG recordings (4-cm electrode distance, vertical position) in 65 patients at the following sites: left and right subclavicular, left and right anterior axillary line (4th-5th interspace), left and right of the sternum (4th-5th interspace), heart apex, and subxyphoidal. The results were compared to the standard ECG lead II. In 30 patients, an additional comparison between vertical and horizontal ECG registrations was done using the same sites. ECG…

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VDD(R)-Stimulation mit Mode-Switch bei paroxysmalem Vorhofflimmern und AV-Block: Verlauf über 2 Jahre

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Device-Therapie nach akutem Koronarsyndrom

AV-Blocke sind beim akuten Koronarsyndroms selten. Nur wenige Patienten benotigen eine Schrittmacherimplantation. Besonders beim Hinterwandinfarkt ist die Prognose gut. Die Haufigkeit anhaltender AV-Blockierungen hat durch die Akut-PTCA abgenommen. Ventrikulare Tachyarrhythmien sind in der Akutphase des Infarktes haufig. Treten sie als anhaltende Kammertachykardien oder Kammerflimmern > 48 Stunden nach Infarkt auf, konnen sie eine Indikation zur sekundarprophylaktischen ICD-Implantation darstellen. Primarprophylaktisch sollte ein Defibrillator implantiert werden, wenn die LV-EF auch > 40 Tage nach Infarkt ≤ 35 % betragt. Ist fruh nach Infarkt eine Aggregatimplantation erforderlich, sollte b…

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Schrittmachertherapie bei Frühgeborenen mit AV-Block: Erstmaliger Einsatz von „Autocapture” mit epikardialer Elektrode

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Pacemaker therapy in premature children with high degree AV block.

The smallest pacemaker pulse generator and a steroid-eluting bipolar epicardial lead were implanted in two premature children with symptomatic AV block. Stable capture threshold and high amplitude evoked response electrogram resulted in normal function of the pacemaker Autocapture algorithm, which adjusts output 0.3 V above the measured capture threshold. Autocapture had previously been used only with endocardial leads. Longer-term observation is required.

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