Hierarchy of ventricular pacemakers.
نویسندگان
چکیده
منابع مشابه
Hierarchy of ventricular pacemakers.
To characterize the pattern of pacemaker dominance in the ventricular specialized conduction system (VSCS), escape ventricular pacemakers were localized and quantified in vivo and in virto, in normal hearts and in hearts 24 hours after myocardial infarction. Excape pacemaker foci were localized in vivo during vagally induced atrial arrest by means of electrograms recorded from the His bundle an...
متن کاملVentricular-triggered pacemakers: clinical experience.
It is now generally agreed that the presence of symptoms is an indication for long-term pacing of patients with complete heart block, and that this treatment lowers the mortality considerably (Chardack et al., 1966; Sowton, 1967a). An appreciable proportion of paced patients has intermittent atrioventricular conduction so that if a fixed rate pacemaker is implanted there is competition between ...
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Arunaway pacemaker is a malfunctioning pacemaker that paces the heart at rapid rates. A report from Australia 30 years ago1 described a patient with runaway pacemaker that paced the ventricles at 280 bpm. The patient survived only because one of the coauthors alertly cut the pacemaker wires to disconnect the high-frequency focal source from the myocardium. In this issue of Circulation, Thomas e...
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OBJECTIVE To analyze the conventional biventricular pacing (BV) and the bifocal (BF) right ventricular (RV) pacing, and to perform a comparative analysis of these two techniques in relation to clinical, functional and echocardiographic parameters in a population without the exclusion criteria of the major studies. METHODS A prospective non-randomized analysis of 36 patients undergoing surgery...
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The study of gene regulation in cardiac myocytes requires a reliable in vitro model. However, monolayer cultures used for this purpose are typically not exposed to electrical stimulation, though this has been shown to strongly affect cardiomyocyte gene expression. Based on pacemakers for clinical use, we developed an easy-to-use portable system that allows the user to perform electro-stimulatio...
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ژورنال
عنوان ژورنال: Circulation Research
سال: 1976
ISSN: 0009-7330,1524-4571
DOI: 10.1161/01.res.39.6.883