Politics of pacemaker dominance
نویسندگان
چکیده
منابع مشابه
Pacemaker Twiddler's Syndrome
A 76-yr-old man with unipolar ventricular pacemaker, previously implanted in the right ventricular apex, presented with syncopal attack and twitching of the right pectoralis muscle. He finally was diagnosed as having Twiddler's syndrome. The patient had a pulse rate of 36/min and cannon waves in the neck veins. Chest radiography showed a dislodged pacing lead completely wrapped around the pulse...
متن کاملCyclic variation of intracellular calcium: a critical factor for cardiac pacemaker cell dominance.
While a diversity of cell types and distribution within the sinoatrial node and cell-cell interactions add complexity to a complete elucidation of the heart's pacemaker function, it has become clear that cyclic variation of submembrane [Ca2+] and activation of the Na+-Ca2+ exchanger during diastolic depolarization (DD) act in concert with ion channels to confer on sinoatrial node cells (SANCs) ...
متن کاملCultures of Dominance: Institutional and Cultural Influences on Parliamentary Politics in Melanesia
This paper explores the institutional and cultural aspects of parliamentary politics in the Melanesian states Papua New Guinea, Solomon Islands, Vanuatu and Fiji, and in so doing seeks to provide a baseline of information about Melanesian parliamentary politics.1 The paper argues that executive dominance has become entrenched and normalised because of the interplay between parliamentary institu...
متن کاملPacemaker dependency after pacemaker implantation.
BACKGROUND Pacemaker dependency (PD) can be defined as the risk of serious injury or death from sudden pacemaker failure, an event more dangerous than progressive rate decrease. The aim of this study was to evaluate the incidence of PD during long-term follow-up after pacing system implantation. METHODS AND RESULTS The study included 3638 patients (mean age 65.3 +/- 10.2 years). Indications f...
متن کاملShifts in pacemaker dominance within the sinoatrial region of cat and rabbit hearts resulting from increase of extracellular potassium.
Simultaneous recording of action potentials from cells in different parts of sinoatrial preparations from cat and rabbit hearts confirms the suggestion by Meek and Eyster that the dominant pacemaker site shifts during treatment with high [K] . The direction of die shift can be eidier upward or downward depending upon the location of the original dominant pacemaker site. In the majority of cases...
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ژورنال
عنوان ژورنال: Biophysical Journal
سال: 1991
ISSN: 0006-3495
DOI: 10.1016/s0006-3495(91)82163-4