By John Rawles BSc, MB, BS, FRCP, FRCP (Edin) (auth.)
Atrial traumatic inflammation is a standard and demanding arrythmia which impacts nearly5% of peopple over 70. This synthesis of present wisdom that's established onmuch unique paintings via the writer brings togeher for the 1st time the various parts of enhance lately and should support to make specialists from the hugely specialized fields inside cardiology conscious of the advancements withinothers.
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Additional info for Atrial Fibrillation
Turbulent activity will follow, with incoordinate contraction of the atria, lack of effective mechanical activity, and an irregular ventricular response. Similar chaotic behaviour follows the application of aconitine (Scherf 1947). A rapidly firing focus discharges at a frequency which the atria cannot follow. Induced atrial fibrillation may be modified by autonomic action or drugs that affect the refractory period of the atrial myocardium, but clearly no drug will terminate the fibrillation as long as the electrical stimulation is applied or the aconitine focus continues to fire (Moe 1968).
Induced atrial fibrillation may be modified by autonomic action or drugs that affect the refractory period of the atrial myocardium, but clearly no drug will terminate the fibrillation as long as the electrical stimulation is applied or the aconitine focus continues to fire (Moe 1968). Doubts have been expressed about the validity of using induced atrial fibrillation as a model for the real thing (Strackee et al. 1971; Dreifus and Mazgalev 1988). The Mapping of Atrial Flutter and Fibrillation: The Essential Distinction Between Them The surface electrocardiogram during atrial flutter shows a regular saw-tooth appearance of the baseline, with about 300 flutter waves per minute.
This may be achieved by direct current cardioversion which simultaneously depolarises the whole heart with an electric shock so that refractory periods of different areas of the atria are once more in step with each other. Experimentally, or in electrophysiological studies, atrial fibrillation may be induced by high-frequency stimulation of one or other atria (Haft et al. 1968; Wyndham et al. 1977; Whittington et al. 1979; Brignole et al. 1986); a stimulation frequency of 50 Hz is commonly used.