By David L. Hayes, Samuel J. Asirvatham, Paul A. Friedman
Together with thirteen chapters, this e-book is uniformly written to supply brilliant, matter-of-fact equipment for knowing and taking good care of sufferers with everlasting pacemakers, ICDs and CRT systems.Now more suitable and up to date, together with a brand new bankruptcy on programming and optimization of CRT units, this moment variation offers a large number of info in an simply digestible shape. Cardiac Pacing and Defibrillation bargains brilliant, matter-of-fact tools for figuring out and taking care of sufferers, making daily scientific encounters more straightforward and extra productive.Readers will delight in the information and event shared through the authors of this e-book.
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Extra info for Cardiac Pacing and Defibrillation: A Clinical Approach
Termination of ventricular fibrillation in dogs by depolarizing a critical amount of myocardium. Am J Cardiol 1975; 36:37–44. 62 Chen PS, Shibata N, Dixon EG et al. Activation during ventricular defibrillation in open-chest dogs.
If a smaller capacitor is used to diminish device size, a larger initial voltage may be needed to deliver an equivalent amount of charge into the fibrillating tissue. Thus, two waveforms may have different leading edge voltages, but the same energy if there are differences in capacitance (Fig. 34). Therefore, the question of how to determine the “dose” of a shock arises. It is clearly important, because shocks of insufficient dose fail to terminate fibrillation and excessively strong shocks can lead to proarrhythmia or myocardial injury.
13 Barold SS, Ong LS, Heinle RA. Stimulation and sensing thresholds for cardiac pacing: electrophysiologic and technical aspects. Prog Cardiovasc Dis 1981; 24:1–24. 14 Lindemans FW, Denier Van der Gon JJ. Current thresholds and liminal size in excitation of heart muscle. Cardiovasc Res 1978; 12:477–85. 15 de Voogt WG. Pacemaker leads: performance and progress. Am J Cardiol 1999; 83:187D–191D. 16 Timmis G, Helland J, Westveer D. The evolution of low threshold leads. Clin Prog Pacing Electrophysiol 1983; 1:313–34.
Cardiac Pacing and Defibrillation: A Clinical Approach by David L. Hayes, Samuel J. Asirvatham, Paul A. Friedman