Download Catheter Ablation of Cardiac Arrhythmias: Basic Concepts and by David J. Wilber M.D., Douglas L. Packer M.D., William G. PDF

By David J. Wilber M.D., Douglas L. Packer M.D., William G. Stevenson M.D.

Radiofrequency Catheter Ablation of Cardiac Arrhythmias has been so broadly up-to-date for its 3rd variation that the publication now incorporates a new identify: Catheter Ablation of Cardiac Arrhythmias: simple options and medical functions. The editors convey you 21 polished chapters, each one updating the basics and progressing to complicated ideas, offering state of the art wisdom with hugely appropriate fabric for skilled electrophysiologists in addition to fellows in training.This streamlined re-creation features:• new editors, either largely released and leaders within the box of catheter ablation• 21 rather than 39 chapters, accomplished through concentrating on basic subject matters of huge curiosity and assimilating details from quite a lot of assets• Fewer authors, selected for his or her famous contributions to the themes less than dialogue, delivering a extra built-in and coherent process• Anatomic insights from prime pathologist Siew Yen Ho, built-in with new details from imaging technologiesEach bankruptcy facing ablation of a selected arrhythmia beneficial properties the author's own method of ablation of the arrhythmia, together with sensible "how-to" assistance, and a assessment of capability pitfalls. exchange ways and adaptations are succinctly summarized. unique figures and drawings illustrate particular techniques to enhance the usability of the publication.

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Additional info for Catheter Ablation of Cardiac Arrhythmias: Basic Concepts and Clinical Applications, Third Edition

Example text

65] assessed the effects of radiofrequency energy and tissue heating on myocardial conduction in 28 vitro. In this experiment, they surgically created an isthmus in a preparation of canine ventricular myocardium superfused at 37 °C. They then heated this tissue with radiofrequency energy and measured the temperature at which conduction block through the isthmus was observed in response to pacing. 4 °C. The dV/dt remained constant up to 45 °C, then began to fall between 45 °C and 50 °C. 5 °C, the tissue was inexcitable (Fig.

Temperature-induced transitions of function and structure in sarcoplasmic reticulum membranes. J Mol Biol 1973;81:483–504. 65 Simmers TA, de Bakker JM, Wittkampf FH, Hauer RN. Effects of heating with radiofrequency power on myocardial impulse conduction: is radiofrequency ablation exclusively thermally mediated? J Cardiovasc Electrophysiol 1996;7: 243–7. 34 66 Wood MA, Fuller IA. Acute and chronic electrophysiologic changes surrounding radiofrequency lesions. J Cardiovasc Electrophysiol 2002;13:56 – 61.

Since high source temperatures and high power amplitudes should result in large lesions, one might conclude that in order to maximize the lesion size, maximum power should always be applied during catheter ablation. However, there is an upper limit to the magnitude of RF power that can be safely and effectively applied. As long as tissue temperatures do not exceed 100 °C, ablation proceeds unimpeded. If the electrode–tissue interface temperature reaches this threshold, however, blood at the surface begins to boil.

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