Warren Jackman's Art of War: A Sniper's Approach to Catheter Ablation-Figure Chapter 3

Figure Chapter 3

Pdf Summary

The given document contains various figures and diagrams related to the topic of radiofrequency (RF) ablation for tissue heating. The document highlights the process of resistive heating and conductive heating in tissue when RF current is applied through an ablation electrode. It also explains the concept of power density and current density, which are important factors in determining the effectiveness of ablation. Different electrode sizes and their effects on lesion size and temperature are discussed.<br /><br />The document also discusses the impedance and power generated during RF ablation, as well as the temperature changes in tissue and at the electrode-tissue interface. The presence of blood flow is shown to affect the interface temperature and lesion size. Other factors such as saline irrigation and contact force are also discussed in relation to the efficacy of RF ablation.<br /><br />Different electrode orientations and sizes are analyzed to determine the power required to maintain a specific tissue-electrode interface temperature. The document also includes figures showing the difference between non-irrigated and irrigated ablation, as well as the effect of electrode size on lesion dimensions.<br /><br />Finally, the document discusses the use of RF ablation for treating atrial fibrillation and the importance of contact force and voltage measurements during the procedure. The parallel and perpendicular orientations of the electrode are also compared.

Keywords

radiofrequency ablation

tissue heating

ablation electrode

lesion size

temperature changes

impedance

blood flow

contact force

irrigated ablation

atrial fibrillation