Ablation Points of Renal Sympathetic Denervation: The More, the Better?
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To the Editor:
We have recently read with great interest the report by Lewalter and Brodherr1 concerning a cooled tip renal denervation using a 3-dimensional nonfluoroscopic guiding system to treat resistant hypertension in a patient with renal failure. This approach allows for an ablation requiring only a minimal amount of contrast medium so that it can avoid renal function deterioration. What is more, it makes the anatomy of the renal arteries much more visible than conventional angiography. What is also worth mentioning is that using an irrigated catheter can adopt an achievement of a 10% to 20% drop in impedance at each location as ablation end point.2 …