Gross specimen evaluation of myocardium post-injection
We performed gross examination of the myocardial specimen following
ablation and CNT hydrogel injection. The hydrogel could be seen
circumferentially around the ablated lesion at the points where the
needle entered the epicardium. Orthogonal transection showed that most
of the hydrogel was retained within the ablated tissue. Some hydrogel
did extrude from the lesion into areas of nonablated myocardium
(Figure 5 ).