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. 2021 Apr 9;12:640295. doi: 10.3389/fphys.2021.640295

Figure 2.

Figure 2

Changes in SLGP before and after ablation. (A) Location of the SLGP. The place marked with an arrow is the position of the SLGP (a,b); before and after SLGP stimulation, different types of arrhythmias were observed (c–e). (B) Silver staining of the SLGP. (C) Representative images of HE staining for SLGP: (a) dozens of neurons in SLGP were observed in subepicardial fat tissue; (b) several neurons were observed between cardiac muscle; (c) The nerve fibers and neurons in a nerve bundle; (d) the nerve fiber bundle; (e) disorder of subepicardial collagen tissue structure after SLGP ablation; (f) ganglion cells developed vacuolar degeneration after SLGP ablation. SVC, superior vena cava; IVC, inferior vena cava; RSPV, right superior pulmonary vein; RIPV, right inferior pulmonary vein; LSPV, left superior pulmonary vein; LIPV, left inferior pulmonary vein; SLGP, superior left ganglionated plexus; LOM, ligament of Marshall; HRA, high right atrium; HE, hematoxylin and eosin; other abbreviations as in Figure 1.