Applicability of computed tomography preoperative assessment of the LAA in LV summit ablations

• DOI: 10.1007/s10840-020-00817-8
• Publication Date: 2020-07-14T08:02:42Z
• Authors: Marcin Kuniewicz; M. Krupiński; M. Gosnell; K. Budnicka; N. Jakob; G. Karkowski; M. Urbańczyk-Zawa...; J. Lelakowski; J. Walocha
• Keywords: Computed Tomography Angiography; Caliber

Abstract Purpose Ventricular arrhythmias originating from the left ventricular summit (LVS) may present with challenges for catheter ablation. Recently, atrial appendage (LAA) became a new vantage point mapping and ablating that region, but data of possible usefulness is limited. Methods From September to December 2019, we retrospectively analyzed 48 consecutive patient hearts (20 male; mean age 57.9y ± 11.56) undergoing diagnostic coronary vessel imaging in 64 dual-source computer tomography angiography (CTA). Distances LAA LVS, shape type, arteries LVS region were measured. Also, compared true area CTA calculated formula derived definition. Results The was 291.58 mm 2 (± 115.5) while CT 263.33 99.49) ( p = 0.44). inaccessible 133.42 72.89), accessible 95.67 72.77). coverage over 196.08 —which approximately 75% size general. most common chicken wing (50%); windsock has highest on average (80.23%), followed by (59.88%), broccoli (47.72%), cactus (46.98%). distance surface 5.14 (1.5 10 mm) not correlated BMI. 98% transition between great cardiac vein anterior interventricular vein. Conclusion Angio-CT assessment structures be helpful decision making before an ablation procedure. appears promising approach arrhythmias.