Archive | 2021
Comparison Between New Confidense HD Coloring Carto Mapping Module and New Rhythmia Mapping System for Scar Related Atrial Tachycardia Treatment.
Abstract
Background. Scar-related atrial tachycardias (ATs) are very challenging\nand no comparative studies have been conducted between the up-to-date\nsystems, namely the new Confidense HD coloring mapping module (HD) and\nthe new Rhythmia (RM) mapping system. Objectives. Our study sought to\ncompare both strategies in terms of: (1) diagnosis and immediate\ntreatment success: (2) procedure parameters in AT presenting patients.\nMethods and Results. Overall, 38 patients (68±9 years old) were\nrandomized (HD=20, RM=18). The AT mechanisms did not differ between the\ngroups: macro/small loop reentrant mechanisms were more common in both\ngroups (12/20 [60%] versus 10/18 [56%], P=0.9), with the\nremaining diagnosed as multiloop (5/20 [25%] versus 4/18\n[22%]; p=0.9); focal (1/20 [5%] versus 2/18 [11%],\nP=0.9), and localized reentrant (2/20 [10%] versus 2/18\n[11%]). The procedure parameters were as follows: tachycardia cycle\nlength (275±30 vs. 280±50; p=0.7); number of activation maps per patient\n(2±1 vs 2±1; p=0.9); procedure time (138±90 vs. 139±90 min; p=0.98);\nX-ray time exposure (20±11 vs. 24±18 min; p=0.42); RF application time\n(39±36 vs. 25±28 min; p=0.21); and mean number of circuits per patient\n(1.8±1 vs. 1.6±0.9; 0.6). Acute success was obtained in 15/20 pts (75%)\nof the HD group and 14/18 (78%) of the RM group (p=0.9). The procedure\nfailed in 2 patients with the HD coloring and they were converted to the\nRM group without success. No crossover was carried out in the RM group.\nConclusions. This randomized study demonstrates that HD coloring and\nRhythmia systems exhibit a similar efficacy in achieving acute AT\ntermination.