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5 ± 2.7vs. 4.9 ± 3.1g, P=.001). The impedance drop for each lesion was larger in the visualized sheath group than conventional sheath group (10.7 ± 6.5vs. 9.8 ± 5.5 ohms, P.001). The incidence of acute PV reconnections per patient (30%vs. 23%, P=.56) and per PV segment (2.5%vs. 2.3%, P=.83) were similar between the two groups. No major complications occurred in either sheath group. The use of visualized sheaths may reduce the fluoroscopic time and improve the catheter stability during the PVI. The use of visualized sheaths may reduce the fluoroscopic ti