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Fig. 1 | BMC Cardiovascular Disorders

Fig. 1

From: Mapping and ablation of left atrial roof-dependent tachycardias using an ultra-high resolution mapping system

Fig. 1

A An ultra-high resolution activation map revealed a clockwise roof-dependent AT with slow conduction on the LA roof (TCL = 244 ms) (left panel). The white arrows show the propagation of the activation. A voltage map shows an LVA on the LA roof (right panel). B The valley (green curtain, white arrow) on the global activation histogram (skyline, blue square) corresponds to the isthmus of the AT (highlighted area). Please note that low-voltage fractionated signals (yellow arrows) during the time period of the valley of the skyline were identified in the critical isthmus. LAA left atrial appendage, LI(S)PV left inferior (superior) pulmonary vein, RI(S)PV right inferior (superior) pulmonary vein, TCL tachycardia cycle length

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BMC Cardiovascular Disorders

ISSN: 1471-2261

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