{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,13]],"date-time":"2026-02-13T23:05:25Z","timestamp":1771023925144,"version":"3.50.1"},"reference-count":23,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2018,4,6]],"date-time":"2018-04-06T00:00:00Z","timestamp":1522972800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Cardiovasc electrophysiol"],"published-print":{"date-parts":[[2018,6]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Introduction<\/jats:title><jats:p>The ConfiDENSE\u2122 module (Carto3 v4) allows rapid annotation of endocardial electrograms acquired by multielectrode (ME) mapping. However, its accuracy in assessing atrial voltages is unknown.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods and results<\/jats:title><jats:p>Two ConfiDENSE\u2122 left atrial voltage maps were created during continuous pacing in 20 patients undergoing catheter ablation for persistent AF using a ME lasso catheter and a contact force (CF) sensing ablation catheter. The automated tissue proximity indicator (TPI) filter was then applied to the ME map to yield a TPI map. Reference maps (RM) were created offline by a blinded observer by manually assessing all points against fidelity criteria. Bipolar voltages and proportion of low voltage points (&lt;\u00a00.5\u00a0mV) derived from the ME, CF, and TPI maps were compared with those derived from the RM.<\/jats:p><jats:p>Note that 853 \u00b1 365 points, 252 \u00b1 184 points, and 144 \u00b1 73 were collected for ME, TPI, and CF maps, respectively, and 429 \u00b1 153 points were included in the RM. Voltages with CF and TPI maps were similar to those with RM (1.57 \u00b1 0.47\u00a0mV vs. 1.63 \u00b1 0.31\u00a0mV, P\u00a0=\u00a00.57 and 1.50 \u00b1 0.38\u00a0mV vs. 1.63 \u00b1 0.31\u00a0mV, P\u00a0=\u00a00.07, respectively), whereas ME maps showed a significantly lower mean voltage (1.00 \u00b1 0.22\u00a0mV, P\u00a0&lt;\u00a00.001). As compared to RM maps (17 \u00b1 8%), low voltage points were significantly overestimated by the ME maps (50 \u00b1 9% (P\u00a0&lt;\u00a00.001) and TPI maps (28 \u00b1 13% (P\u00a0&lt;\u00a00.001), but not by the CF maps (22 \u00b1 14%, P\u00a0=\u00a00.17).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Application of the TPI filter to ConfiDENSE maps significantly increases the quality of the voltage data, conserving a reasonable point density, but still overestimates low voltage points as compared to CF\u2010sensing maps or maps reviewed manually.<\/jats:p><\/jats:sec>","DOI":"10.1111\/jce.13472","type":"journal-article","created":{"date-parts":[[2018,3,5]],"date-time":"2018-03-05T17:47:50Z","timestamp":1520272070000},"page":"881-888","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":16,"title":["Accuracy of left atrial bipolar voltages obtained by ConfiDENSE multielectrode mapping in patients with 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