{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,17]],"date-time":"2026-09-17T14:00:10Z","timestamp":1789653610418,"version":"4.0.0"},"reference-count":10,"publisher":"Wiley","issue":"9","license":[{"start":{"date-parts":[[2018,8,7]],"date-time":"2018-08-07T00:00:00Z","timestamp":1533600000000},"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":["Pacing Clinical Electrophis"],"published-print":{"date-parts":[[2018,9]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>Ablation of premature ventricular complexes (PVCs) originating from left\u2010sided papillary muscles is challenging. We tested a new approach by performing high\u2010density mapping of PVC.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods and results<\/jats:title><jats:p>We used a 20\u2010pole deflectable spiral catheter during ablation procedures in four\u00a0consecutive patients. Three presented with mitral valve prolapse, one with dilated cardiomyopathy. PVC burden was 24 \u00b1 13%. The procedures lasted 182 \u00b1 55.4 minutes, including 10 \u00b1 3.2 minutes of radiofrequency. In all patients, mapping evidenced internal primary activation relative to the left ventricle shell (mean distance 21.3 \u00b1 5.1 mm). Endocavitary prematurity was \u201338.3 \u00b1 4.8 ms. Primary ablation success was achieved for all patients.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>High\u2010density mapping of the papillary muscles in the left ventricle using a spiral catheter may be feasible. We identified the PVC foci away from the left ventricular shell. This consolidates the assumption for the origin of these ectopic beats at the junction between the chordae tendineae and the papillary muscles.<\/jats:p><\/jats:sec>","DOI":"10.1111\/pace.13417","type":"journal-article","created":{"date-parts":[[2018,6,27]],"date-time":"2018-06-27T05:54:50Z","timestamp":1530078890000},"page":"1071-1077","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["High\u2010density mapping for catheter ablation of premature ventricular complexes originating from left ventricular papillary muscles: A case series"],"prefix":"10.1111","volume":"41","author":[{"given":"Linda","family":"Koutbi","sequence":"first","affiliation":[{"name":"Department of Cardiology, Assistance Publique \u2013 H\u00f4pitaux de Marseille (APHM), Aix\u2010Marseille University Timone Hospital  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