{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,9]],"date-time":"2026-10-09T03:36:00Z","timestamp":1791516960580,"version":"4.3.4"},"reference-count":22,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2014,6,3]],"date-time":"2014-06-03T00:00:00Z","timestamp":1401753600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/100006279","name":"St. Jude Medical","doi-asserted-by":"crossref","award":["$10,000-$100,000"],"award-info":[{"award-number":["$10,000-$100,000"]}],"id":[{"id":"10.13039\/100006279","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Cardiovasc electrophysiol"],"published-print":{"date-parts":[[2014,7]]},"abstract":"<jats:title>Electromagnetic Interference with Ventricular Assist Device<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Hemodynamic instability hinders activation and entrainment mapping during ventricular tachycardia ablation. The Impella 2.5 microaxial flow device (MFD; Abiomed Inc., Danvers, MA, USA) is used to prevent hemodynamic instability during electrophysiologic study. However, electromagnetic interference (EMI) generated by this device can preclude accurate electroanatomic mapping.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Impella was placed in the left ventricle of 7 canines for circulatory support. Electroanatomic mapping during sinus rhythm, ventricular pacing, and ventricular fibrillation (VF) was performed using magnet\u2010 (CARTO3, Biosense Webster Inc., Diamond Bar, CA, USA) and impedance\u2010 (EnSite Velocity System\/EnSite NavX, St. Jude Medical Inc., St. Paul, MN, USA) based systems. Distance from device to points with severe EMI precluding acquisition was compared to points with mild\/no EMI. Two methods were used to reduce EMI: (1) titration of MFD performance, and (2) impedance\u2010only mapping combined with manual annotation of activation.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Severe EMI did not occur during impedance\u2010based mapping. Severe EMI was observed using CARTO3 at 9.4% of all points attempted at maximum performance level (P8) of device. Severe EMI occurred at points closer to device (40.1 \u00b1 16.8 mm) versus (55.5 \u00b1 20.0 mm) for mild\/no EMI, P &lt; 0.0001. Severe EMI using CARTO3 was resolved by either (1) reduction of performance from P8 to P6 or (2) impedance\u2010only mapping with manual annotation.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Concurrent use of MFD caused EMI to prevent acquisition of points with magnet\u2010based mapping. Predictors for EMI were distance from device and performance level. Temporary reductions to P6 or impedance\u2010only mapping are 2 methods to resolve EMI.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/jce.12437","type":"journal-article","created":{"date-parts":[[2014,4,24]],"date-time":"2014-04-24T08:12:45Z","timestamp":1398327165000},"page":"781-786","source":"Crossref","is-referenced-by-count":22,"title":["Compatibility of Electroanatomical Mapping Systems with a Concurrent Percutaneous Axial Flow Ventricular Assist Device"],"prefix":"10.1111","volume":"25","author":[{"given":"VAIBHAV R.","family":"VAIDYA","sequence":"first","affiliation":[{"name":"Department of Internal Medicine Mayo Clinic  Rochester Minnesota USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"CHRISTOPHER V.","family":"DESIMONE","sequence":"additional","affiliation":[{"name":"Division of Cardiovascular Diseases Department of Internal Medicine Mayo Clinic  Rochester Minnesota 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