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Each type of arrhythmia requires a unique diagnostic and therapeutic approach. The papillary muscles may also be a source of ventricular arrhythmias. Ablation of papillary muscle associated arrhythmias may be difficult due to the complexities of mapping, structural abnormalities and potentially the deep location of arrhythmia foci. Tools, such as intracardiac echocardiography, can be valuable.<\/jats:p>","DOI":"10.15420\/aer.2024.54","type":"journal-article","created":{"date-parts":[[2025,5,19]],"date-time":"2025-05-19T11:56:30Z","timestamp":1747655790000},"source":"Crossref","is-referenced-by-count":3,"title":["Fascicular and Papillary Muscle Arrhythmias in the Structurally Normal Heart"],"prefix":"10.15420","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9772-0308","authenticated-orcid":false,"given":"Travis D","family":"Richardson","sequence":"first","affiliation":[{"name":"Department of Cardiology, Vanderbilt University Medical Centre, Nashville, TN, US"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Roy M","family":"John","sequence":"additional","affiliation":[{"name":"Department of Cardiology, Stanford University, Palo Alto, CA, US"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"6096","published-online":{"date-parts":[[2025,5,19]]},"reference":[{"key":"ref0","unstructured":"Tawara S. 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