{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,30]],"date-time":"2026-03-30T20:31:45Z","timestamp":1774902705786,"version":"3.50.1"},"reference-count":20,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2021,5,31]],"date-time":"2021-05-31T00:00:00Z","timestamp":1622419200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2021,5,31]],"date-time":"2021-05-31T00:00:00Z","timestamp":1622419200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["BMC Cardiovasc Disord"],"published-print":{"date-parts":[[2021,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec>\n                <jats:title>Background<\/jats:title>\n                <jats:p>ICD patients with episodes of nonsustained ventricular tachycardias (NSVT) are at risk of appropriate therapies. However, the relationship between the cycle length (CL) of such NSVTs and the subsequent incidence of appropriate interventions is unknown.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Methods<\/jats:title>\n                <jats:p>416 ICD patients with LVEF\u2009&lt;\u200945% were studied. ICD programming was standardized. NSVT was defined as any VT of 5 or more beats at\u2009\u2265\u2009150\u00a0bpm occurred in the first 6\u00a0months after implantation that terminated spontaneously and was not preceded by any appropriate therapy. The mean follow-up was 41\u2009\u00b1\u200927\u00a0months.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>We analyzed 2201 NSVTs (mean CL\u2009=\u2009323\u00a0ms) that occurred in 250 patients; 111 of such episodes were fast (CL\u2009\u2264\u2009300\u00a0ms). Secondary prevention (HR\u2009=\u20091.7; <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.001), number of NSVT episodes (HR\u2009=\u20091.05; 95% CI 1.04\u20131.07; <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.001) and beta-blocker treatment (HR\u2009=\u20090.7; <jats:italic>p<\/jats:italic>\u2009=\u20090.04) were independent predictors of appropriate interventions; however, the mean CL of NSVTs was not (<jats:italic>p<\/jats:italic>\u2009=\u20090.6). There was a correlation between the mean CL of NSVTs and the CL of the first monomorphic VT: r\u2009=\u20090.88; <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.001. This correlation was especially robust in individuals with\u2009&gt;\u20095 NSVTs (r\u2009=\u20090.97; <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.001), with an agreement between both values greater than 95%. Patients with any fast NSVT experienced a higher incidence of VF episodes (26%) compared to those without NVSTs (3%) or with only slow NSVTs (7%); <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.001.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusions<\/jats:title>\n                <jats:p>Unlike the burden, the CL of NSVTs is not a predictor of subsequent appropriate interventions. However, there is a close relationship between the CL of NSVTs and that of arrhythmias that will later lead to appropriate therapies.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1186\/s12872-021-02087-2","type":"journal-article","created":{"date-parts":[[2021,5,31]],"date-time":"2021-05-31T21:16:12Z","timestamp":1622495772000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Cycle length of nonsustanied ventricular tachycardias among ICD patients: implications on subsequent appropriate therapies"],"prefix":"10.1186","volume":"21","author":[{"given":"Javier","family":"Jim\u00e9nez-Candil","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Olga","family":"Duran","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Armando","family":"Oterino","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jendri","family":"P\u00e9rez","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Juan Carlos","family":"Castro","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jes\u00fas","family":"Hern\u00e1ndez","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jos\u00e9","family":"Mor\u00ed\u00f1igo","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Manuel S\u00e1nchez","family":"Garc\u00eda","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pedro L.","family":"S\u00e1nchez","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2021,5,31]]},"reference":[{"issue":"12","key":"2087_CR1","doi-asserted-by":"publisher","first-page":"3198","DOI":"10.1161\/01.CIR.94.12.3198","volume":"94","author":"HC Doval","year":"1996","unstructured":"Doval HC, Nul DR, Grancelli HO, et al. 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