{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,1]],"date-time":"2026-04-01T20:12:03Z","timestamp":1775074323497,"version":"3.50.1"},"reference-count":50,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2019,10,6]],"date-time":"2019-10-06T00:00:00Z","timestamp":1570320000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"funder":[{"name":"Health Research Council"},{"name":"Middlemore Cardiac Trust"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal of Arrhythmia"],"published-print":{"date-parts":[[2020,2]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>The ANZACS\u2010QI Cardiac Implanted Device Registry (ANZACS\u2010QI DEVICE) collects nationwide data on cardiac implantable electronic devices in New Zealand (NZ). We used the registry to describe contemporary NZ use of implantable cardioverter defibrillator (ICD) and cardiac resynchronization therapy (CRT).<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>All ICD and CRT Pacemaker implants recorded in ANZACS\u2010QI DEVICE between 1 January 2014 and 31 December 2017 were analyzed.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Of 1579 ICD implants, 1152 (73.0%) were new implants, including 49.0% for primary prevention and 51.0% for secondary prevention. In both groups, median age was 62\u00a0years and patients were predominantly male (81.4% and 79.2%, respectively). Most patients receiving a primary prevention ICD had a history of clinical heart failure (80.4%), NYHA class II\u2010III symptoms (77.1%) and LVEF \u226435% (96.9%). In the secondary prevention ICD cohort, 88.4% were for sustained ventricular tachycardia or survived cardiac arrest from ventricular arrhythmia. Compared to primary prevention CRT Defibrillators (n\u00a0=\u00a0155), those receiving CRT Pacemakers (n\u00a0=\u00a0175) were older (median age 74 vs 66\u00a0years) and more likely to be female (38.3% vs 19.4%). Of the 427 (27.0%) ICD replacements (mean duration 6.3\u00a0years), 46.6% had received appropriate device therapy while 17.8% received inappropriate therapy. The ICD implant rate was 119 per million population with regional variation in implant rates, ratio of primary prevention ICD implants, and selection of CRT modality.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>In contemporary NZ practice three\u2010quarters of ICD implants were new implants, of which half were for primary prevention. The majority met current guideline indications. Patients receiving CRT pacemaker were older and more likely to be female.<\/jats:p><\/jats:sec>","DOI":"10.1002\/joa3.12244","type":"journal-article","created":{"date-parts":[[2019,10,6]],"date-time":"2019-10-06T07:56:55Z","timestamp":1570348615000},"page":"153-163","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Implantable cardioverter defibrillator and cardiac resynchronization therapy use in New Zealand (ANZACS\u2010QI 33)"],"prefix":"10.1002","volume":"36","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3546-4863","authenticated-orcid":false,"given":"Fang Shawn","family":"Foo","sequence":"first","affiliation":[{"name":"Department of Cardiology Middlemore Hospital Auckland New Zealand"},{"name":"Department of Cardiology Auckland City Hospital Auckland New Zealand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mildred","family":"Lee","sequence":"additional","affiliation":[{"name":"Department 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