{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,29]],"date-time":"2026-08-29T14:08:35Z","timestamp":1788012515207,"version":"build-2784847793"},"reference-count":38,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2020,12,6]],"date-time":"2020-12-06T00:00:00Z","timestamp":1607212800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal of Arrhythmia"],"published-print":{"date-parts":[[2021,2]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Right ventricular (RV) pacing causes left ventricular (LV) dyssynchrony sometimes resulting in pacing\u2010induced cardiomyopathy. However, RV pacing for hypertrophic obstructive cardiomyopathy is one of the treatment options. LV flow energy loss (EL) using vector flow mapping (VFM) is a novel hemodynamic index for assessing cardiac function. Our study aimed to elucidate the impact of RV pacing on EL in normal LV function and hypertrophic cardiomyopathy (HCM) patients.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>A total of 36 patients with dual\u2010chamber pacemakers for sick sinus syndrome or implantable cardioverter defibrillators for fatal ventricular tachyarrhythmias were enrolled. All patients were divided into two groups: 16 patients with HCM (HCM group) and others (non\u2010HCM group). The absolute changes in EL under AAI (without RV pacing) and DDD (with RV pacing) modes were assessed using VFM on color Doppler echocardiography.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>In the non\u2010HCM group, the mean systolic EL significantly increased from the AAI to DDD modes (14.0\u00a0\u00b1\u00a07.7 to 17.0\u00a0\u00b1\u00a08.6\u00a0mW\/m, <jats:italic>P<\/jats:italic>\u00a0=\u00a0.003), whereas the mean diastolic EL did not change (19.0\u00a0\u00b1\u00a012.3 to 17.0\u00a0\u00b1\u00a014.8\u00a0mW\/m, <jats:italic>P<\/jats:italic>\u00a0=\u00a0.231). In the HCM group, the mean systolic EL significantly decreased from the AAI to DDD modes (26.7\u00a0\u00b1\u00a014.2 to 21.6\u00a0\u00b1\u00a011.9\u00a0mW\/m, <jats:italic>P<\/jats:italic>\u00a0&lt;\u00a0.001), whereas the mean diastolic EL did not change (28.7\u00a0\u00b1\u00a016.4 to 23.9\u00a0\u00b1\u00a019.7\u00a0mW\/m, <jats:italic>P<\/jats:italic>\u00a0=\u00a0.130).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>RV pacing increased the mean systolic EL in patients without HCM. Conversely, RV pacing decreased the mean systolic EL in patients with HCM.<\/jats:p><\/jats:sec>","DOI":"10.1002\/joa3.12472","type":"journal-article","created":{"date-parts":[[2020,12,6]],"date-time":"2020-12-06T14:04:59Z","timestamp":1607263499000},"page":"203-211","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Energy loss by right ventricular pacing: Patients with versus without hypertrophic cardiomyopathy"],"prefix":"10.1002","volume":"37","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4098-7682","authenticated-orcid":false,"given":"Yuki","family":"Arakawa","sequence":"first","affiliation":[{"name":"Department of Cardiovascular Medicine Kitasato University School of Medicine Sagamihara 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