{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,2,21]],"date-time":"2025-02-21T23:10:04Z","timestamp":1740179404563,"version":"3.37.3"},"reference-count":14,"publisher":"Oxford University Press (OUP)","issue":"2","license":[{"start":{"date-parts":[[2020,2,29]],"date-time":"2020-02-29T00:00:00Z","timestamp":1582934400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2020,6,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:sec>\n                  <jats:title>Background<\/jats:title>\n                  <jats:p>Cardiac resynchronization therapy (CRT) could be an effective therapy for patients suffering from severe heart failure (HF) despite optimal medical therapy. However, it has been reported that about 30% of patients receive ineffective results even if CRT has been performed. In a recent study, four-dimensional computed tomography (4DCT) was shown to be useful for pre-operative planning in transcatheter aortic valve intervention. The 4DCT is reconstructed with 10% increments over the cardiac cycle so that the displacement of the myocardium can be evaluated over time. From the above, we considered that the most delayed site where we would implant the left ventricular (LV) lead could be recognized by 4DCT.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Case summary<\/jats:title>\n                  <jats:p>A 55-year-old man with a recurrent admission for HF indicated for CRT was referred to our hospital. In this patient, the 12-lead electrocardiogram (ECG) showed a relatively narrow QRS complex with a left bundle branch block pattern. An echocardiography demonstrated severe LV dysfunction. Although no dyssynchrony was detected, the LV lead was inserted into the most delayed site based on the 4DCT. Three-month later, the ejection fraction increased and the cardiothoracic ratio obviously shortened.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Discussion<\/jats:title>\n                  <jats:p>We experienced a case in which we could evaluate the effective implantation site for the LV lead based on the 4DCT even though the effective site was not detected by echocardiography, and we could implant the LV lead at that effective site. The 4DCT may be useful for implanting LV leads in effective sites.<\/jats:p>\n               <\/jats:sec>","DOI":"10.1093\/ehjcr\/ytaa033","type":"journal-article","created":{"date-parts":[[2020,2,29]],"date-time":"2020-02-29T13:09:55Z","timestamp":1582981795000},"page":"1-5","source":"Crossref","is-referenced-by-count":0,"title":["A left ventricular lead implantation at the latest site based on four-dimensional computed tomography: a case report"],"prefix":"10.1093","volume":"4","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6945-2932","authenticated-orcid":false,"given":"Akinori","family":"Matsumoto","sequence":"first","affiliation":[{"name":"Department of Cardiovascular Internal Medicine, Akashi Medical Center, 743-33 Yagi, Ohkubo-cho, Akashi, Hyogo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ryo","family":"Ogawa","sequence":"first","affiliation":[{"name":"Department of Radiology, Akashi Medical Center, 743-33 Yagi Ohkubo-cho, Akashi, Hyogo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Masafumi","family":"Maeda","sequence":"first","affiliation":[{"name":"Department of Radiology, Akashi Medical Center, 743-33 Yagi Ohkubo-cho, Akashi, Hyogo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Aya","family":"Inakami","sequence":"first","affiliation":[{"name":"Department of Radiology, Akashi Medical Center, 743-33 Yagi Ohkubo-cho, Akashi, Hyogo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"286","published-online":{"date-parts":[[2020,2,29]]},"reference":[{"key":"2020042405560926800_ytaa033-B1","doi-asserted-by":"crossref","first-page":"e0184133","DOI":"10.1371\/journal.pone.0184133","article-title":"Dynamics of the aortic annulus in 4D CT angiography for transcatheter aortic valve implantation patients","volume":"12","author":"Elattar","year":"2017","journal-title":"PLoS One"},{"key":"2020042405560926800_ytaa033-B2","doi-asserted-by":"crossref","first-page":"828","DOI":"10.1093\/ehjci\/jey064","article-title":"Skeletal myoblast sheet transplantation enhanced regional improvement of cardiac function","volume":"19","author":"Yoshida","year":"2018","journal-title":"Eur Heart J Cardiovasc Imaging"},{"key":"2020042405560926800_ytaa033-B3","doi-asserted-by":"crossref","first-page":"e235","DOI":"10.1161\/CIRCULATIONAHA.108.191095","article-title":"AHA\/ACCF\/HRS recommendations for the standardization and interpretation of the electrocardiogram: part III: intraventricular conduction disturbances: a scientific statement from the American Heart Association Electrocardiography and Arrhythmias Committee, Council on Clinical Cardiology; the American College of Cardiology Foundation; and the Heart Rhythm Society: endorsed by the International Society for Computerized Electrocardiology","volume":"119","author":"Surawicz","year":"2009","journal-title":"Circulation"},{"key":"2020042405560926800_ytaa033-B4"},{"key":"2020042405560926800_ytaa033-B5","doi-asserted-by":"crossref","first-page":"1070","DOI":"10.1093\/europace\/eut206","article-title":"2013 ESC guidelines on cardiac pacing and cardiac resynchronization therapy: the task force on cardiac pacing and resynchronization therapy of the European Society of Cardiology (ESC). 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