Ontology type: schema:ScholarlyArticle
2015-03
AUTHORSMasayoshi Yamamoto, Yoshihiro Seo, Tomoko Ishizu, Naoto Kawamatsu, Kimi Sato, Akinori Sugano, Akiko Atsumi, Yoshie Harimura, Tomoko Machino-Ohtsuka, Fumiko Sakamaki, Kazutaka Aonuma
ABSTRACTBACKGROUND: Cardiac resynchronization therapy (CRT) may improve left ventricular (LV) diastolic dysfunction as well as systolic dysfunction. Diastolic dysfunction is a key for prognosis in patients with heart failure; therefore, we aimed to clarify the impact of CRT on diastolic function and prognosis. METHODS: In 67 patients who underwent CRT, LV diastolic function was assessed by pulsed Doppler transmitral flow pattern at baseline and 1 week after CRT, and classified into restrictive filling pattern (RFP) and non-RFP groups. Volume responders were defined by reduction of LV end-systolic volume >15% at 6 months after CRT. The clinical endpoint comprised death from any cause or unplanned hospitalization for a major cardiovascular event (MACE). RESULTS: During the follow-up period (479 ± 252 days), 26 patients (38.8%) had reached the endpoint of MACE. In Cox proportional hazard analyses, RFP at 1 week after CRT was associated with the endpoints independently of age and New York Heart Association (NYHA) class IV at baseline. Thirty (44.8%) patients were identified as volume responders, who had better prognosis than non-responders. Patients were classified into 4 groups based on their filling pattern at 1 week after CRT and volume responses. The worst prognosis was observed in the RFP and non-responder group, and the best was observed in the non-RFP and responder group. For the remaining 2 groups with intermediate prognosis, the RFP and responder group showed poorer prognosis compared to the non-RFP and non-responder group. CONCLUSIONS: Persistent RFP after CRT may be a strong prognostic predictor, which should be treated with more intensive therapy to improve the prognosis of patients following CRT. More... »
PAGES20-26
http://scigraph.springernature.com/pub.10.1007/s12574-014-0234-0
DOIhttp://dx.doi.org/10.1007/s12574-014-0234-0
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PUBMEDhttps://www.ncbi.nlm.nih.gov/pubmed/26184518
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