文献一覧: Hiroaki Kitaoka (著者)

6 0 0 0 OA External Validation of the Japanese Clinical Score for Mortality Prediction in Patients With Acute Heart Failure

著者: Kensuke Takabayashi Tomoyuki Hamada Toru Kubo Kotaro Iwatsu Tsutomu Ikeda Yohei Okada Tetsuhisa Kitamura Shouji Kitaguchi Takeshi Kimura Hiroaki Kitaoka Ryuji Nohara
出版者: The Japanese Circulation Society
雑誌: Circulation Journal (ISSN:13469843)
巻号頁・発行日: pp.CJ-22-0652, (Released:2022-12-28)
参考文献数: 22
被引用文献数: 1

Background: To predict mortality in patients with acute heart failure (AHF), we created and validated an internal clinical risk score, the KICKOFF score, which takes physical and social aspects, in addition to clinical aspects, into account. In this study, we validated the prediction model externally in a different geographic area.Methods and Results: There were 2 prospective multicenter cohorts (1,117 patients in Osaka Prefecture [KICKOFF registry]; 737 patients in Kochi Prefecture [Kochi YOSACOI study]) that had complete datasets for calculation of the KICKOFF score, which was developed by machine learning incorporating physical and social factors. The outcome measure was all-cause death over a 2-year period. Patients were separated into 3 groups: low risk (scores 0–6), moderate risk (scores 7–11), and high risk (scores 12–19). Kaplan-Meier curves clearly showed the score’s propensity to predict all-cause death, which rose independently in higher-risk groups (P<0.001) in both cohorts. After 2 years, the cumulative incidence of all-cause death was similar in the KICKOFF registry and Kochi YOSACOI study for the low-risk (4.4% vs. 5.3%, respectively), moderate-risk (25.3% vs. 22.3%, respectively), and high-risk (68.1% vs. 58.5%, respectively) groups.Conclusions: The unique prediction score may be used in different geographic areas in Japan. The score may help doctors estimate the risk of AHF mortality, and provide information for decisions regarding heart failure treatment.

2022-12-28 07:59:20
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3 0 0 0 OA Unilateral Pulmonary Edema in Patients With Acute Mitral Regurgitation Caused by Chordal Rupture

著者: Yu-ki Nishimura Junya Komatsu Hiroki Sugane Hayato Hosoda Ryu-ichiro Imai Yoko Nakaoka Koji Nishida Shu-ichi Seki Toru Kubo Naohito Yamasaki Hiroaki Kitaoka Sho-ichi Kubokawa Kazuya Kawai Naohisa Hamashige Yoshinori Doi
出版者: The Japanese Circulation Society
雑誌: Circulation Reports (ISSN:24340790)
巻号頁・発行日: vol.4, no.12, pp.571-578, 2022-12-09 (Released:2022-12-09)
参考文献数: 16
被引用文献数: 1

Background: Cardiogenic unilateral pulmonary edema (UPE) has been reported as an unusual condition and to occur in association with severe mitral regurgitation (MR). However, the prevalence of UPE in patients with severe MR remains unknown.Methods and Results: Among 143 consecutive patients with chordal rupture and significant MR, 38 patients with acute severe MR were studied. The prevalence of UPE was 50% (19 patients); all these patients had right-sided UPE. Eight (21%) patients had bilateral pulmonary edema (BPE). All 8 patients with BPE and 18 of 19 patients with UPE had chordal rupture of the posterior leaflet. All patients with UPE and BPE had severe MR with similar left atrial size. Chest radiographs taken ≤48 h from symptom onset diagnosed UPE in 15 of 19 (79%) patients and BPE in 3 of 8 (38%) patients (P=0.037). Chest radiographs taken >48 h from symptom onset diagnosed UPE in 4 (21%) patients and BPE in 5 (62%) patients (P=0.037).Conclusions: The prevalence of UPE was estimated as 50%; it was most frequently right sided and almost always associated with chordal rupture of the posterior leaflet. UPE is not rare, but common, particularly shortly after the development of acute severe MR caused by chordal rupture.

2023-07-18 23:27:51
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2 0 0 0 OA External Validation of the Japanese Clinical Score for Mortality Prediction in Patients With Acute Heart Failure

著者: Kensuke Takabayashi Tomoyuki Hamada Toru Kubo Kotaro Iwatsu Tsutomu Ikeda Yohei Okada Tetsuhisa Kitamura Shouji Kitaguchi Takeshi Kimura Hiroaki Kitaoka Ryuji Nohara
出版者: The Japanese Circulation Society
雑誌: Circulation Journal (ISSN:13469843)
巻号頁・発行日: vol.87, no.4, pp.543-550, 2023-03-24 (Released:2023-03-24)
参考文献数: 22
被引用文献数: 1

2023-07-25 19:22:14
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1 0 0 0 OA Patients’ Characteristics and Clinical Course of Hypertrophic Cardiomyopathy in a Regional Japanese Cohort ― Results From Kochi RYOMA Study ―

著者: Toru Kubo Takayoshi Hirota Yuichi Baba Yuri Ochi Asa Takahashi Naohito Yamasaki Naohisa Hamashige Katsuhito Yamamoto Fumiaki Kondo Kanji Bando Eisuke Yamada Takashi Furuno Toshikazu Yabe Yoshinori L Doi Hiroaki Kitaoka
出版者: The Japanese Circulation Society
雑誌: Circulation Journal (ISSN:13469843)
巻号頁・発行日: pp.CJ-17-0845, (Released:2018-01-13)
参考文献数: 30
被引用文献数: 21

Background:There have been few studies on the clinical course of hypertrophic cardiomyopathy (HCM) in a community-based patient cohort in Japan.Methods and Results:In 2004, we established a cardiomyopathy registration network in Kochi Prefecture (the Kochi RYOMA study) that consisted of 9 hospitals, and finally, 293 patients with HCM were followed. The ages at registration and at diagnosis were 63±14 and 56±16 years, respectively, and 197 patients (67%) were male. HCM-related deaths occurred in 23 patients during a mean follow-up period of 6.1±3.2 years. The HCM-related 5-year survival rate was 94%. In addition, a total of 77 cardiovascular events that were clinically severe occurred in 70 patients, and the HCM-related 5-year event-free rate was 80%. Multivariate Cox proportional hazards model analysis showed that the presence of NYHA class III at registration was a significant predictor of HCM-related deaths and that the presence of atrial fibrillation, lower fractional shortening and presence of left ventricular outflow tract obstruction in addition to NYHA class III were significant predictors of cardiovascular events.Conclusions:In our unselected registry in an aged Japanese community, HCM mortality was favorable, but one-fifth of the patients commonly suffered from HCM-related adverse cardiovascular events during the 5-year follow-up period. Careful management of HCM patients is needed, particularly for those with the above-mentioned clinical determinants.

2018-01-13 12:56:53
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1 0 0 0 OA Long-Term Prognosis of Dilated Cardiomyopathy Revisited

著者: Yoshihisa Matsumura Jun Takata Hiroaki Kitaoka Toru Kubo Yuichi Baba Eri Hoshikawa Tomoyuki Hamada Makoto Okawa Nobuhiko Hitomi Kyoko Sato Naohito Yamasaki Toshikazu Yabe Takashi Furuno Masanori Nishinaga Yoshinori Doi
出版者: 日本循環器学会
雑誌: Circulation Journal (ISSN:13469843)
巻号頁・発行日: vol.70, no.4, pp.376-383, 2006 (Released:2006-03-25)
参考文献数: 42
被引用文献数: 21 42

Background Because of their favorable prognostic effects, angiotensin converting enzyme inhibitors (ACEI), angiotensin II receptor blockers (ARB) and β blockers have become background therapy in dilated cardiomyopathy (DCM). However, there are few reports concerning the long-term prognosis of Japanese patients with DCM in relation to these treatments. Methods and Results One hundred and fifty patients with DCM were divided into 2 groups: group A (n=46) (diagnosis: 1982-1989) and group B (n=104) (diagnosis: 1990-2002). During follow-up period of 6.9±4.8 years, 62 patients died and 1 patient had a heart transplant. The survival rate at 5 and 10 years was 60.9% and 34.8%, respectively, in group A patients, and 80.9% and 65.3%, respectively, in group B patients (p=0.0079). In group A patients, ACEI/ARB or β blockers were less frequently used (p<0.0001), whereas antiarrhythmics (class Ia or Ib) were more often used (p<0.0001). The patients treated with ACEI/ARB and β blockers showed a better survival rate than those without (p<0.0001). The patients with antiarrhythmics showed a worse survival rate than those without (p<0.0001). Conclusion The prognosis of Japanese patients with DCM has significantly improved over the past 20 years. This improvement may be explained partly through the increased use of ACEI/ARB and β blockers and a declining use of antiarrhythmics. (Circ J 2006; 70: 376 - 383)

2014-10-16 00:10:58
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