著者

Michikazu Nakai Yoshitaka Iwanaga Yoko Sumita Koshiro Kanaoka Rika Kawakami Masanobu Ishii Keiji Uchida Nobutaka Nagano Takeo Nakayama Kunihiro Nishimura Kazufumi Tsuchihashi Kazuo Kimura Yoshihiro Saito Kenichi Tsujita Hisao Ogawa Yoshihiro Miyamoto Satoshi Yasuda on the behalf of the JROAD Investigators

出版者

The Japanese Circulation Society

雑誌

Circulation Reports (ISSN:24340790)

巻号頁・発行日

vol.3, no.3, pp.131-136, 2021-03-10 (Released:2021-03-10)

参考文献数

25

被引用文献数

12 37

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Background:Big data systems such as diagnosis procedure combination (DPC) datasets have recently been used for research purposes. However, there have been few validation studies to determine the accuracy of diagnoses. The aim of this study was to validate and evaluate 2 diagnoses, namely acute myocardial infarction (AMI) and heart failure (HF), using International Classification of Diseases, 10th revision (ICD-10) codes in the Japanese Registry Of All cardiac and vascular Disease (JROAD)-DPC database.Methods and Results:ICD-10 codes I21.0–I21.9 and I50.0–I50.9 were used to identify AMI and HF, respectively, in the JROAD-DPC database. Diagnoses of AMI and HF were validated in clinical datasets assessing sensitivity and positive predictive value (PPV). Over 1–2 years, 742 patients hospitalized for AMI and 1,368 patients hospitalized for HF were identified in the DPC dataset. Sensitivity and PPV for AMI were 78.9% and 78.8%, respectively. When emergency hospitalization was included as a criterion, PPV increased to 84.9%. For HF, sensitivity and PPV were 84.7% and 57.0%, respectively. When emergency hospitalization and acute HF were included as criteria, PPV increased to 83.0%.Conclusions:Using ICD-10 codes for AMI and HF diagnoses among hospitalized patients, the DPC dataset showed acceptable concordance with clinical datasets. PPV increased when any conditions of hospitalization were included, especially in HF.

著者

Ken Okumura Hirofumi Tomita Michikazu Nakai Eitaro Kodani Masaharu Akao Shinya Suzuki Kenshi Hayashi Mitsuaki Sawano Masahiko Goya Takeshi Yamashita Keiichi Fukuda Hisashi Ogawa Toyonobu Tsuda Mitsuaki Isobe Kazunori Toyoda Yoshihiro Miyamoto Hiroaki Miyata Tomonori Okamura Yusuke Sasahara for the J-RISK AF Research Group

出版者

The Japanese Circulation Society

雑誌

Circulation Journal (ISSN:13469843)

巻号頁・発行日

vol.85, no.8, pp.1254-1262, 2021-07-21 (Released:2021-07-21)

参考文献数

22

被引用文献数

1 15

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Background:Recently, identification of independent risk factors for ischemic stroke in Japanese non-valvular atrial fibrillation (NVAF) patients was made by analyzing the 5 major Japanese registries: J-RHYTHM Registry, Fushimi AF Registry, Shinken Database, Keio interhospital Cardiovascular Studies, and the Hokuriku-Plus AF Registry.Methods and Results:The predictive value of the risk scheme in Japanese NVAF patients was assessed. Of 16,918 patients, 12,289 NVAF patients were analyzed (mean follow up, 649±181 days). Hazard ratios (HRs) of each significant, independent risk factor were determined by using adjusted Cox-hazard proportional analysis. Scoring system for ischemic stroke was created by transforming HR logarithmically and was estimated by c-statistic. During the 21,820 person-years follow up, 241 ischemic stroke events occurred. Significant risk factors were: being elderly (aged 75–84 years [E], HR=1.74), extreme elderly (≥85 years [EE], HR=2.41), having hypertension (H, HR=1.60), previous stroke (S, HR=2.75), type of AF (persistent/permanent) (T, HR=1.59), and low body mass index <18.5 kg/m2(L, HR=1.55) after adjusting for oral anticoagulant treatment. The score was assigned as follows: 1 point to H, E, L, and T, and 2 points to EE and S (HELT-E2S2score). The C-statistic, using this score, was 0.681 (95% confidence interval [CI]=0.647–0.714), which was significantly higher than those using CHADS2(0.647; 95% CI=0.614–0.681, P=0.027 for comparison) and CHA2DS2-VASc scores (0.641; 95% CI=0.608–0.673, P=0.008).Conclusions:The HELT-E2S2score may be useful for identifying Japanese NVAF patients at risk of ischemic stroke.

著者

Shiro Uemura Hiroshi Okamoto Michikazu Nakai Kunihiro Nishimura Yoshihiro Miyamoto Satoshi Yasuda Nobuhiro Tanaka Shun Kohsaka Kazushige Kadota Yoshihiko Saito Hiroyuki Tsutsui Issei Komuro Yuji Ikari Hisao Ogawa Masato Nakamura

出版者

The Japanese Circulation Society

雑誌

Circulation Journal (ISSN:13469843)

巻号頁・発行日

pp.CJ-19-0004, (Released:2019-04-24)

参考文献数

33

被引用文献数

17

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Background:Primary percutaneous coronary intervention (pPCI) is strongly recommended by guidelines for patients presenting with acute myocardial infarction (AMI), but its applications in elderly patients are less clear.Methods and Results:The JROAD-DPC is a Japanese nationwide registry for patients with cardiovascular diseases combined with an administrative claim-based database. Among 2,369,165 records from 2012 to 2015, data for 115,407 AMI patients were extracted for this study. Elderly patients (≥75 years) comprised 45,645 subjects (39.6%), and received pPCI less frequently (62.2%) than younger patients (79.2%, P<0.001). Clinical variables such as higher age, female sex, higher Killip class, and renal dysfunction, but not functional status on admission, were predictors of non-application of pPCI. Endpoint 30-day mortality increased with aging, and was significantly higher in elderly patients (10.7%) than in younger patients (3.8%, P<0.001). Indeed, pPCI was independently associated with lower 30-day mortality only in subgroups of patients aged ≥60 years. Propensity score-matching analysis confirmed a similar reduction in endpoint 30-day mortality with pPCI in elderly patients. Duration of hospitalization was significantly shorter and functional ability on discharge was significantly better in elderly patients who underwent pPCI.Conclusions:Elderly patients with AMI underwent pPCI less frequently, but it was consistently associated with better clinical outcome in these patients. Our findings support the proactive application of pPCI for elderly AMI patients when they are eligible for an invasive strategy.

著者

Masaomi Gohbara Kunihiro Nishimura Michikazu Nakai Yoko Sumita Tsutomu Endo Yasushi Matsuzawa Masaaki Konishi Masami Kosuge Toshiaki Ebina Kouichi Tamura Kazuo Kimura

出版者

The Japanese Circulation Society

雑誌

Circulation Reports (ISSN:24340790)

巻号頁・発行日

vol.1, no.1, pp.20-28, 2019-01-10 (Released:2019-01-10)

参考文献数

30

被引用文献数

7

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Background: The aim of this study was to clarify the clinical impact of activities of daily living (ADL) using the Japanese Registry of All Cardiac and Vascular Diseases-Diagnosis Procedure Combination (JROAD-DPC) database. Methods and Results: From April 2012 to March 2014, the JROAD-DPC database included 206,643 patients with acute coronary syndrome (ACS; n=49,784), heart failure (HF; n=136,878), or aortic aneurysm/dissection (Aorta; n=19,981). We divided them into 3 categories with regard to age (low, 20–59 years; middle, 60–79 years; high, ≥80 years) and admission ADL (low, Barthel index [BI] 0–70; middle, BI 75–95; high, BI 100). ACS, HF, and Aorta patients with low ADL had higher in-hospital mortality rates (18.3%, 16.7%, and 33.4%) than those with middle or high ADL (P<0.001, χ2 test). On multivariable analysis, BI on admission was associated with in-hospital mortality of ACS (OR, 0.986 per 1 BI; P<0.001), HF (OR, 0.986 per 1 BI; P<0.001), and Aorta (OR, 0.986 per 1 BI; P<0.001), adjusted for gender, age, body mass index, hypertension, diabetes mellitus, dyslipidemia, and the Charlson comorbidity index. Moreover, patients with low age and low ADL had a higher in-hospital mortality rate than those with high age and high ADL in regard to HF (8.6% vs. 6.0%). Conclusions: According to JROAD-DPC data, assessment of admission ADL is important in patients with cardiovascular disease.