Circulation Reports
Online ISSN : 2434-0790
Current issue
Displaying 1-8 of 8 articles from this issue
Original Articles
Ischemic Heart Disease
  • Mitsukuni Kimura, Tetsuya Matoba, Yasuhiro Nakano, Shunsuke Katsuki, K ...
    Article type: ORIGINAL ARTICLE
    Subject area: Ischemic Heart Disease
    2024 Volume 6 Issue 6 Pages 191-200
    Published: June 10, 2024
    Released on J-STAGE: June 10, 2024
    Advance online publication: May 09, 2024
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    Supplementary material

    Background: Coronavirus disease 2019 (COVID-19) has impacted on cardiovascular disease. However, it remains unclear whether the COVID-19 pandemic has impacted on disease severity and patients’ prognosis of acute myocardial infarction (AMI) in Japan.

    Methods and Results: We retrospectively accumulated data from the Japanese Registry of All Cardiac and Vascular Diseases–Diagnosis Procedure Combination (JROAD-DPC) study (April 2019 to March 2021). Patients were divided into a before COVID-19 pandemic group or a during COVID-19 pandemic group. The proportion of patients who presented with cardiogenic shock (Killip class IV) was compared between groups, in association with 30-day mortality as the primary outcome. Killip class IV AMI significantly increased in the during COVID-19 pandemic group (15.7% vs. 14.5% in the before pandemic group, P<0.0001). The 30-day mortality was higher in the during COVID-19 pandemic group (9.6% vs. 9.2% in the before COVID-19 pandemic group, P=0.049). However, there was no significant difference in the adjusted 30-day mortality in each Killip class between the before and during COVID-19 pandemic groups.

    Conclusions: During the early stage of the COVID-19 pandemic in Japan, 30-day mortality of AMI increased, mainly because of the increase of Killip class IV AMI patients. However, irrespective of the COVID-19 pandemic, the adjusted 30-day mortality of each Killip classification group was unchanged.

Myocardial Disease
  • Yu-ki Nishimura, Junya Komatsu, Hiroki Sugane, Hayato Hosoda, Ryu-ichi ...
    Article type: ORIGINAL ARTICLE
    Subject area: Myocardial Disease
    2024 Volume 6 Issue 6 Pages 201-208
    Published: June 10, 2024
    Released on J-STAGE: June 10, 2024
    Advance online publication: May 25, 2024
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    Background: Takotsubo syndrome (TTS) in male patients is under-studied, particularly in the older population.

    Methods and Results: From 226 patients with TTS, 44 older male patients (prevalence rate: 19.5%, age: median 77 years) were compared with 182 older female patients (prevalence rate: 80.5%, age: median 80 years). Emotional triggers of TTS were less frequent (2% vs. 19%; P=0.007), whereas physical triggers were more frequent (75% vs. 58%; P=0.040) in older men than in women. Among physical triggers, serious respiratory infection was more common in older men than in women. As initial clues to the diagnosis, ECG T-wave inversion was more frequent (48% vs. 29%; P=0.018) and chest pain and/or dyspnea were less common (23% vs. 38%; P=0.050) in older men than in women. In total, 14 patients (6%) had cardiogenic shock and 41 (18%) had severe heart failure as complications, although there were no significant differences in the frequency of these complications between older men and women. Although cardiac death occurred in 3 female patients (1%) and noncardiac death in 3 male and 5 female patients (4%), there were no significant differences in death rate between older men and women.

    Conclusions: Emotional triggers of TTS were extremely infrequent whereas physical triggers were common in older men. Although severe heart failure was common, there were no significant differences in the frequency of complications and in-hospital deaths between older men and women.

Pediatric Cardiology and Adult Congenital Heart Disease
  • Katsura Soma, Ryota Ochiai, Hiroyuki Tsutsui, Norihiko Takeda, Atsushi ...
    Article type: ORIGINAL ARTICLE
    Subject area: Pediatric Cardiology and Adult Congenital Heart Disease
    2024 Volume 6 Issue 6 Pages 209-216
    Published: June 10, 2024
    Released on J-STAGE: June 10, 2024
    Advance online publication: May 15, 2024
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    Supplementary material

    Background: Individuals transitioning into adulthood require age-appropriate medical care and delegation of decision-making authority from their parents to the patients themselves. Although there have been multiple observational and interventional studies on transitional care for patients with congenital heart disease (CHD) in the cardiovascular field, transitional care specific to childhood-onset cardiomyopathy (CM) remains unaddressed.

    Methods and Results: A nationwide questionnaire-based survey was performed in the pediatric cardiology departments of 151 facilities in Japan. Responses were obtained from 100 (66%) facilities with low transfer rates (<5%) for childhood-onset CM cases. The comparison between CHD-transferring and non-CHD-transferring facilities revealed a significantly higher transfer rate (83.9%) for childhood-onset CM cases in the CHD-transferring facilities (P<0.001). Regarding the transition programs, 72 (72%) facilities do not offer any programs for CM, while most (92%) facilities recognize its necessity. Finally, only 19 (19%) facilities provided a transition program, 10 of which were CHD based.

    Conclusions: To the best of our knowledge, this is the first study to demonstrate the poor transition/transfer care status of patients with childhood-onset CM in Japan. The transfer rate of CMs was lower than that of CHDs, and transition programs were less available. Referring to the system established for CHD could help develop a successful transitional care system for CM.

Pulmonary Circulation
  • Kazuhiro Shimizu, Takeshi Sasaki, Shunsuke Todani, Takuro Ito, Masahir ...
    Article type: ORIGINAL ARTICLE
    Subject area: Pulmonary Circulation
    2024 Volume 6 Issue 6 Pages 217-222
    Published: June 10, 2024
    Released on J-STAGE: June 10, 2024
    Advance online publication: May 22, 2024
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    Supplementary material

    Background: Factor Xa inhibitors, such as rivaroxaban, are increasing the convenience of treatment for deep vein thrombosis (DVT). Limited evidence exists regarding clot evaluation at 3 months after treatment for DVT.

    Methods and Results: We retrospectively analyzed the clinical course of symptomatic proximal DVT in patients who received 3 months of anticoagulation treatment at our hospital. Patients treated with the rivaroxaban single-drug approach were classified as group A (n=42). Patients treated with unfractionated heparin (UFH) or subcutaneous fondaparinux followed by vitamin K antagonist comprised group B (n=60) as an historical cohort. The quantitative ultrasound thrombosis (QUT) score was used to quantify clot burden before and after treatment. No significant differences were observed in patient characteristics between the groups. Serum D-dimer levels in both groups significantly improved after treatment. Clot volume assessed using QUT also reduced significantly in both groups. The QUT score in groups A and B improved from 7.5 [4.8, 12.0] to 3.0 [1.8, 5.0; P=0.000] and 7.0 [4.0, 9.8] to 3.0 [2.0, 5.0; P=0.000], respectively. The change in QUT (∆QUT) was significantly greater in group A compared with group B (−4.5 [−8.25, −2.0] vs. −2.0 [−6.0, 0.0]; P=0.005).

    Conclusions: We were able to demonstrate the effectiveness of DVT treatment using rivaroxaban over a period of 3 months from onset, in terms of clot regression evaluated using the QUT score.

Valvular Heart Disease
  • Yuta Kemi, Eiji Yamashita, Kazuomi Kario, Satoshi Kinoshita, Kouta Sug ...
    Article type: ORIGINAL ARTICLE
    Subject area: Valvular Heart Disease
    2024 Volume 6 Issue 6 Pages 223-229
    Published: June 10, 2024
    Released on J-STAGE: June 10, 2024
    Advance online publication: May 22, 2024
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    Background: The prognostic significance of different presentations of aortic stenosis (AS) remains unclear. Our aim was to analyze outcomes after transcatheter aortic valve replacement (TAVR) according to preoperative AS symptoms.

    Methods and Results: We retrospectively enrolled 369 consecutive patients (age 84.3±5.0 years, and 64% females) who underwent TAVR from 2014 to 2021. We divided them into 4 groups by the main preoperative symptom: asymptomatic (n=50), chest pain (n=46), heart failure (HF; n=240), and syncope (n=33). Post-TAVR rates of HF readmission, all-cause death and cardiac death were compared among the 4 groups. The 4 groups showed no significant trends in age, sex, stroke volume index, or echocardiography indices of AS severity. During a follow-up, the overall survival rate at 1 and 5 years after TAVR was 97% and 90% in the asymptomatic group, 96% and 69% in the chest pain group, 93% and 69% in the HF group, and 90% and 72% in the syncope group, respectively. HF and syncope symptom had significantly lower HF readmission or cardiac death-free survival at 5 years after TAVR (log-rank test P=0.038). In the Cox hazard multivariate analysis, preoperative syncope was an independent predictor of future HF readmission or cardiac death after TAVR (HR=9.87; 95% CI 1.67–97.2; P=0.035).

    Conclusions: AS patients with preoperative syncope or HF had worse outcomes after TAVR than those with angina or no symptoms.

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