Details of a Researcher - SHIRAISHI Yasuyuki

Papers - SHIRAISHI Yasuyuki

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Treatment patterns and trajectories in patients after acute heart failure hospitalization

Nakamaru R, Shiraishi Y, Kohno T, Nagatomo Y, Akiyama H, Motoya Y, Fukui M, Yajima T, Yoshikawa T, Kohsaka S

ESC Heart Failure (ESC Heart Failure) 11 ( 2 ) 692 - 701 2023

Research paper (scientific journal), Accepted

Aims: The trajectories of systolic function after admission for acute heart failure (HF) and their effect on clinical outcomes have not been fully elucidated. We aimed to assess changes in left ventricular ejection fraction (LVEF) between the index and 1 year after discharge and to examine their prognostic implications. Methods and results: We extracted data from a prospective multicentre registry of patients hospitalized for acute HF and identified 1636 patients with LVEF data at admission and 1 year after discharge. We categorized them into five groups based on LVEF changes: HF with unchanged-preserved EF [HFunc-pEF (EF ≥ 50%); N = 527, 32.2%], unchanged-mildly reduced EF [HFunc-mrEF (EF 41–49%); N = 86, 5.3%], unchanged-reduced EF [HFunc-rEF (EF ≤ 40%); N = 377, 23.0%], worsened EF (HFworEF; N = 83, 5.1%), and improved EF (HFimpEF; N = 563, 34.4%). We then evaluated the subsequent composite outcome of cardiovascular death and HF readmission. During 1 year after discharge, 53% of patients with HF with reduced EF and 67% of those with HF with mildly reduced EF (HFmrEF) transitioned to other categories, whereas 92% of those with HF with preserved EF (HFpEF) remained within the same category. Patients with HFimpEF were more likely to be younger and had relatively preserved renal function, whereas those with HFworEF were the oldest and had more comorbidities among the five groups. After multivariable adjustment, patients with HFimpEF and HFunc-pEF had a lower risk for composite outcomes when referenced to patients with HFunc-rEF [hazard ratio (95% confidence interval), P-value: 0.28 (0.16–0.49), P < 0.001, and 0.40 (0.25–0.63), P < 0.001, respectively]. Conversely, patients with HFunc-mrEF and HFworEF had a comparable risk [0.44 (0.18–1.07), P = 0.07, and 0.63 (0.29–1.39), P = 0.26, respectively]. Conclusions: A substantial number of patients with HF experienced transitions to other categories after discharge. Notably, patients with decreased EF experienced a worse prognosis, even with slight decreases (e.g. HFpEF transitioning to HFmrEF). These findings emphasize the significance of longitudinal assessments of systolic function to better manage patients following acute decompensation.

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Forecasting the Acute Heart Failure Admissions: Development of Deep Learning Prediction Model Incorporating the Climate Information

Jimba T., Kodera S., Kohsaka S., Otsuka T., Harada K., Shindo A., Shiraishi Y., Kohno T., Takei M., Nakano H., Matsuda J., Yamamoto T., Nagao K., Takayama M.

Journal of Cardiac Failure (Journal of Cardiac Failure) 30 ( 2 ) 404 - 409 2023

ISSN 10719164

Background: Climate is known to influence the incidence of cardiovascular events. However, their prediction with traditional statistical models remains imprecise. Methods and Results: We analyzed 27,799 acute heart failure (AHF) admissions within the Tokyo CCU Network Database from January 2014 to December 2019. High-risk AHF (HR-AHF) day was defined as a day with the upper 10th percentile of AHF admission volume. Deep neural network (DNN) and traditional regression models were developed using the admissions in 2014–2018 and tested in 2019. Explanatory variables included 17 meteorological parameters. Shapley additive explanations were used to evaluate their importance. The median number of incidences of AHF was 12 (9–16) per day in 2014–2018 and 11 (9–15) per day in 2019. The predicted AHF admissions correlated well with the observed numbers (DNN: R2 = 0.413, linear regression: R2 = 0.387). The DNN model was superior in predicting HR-AHF days compared with the logistic regression model [c-statistics: 0.888 (95% CI: 0.818–0.958) vs 0.827 (95% CI: 0.745–0.910): P = .0013]. Notably, the strongest predictive variable was the 7-day moving average of the lowest ambient temperatures. Conclusions: The DNN model had good prediction ability for incident AHF using climate information. Forecasting AHF admissions could be useful for the effective management of AHF.

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Time Trend in Incidence of Sudden Cardiac Death After Percutaneous Coronary Intervention from 2009 to 2017 (from the Japanese Multicenter Registry).

Nakamaru R, Shiraishi Y, Niimi N, Ueda I, Ikemura N, Suzuki M, Noma S, Inohara T, Numasawa Y, Fukuda K, Kohsaka S

The American Journal of Cardiology 188 44 - 51 2022.12

Research paper (scientific journal), Accepted, ISSN 0002-9149

The advances in the integrated management of patients with coronary artery disease undergoing percutaneous coronary intervention (PCI) have reduced subsequent cardiovascular events. Nonetheless, sudden cardiac death (SCD) remains a major concern. Therefore, we aimed to investigate the time trend in SCD incidence after PCI and to identify the clinical factors contributing to SCD. From a prospective, multicenter cohort registry in Japan, 8,723 consecutive patients with coronary artery disease undergoing PCI between 2009 and 2017 were included. We evaluated the SCD incidence 2 years after PCI; all death events were adjudicated, and SCD was defined as unexpected death without a noncardiovascular cause in a previously stable patient within 24 hours from the onset. The Fine and Gray method was used to identify the factors associated with SCD. Overall, the mean age of the patients was 68.3 ± 11.3 years, and 1,173 patients (13.4%) had heart failure (HF). During the study period, the use of second-generation drug-eluting stents increased. The 2-year cumulative incidence of all-cause mortality and SCD was 4.29% and 0.45%, respectively. All-cause mortality remained stable during the study period (p for trend = 0.98), whereas the crude incidence of SCD tended to decrease over the study period (p for trend = 0.052). HF was the strongest predictor associated with the risk of SCD (crude incidence [vs non-HF] 2.13% vs 0.19%; p <0.001). In conclusion, the incidence of SCD after PCI decreased over the last decade, albeit the high incidence of SCD among patients with HF remains concerning.

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Real-time analysis of heart rate variability during aerobic exercise in patients with cardiovascular disease

Ikura H., Katsumata Y., Seki Y., Ryuzaki T., Shiraishi Y., Miura K., Sato K., Fukuda K.

IJC Heart and Vasculature (IJC Heart and Vasculature) 43 101147 2022.12

ISSN 23529067

Background: Exercise therapy for cardiovascular disease (CVD) is mainly evaluated based on the heart rate (HR) or Borg scale. However, these indices can be unreliable depending on the patient's medication or their subjective decisions; thus, alternative methods are required for easier and safer implementation of aerobic exercise. Here, we examined whether real-time analysis of HR variability (HRV) can help maintain exercise intensity at the ventilatory threshold (VT) during exercise. Methods: Twenty-eight patients with CVD treated at Keio University Hospital between August 2018 and March 2020 were enrolled. Initially, oxygen uptake (VO2) and HR at the VT were determined using the cardiopulmonary exercise test. Patients then performed aerobic exercise on a stationary bicycle for 30 min while a parameter of HRV, the high-frequency (HF) component, was monitored in real time using an electrocardiograph. The work rate during exercise was adjusted every 2 min to maintain the HF range between 5 and 10. The VO2 and HR values, recorded every 2 min during exercise, were compared with those at VT. The Bland–Altman method was used to confirm similarity. Results: VO2 and HR during exercise were closely correlated with those at VT (e.g., 19 min after exercise initiation; VO2: r = 0.647, HR: r = 0.534). The Bland–Altman plot revealed no bias between the mean values (e.g., 19 min; VO2: −0.22 mL/kg/min; HR: −0.07/min). Conclusion: Real-time HRV analysis with electrocardiograph alone during exercise can provide continuous and non-invasive exercise intensity measurements at VT, promoting safer and effective exercise strategies.

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Association of Potassium Level at Discharge with Long-Term Mortality in Hospitalized Patients with Heart Failure

Miura Y., Higuchi S., Kohno T., Shiraishi Y., Kitamura M., Nagatomo Y., Takei M., Nakano S., Goda A., Soejima K., Kohsaka S., Yoshikawa T.

Journal of Clinical Medicine (Journal of Clinical Medicine) 11 ( 24 ) 2022.12

ISSN 2077-0383

Dyskalemia (hypokalemia and hyperkalemia) is a common comorbidity of heart failure (HF). Although dyskalemia is associated with poor prognosis, different prognostic impacts of hypo- and hyperkalemia remain vastly unclear. This study investigated the association of dyskalemia with prognosis in HF patients, especially the mode of death and left ventricular ejection fraction (LVEF). The multicenter study included 3398 patients hospitalized for HF. Patients were divided into three groups based on serum potassium levels at discharge: hypokalemia (<3.5 mEq/L; n = 115 (3.4%)), normokalemia (3.5–5.0 mEq/L; n = 2960 (87.1%)), and hyperkalemia (≥5.0 mEq/L; n = 323 (9.5%)). Two-year all-cause, cardiac, and non-cardiac mortality was evaluated. Association of serum potassium with two-year mortality demonstrated a U-shaped curve, with a worse prognosis for patients with hypokalemia. All-cause mortality at two-years did not differ among the three groups. Hypokalemia was associated with 2-year cardiac death (adjusted hazard ratio (HR), 2.60; 95% confidence interval (CI), 1.20–5.64) in HF with reduced ejection fraction (HFrEF; LVEF < 40%), but not in non-HFrEF. Regardless of LVEF, hyperkalemia was not independently associated with any mortality. Hypokalemia was independently associated with cardiac death, particularly in HFrEF patients. Such an association was not observed in hyperkalemia regardless of LVEF.

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画像情報と深層学習を応用した心疾患患者の予後予測

白石泰之

上原記念生命科学財団研究報告集 ((公財)上原記念生命科学財団) 36 1 - 6 2022.12

【日常診療でみる二次性心筋症・全身疾患関連の心障害】高血圧に伴う心筋障害

川久保裕美子, 白石泰之

診断と治療 ((株)診断と治療社) 110 ( 12 ) 1509 - 1514 2022.12

ISSN 0370-999X

<Headline>1 わが国における高血圧症罹患者は成人の半数に達し,治療の重要性が広く認識されているものの,罹患者数の減少(一次予防)や十分な降圧治療(二次予防)につながっていない現状がある.2 高血圧に伴う心筋障害は,左室肥大などの形態学的異常をきたすとともに,不整脈や冠動脈疾患,最終的には心不全の原因となる.3 心機能や合併疾患の状態(多臓器連関)も踏まえて治療戦略を練ることが重要である.(著者抄録)

Cardiovascular vs. non-cardiovascular deaths after heart failure hospitalization in young, older, and very old patients.

Nakamaru R, Shiraishi Y, Sandhu AT, Heidenreich PA, Shoji S, Kohno T, Takei M, Nagatomo Y, Nakano S, Kohsaka S, Yoshikawa T

ESC Heart Failure (ESC Heart Failure) 10 ( 1 ) 673 - 684 2022.11

Research paper (scientific journal), Accepted

Aims: The long-term outcome in patients with heart failure (HF) after hospitalization may vary substantially depending on their age and left ventricular ejection fraction (LVEF). We aimed to assess the relative rates of cardiovascular death (CVD) and non-CVD based on the age and how the rates differ under the updated LVEF classification system. Methods and results: Consecutively registered hospitalized patients with HF (N = 3558; 39.7% women with a mean age of 73.9 ± 13.3 years) were followed for a median of 2 (interquartile range, 0.8–3.1) years. The CVDs and non-CVDs were evaluated based on age [young (<65 years), older (65–84 years), and very old (≥85 years)] and LVEF classification [HF with preserved EF (HFpEF; LVEF ≥50%) and non-HFpEF (LVEF <50%)]. The adverse clinical events were adjudicated independently by a central committee. Overall, 1505 (42.3%) had HFpEF [young: n = 182 (12.1%), older: n = 894 (59.4%), very old: n = 429 (28.5%)], and 2053 (57.7%) had non-HFpEF [young: n = 575 (28.0%), older: n = 1159 (56.5%), very old: n = 319 (15.5%)]. During the follow-up, the crude incidence of all-cause death was higher in non-HFpEF than in HFpEF across all age groups (non-HFpEF vs. HFpEF, young: 10.4% vs. 5.5%, log-rank P = 0.10; older: 26.6% vs. 20.9%, log-rank P = 0.002; very old: 36.7% vs. 31.7%, log-rank P = 0.043). CVDs accounted for more than half of all deaths in non-HFpEF (young 65.0%, older 64.2%, and very old 55.6%), whereas the proportion of CVDs remained less than half in HFpEF (young 50.0%, older 41.2%, very old 38.2%). HF readmission was associated with subsequent all-cause death in non-HFpEF [hazard ratio (HR): 1.72, 95% confidence interval (CI): 1.41–2.09, P < 0.001], but not in HFpEF (HR: 1.12, 95% CI: 0.87–1.43, P = 0.39). Conclusions: The probability of a non-CVD increases in both LVEF categories with advancing age, but that it is greater in the HFpEF category. The findings indicate that mitigating CV-related outcomes alone may be insufficient for treating HF in older population, particularly in the HFpEF category.

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Social Isolation and Implementation of Advanced Care Planning Among Hospitalized Patients With Heart Failure

Kitakata H., Kohno T., Kohsaka S., Fujisawa D., Nakano N., Sekine O., Shiraishi Y., Kishino Y., Katsumata Y., Yuasa S., Fukuda K.

Journal of the American Heart Association (Journal of the American Heart Association) 11 ( 21 ) e026645 2022.11

Background The implementation of advance care planning (ACP) in heart failure management is insufficient. Social isolation (SI) could be a barrier to ACP initiation, albeit the relationship between SI and patients' preference for ACP or end-of-life care remains unknown. Methods and Results We conducted a questionnaire survey, including assessments of SI using the 6-item Lubben Social Network Scale as well as patients' perspectives on ACP and end-of-life care. Of the 160 patients approached by our multidisciplinary heart failure team during admission, 120 patients (75.0%) completed the survey (median age, 73.0 years; men, 74.2%). A Cox proportional hazard model was constructed to elucidate the short-term (180-day) prognostic impact of SI. Overall, 28.3% of participants were at high risk for SI (6-item Lubben Social Network Scale score <12). High-risk patients had more negative attitudes toward ACP than those without (61.8% versus 80.2%; P=0.035). The actual performance of ACP conversation in patients with and without high risk were 20.6% and 30.2%, respectively. Regarding preference in end-of-life care, "Saying what one wants to tell loved ones" (73.5% versus 90.6%; P=0.016) and "Spending enough time with family" (58.8% versus 77.9%; P=0.035) were less important in high-risk patients. High risk for SI was associated with higher 180-day risk-adjusted all-cause mortality (hazard ratio, 7.89 [95% CI, 1.53-40.75]). Conclusions In hospitalized patients with heart failure, high risk for SI was frequently observed. High-risk patients were associated with a negative attitude toward ACP, despite higher mortality. Further research is required to establish an ideal approach to provide ACP in socially vulnerable patients.

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【避けて通れない心不全診療-総合内科力・循環器力を鍛えよう!】心不全総論　患者中心の心不全診療を目指して　予後予測モデルの上手な使い方

白石泰之

Medicina ((株)医学書院) 59 ( 12 ) 2118 - 2122 2022.11

ISSN 0025-7699

＜文献概要＞Point　◎「治癒でなく,病気とともに生きる」ことが前提のなかで,「患者中心の心不全診療」の意義はきわめて大きい.◎最適な治療方針の決定のために,患者・家族と予後情報まで含めた質の高いshared decision making(SDM)が必要である.◎心不全においては,医療者や患者自身の「主観的な」予後予測の信頼性は一般的に低く,リスクモデルによる「客観的な」予後予測が有用である.◎心不全患者に予後情報を伝えるときは,心不全の病の軌跡を考慮して,ある程度の幅をもたせて伝えるべきである.

Low blood pressure and guideline-directed medical therapy in patients with heart failure with reduced ejection fraction.

Izumi K, Kohno T, Goda A, Takeuchi S, Shiraishi Y, Saji M, Nagatomo Y, Tanaka TD, Takei M, Nakano S, Soejima K, Kohsaka S, Yoshikawa T, West Tokyo Heart Failure Registry Investigators.

International journal of cardiology (International Journal of Cardiology) 370 255 - 262 2022.10

ISSN 0167-5273

Background: Patients with heart failure (HF) presenting with low blood pressure (BP) have been underrepresented in large-scale clinical trials. We investigated the characteristics and implementation of conventional guideline-directed medical therapy (GDMT; renin-angiotensin system inhibitors and β-blockers) in patients with low BP hospitalized for HF with systolic dysfunction. Methods: Conventional GDMT was evaluated by discharge BP among 2043 consecutive patients with HF and left ventricular ejection fraction (LVEF) < 50% in the WET-HF registry. Among the 708 (34.7%) patients with lower discharge BP (≤ 100 mmHg; the lower tertiles), exploratory subgroups included patients with previous HF hospitalization, inotrope use, New York Heart Association (NYHA) III–IV class, and lower estimated glomerular filtration rate (eGFR) and LVEF (lower than median value). We evaluated the risk-adjusted association between GDMT implementation and 2-year adverse events (all-cause mortality or HF rehospitalization). Results: Among the 2043 patients (age 74 [63–82] years), the median systolic BP was 108 (98–120) mmHg. Among patients with lower BP, GDMT prescription rate was 62.7%, and GDMT use was associated with decreased adverse events (HR:0.74, 95%CI:0.58–0.94). GDMT prescription rates were lower among higher-NYHA class and lower-eGFR subgroups compared with their reference subgroups, and directionally similar outcomes were noted in all subgroups (favoring GDMT use); however, this association was somewhat attenuated in the lower-eGFR group (HR:0.87, 95%CI:0.64–1.17). Conclusions: Conventional GDMT use was associated with decreased adverse outcomes in most patients with HF compounded by systolic dysfunction and low BP, albeit caution is warranted in patients with renal dysfunction.

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Malnutrition in real-world patients hospitalized for heart failure with preserved ejection fraction and its potential impact on generalizability of EMPEROR-Preserved trial.

Takeuchi S, Kohno T, Goda A, Shiraishi Y, Saji M, Nagatomo Y, Tanaka TD, Takei M, Nakano S, Soejima K, Kohsaka S, Yoshikawa T, West Tokyo Heart Failure Registry Investigators.

International journal of cardiology (International Journal of Cardiology) 370 263 - 270 2022.10

ISSN 0167-5273

Background: Despite the benefits of the sodium-glucose cotransporter 2 inhibitor (SGLT2i) empagliflozin, its suitability for patients with heart failure (HF) in the real-world setting remains unclear. Considering the unique pharmacological profile of SGLT2i (e.g., glucose excretion leading to calorie loss) and increasingly aging patients with HF, applicability of trials' finding in patients with malnutrition is important. Methods: We examined 1633 consecutive patients with a preserved left ventricular ejection fraction (LVEF; >40%) enrolled in a multicenter-based acute HF registry. After applying the EMPEROR-Preserved eligibility criteria, we compared the baseline characteristics of trial-eligible and actual trial participants, and patients with and without malnutrition among the trial-eligible group. Malnutrition was assessed by the geriatric nutritional risk index (GNRI). The trial-eligible patients were divided into high (GNRI≥92) and low (GNRI<92) nutritional groups, and a composite endpoint comprising all-cause death and HF rehospitalization was evaluated. Results: Majority (70.2%) of the analyzed patients were eligible for the EMPEROR-Preserved trial (age: 77 ± 12 years and body mass index [BMI]: 22.0 ± 4.1 kg/m2), but were older and had lower BMIs than the actual trial participants. Notably, 51.9% of the eligible patients were at high risk for malnutrition and had a higher rate of the composite endpoint than non-malnourished counterparts (HR 1.27, 95%CI 1.04–1.56, P = 0.020). The difference in outcomes was predominantly due to mortality from non-cardiac causes. Conclusions: Mostly patients with HF in a real-world setting met the EMPEROR-Preserved criteria; however, approximately half were at high risk for malnutrition with poorer outcomes owing to non-cardiac-related causes.

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Confidence in self-care after heart failure hospitalization.

Hashimoto S, Kitakata H, Kohsaka S, Fujisawa D, Shiraishi Y, Nakano N, Sekine O, Kishino Y, Katsumata Y, Yuasa S, Fukuda K, Kohno T

Journal of cardiology (Journal of Cardiology) 81 ( 1 ) 42 - 48 2022.10

ISSN 0914-5087

Background: Understanding patient perspectives of self-care is critical for improving multidisciplinary education programs and adherence to such programs. However, perspectives of self-care for patients with heart failure (HF) as well as the association between patient perspectives and patient-physician communication remain unclear. Methods: Confidence levels regarding self-care behaviors (eight lifestyle behaviors and four consulting behaviors) and self-monitoring were assessed using a self-administered questionnaire survey, which was directly distributed by dedicated physicians and nurses to consecutive patients hospitalized with HF in a tertiary-level hospital. Patient-physician communication was evaluated according to the quality of physician-provided information regarding “treatment and treatment choices” and “prognosis” using the Prognosis and Treatment Perception Questionnaire. Out of 202 patients, 187 (92.6 %) agreed to participate, and 176 completed the survey [valid response rate, 87.1 %; male, 67.0 %; median age, 73 (63–81) years]. Multivariate logistic regression analyses were conducted to predict low confidence in self-care (score in the lowest quartile). Results: High confidence (confident or completely confident >75 % of patients) was observed for all self-care behavior categories except low-salt diet (63.1 %), regular exercise (63.1 %), and flu vaccination (65.9 %). Lower confidence in self-care behavior was associated with low quality of patient-physician communication. With regard to self-monitoring, 62.5 % of patients were not confident in distinguishing worsening symptoms of HF from other diseases; non-confidence was also associated with low quality of patient-physician communication. Conclusions: Hospitalized patients with HF had low confidence regarding regular exercise, salt restriction, and flu vaccination. The results also suggest patient-physician communication affects patient confidence.

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Association between class of foundational medication for heart failure and prognosis in heart failure with reduced/mildly reduced ejection fraction.

Ito M, Maeda D, Matsue Y, Shiraishi Y, Dotare T, Sunayama T, Nogi K, Takei M, Ueda T, Nogi M, Ishihara S, Nakada Y, Kawakami R, Kagiyama N, Kitai T, Oishi S, Akiyama E, Suzuki S, Yamamoto M, Kida K, Okumura T, Nagatomo Y, Kohno T, Nakano S, Kohsaka S, Yoshikawa T, Saito Y, Minamino T

Scientific reports (Scientific Reports) 12 ( 1 ) 16611 2022.10

We clarified the association between changes in the number of foundational medications for heart failure (FMHF) during hospitalization for worsening heart failure (HF) and post-discharge prognosis. We retrospectively analyzed a combined dataset from three large-scale registries of hospitalized patients with HF in Japan (NARA-HF, WET-HF, and REALITY-AHF) and patients diagnosed with HF with reduced or mildly reduced left ventricular ejection fraction (HFr/mrEF) before admission. Patients were stratified by changes in the number of prescribed FMHF classes from admission to discharge: angiotensin-converting enzyme inhibitors or angiotensin receptor blockers, beta-blockers, and mineralocorticoid receptor blockers. Primary endpoint was the combined endpoint of HF rehospitalization and all-cause death within 1 year of discharge. The cohort comprised 1113 patients, and 482 combined endpoints were observed. Overall, FMHF prescriptions increased in 413 (37.1%) patients (increased group), remained unchanged in 607 (54.5%) (unchanged group), and decreased in 93 (8.4%) (decreased group) at discharge compared with that during admission. In the multivariable analysis, the increased group had a significantly lower incidence of the primary endpoint than the unchanged group (hazard ratio 0.56, 95% confidence interval 0.45–0.60; P < 0.001). In conclusion, increase in FMHF classes during HF hospitalization is associated with a better prognosis in patients with HFr/mrEF.

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【エキスパートがお答えします!日常臨床のあるあるの疑問】(第1章)循環器　新しい心不全治療薬が次々と登場していますが,心不全のどのステージから使用するべきでしょうか?

白石泰之

内科 ((株)南江堂) 130 ( 3 ) 342 - 344 2022.09

ISSN 0022-1961

Divergent effect of blood glucose dysregulation on long-term clinical outcome in acute decompensated heart failure: A reappraisal in contemporary practice.

Chishiki T, Nagatomo Y, Saji M, Takei M, Goda A, Kohno T, Nakano S, Nishihata Y, Ikegami Y, Shiraishi Y, Kohsaka S, Adachi T, Yoshikawa T, for WET-HF Investigators.

International journal of cardiology (International Journal of Cardiology) 365 91 - 99 2022.07

ISSN 0167-5273

Background: The prognostic implication of elevated or decreased blood glucose (BG) level in acute decompensated heart failure (ADHF) has been still controversial. Indices of stress hyperglycemia, expressed by the ratio of BG and chronic BG control, has been reported to be associated with poor outcome in different disease population. We sought to assess BG at admission and %ΔBG, an index of BG deviation from estimated average BG calculated from glycated hemoglobin (HbA1c), on the long-term outcome in ADHF patients. Methods and results: The West Tokyo Heart Failure (WET-HF) Registry is a prospective multicenter registry enrolling consecutive hospitalized ADHF patients. Among the patients (N = 3078, 77 [67–84] years, male 59%), BG at admission discriminated the long-term (1000 days) incidence of ADHF rehospitalization, but not cardiac death. BG at admission showed a U-shape relationship with the long-term incidence of ADHF rehospitalization after adjustment for covariates. Especially, in patients with HbA1c ≥ 6.5%, the lowest quartile showed the highest risk of ADHF rehospitalization. On the contrary, %ΔBG showed U-shape relationship with the long-term incidence of cardiac death after discharge, rather than ADHF rehospitalization after adjustment for covariates. In addition, elevated %ΔBG was associated with the long-term risk of sudden cardiac death (SCD) even after adjustment for covariates. Conclusions: For ADHF patients, BG at admission and %ΔBG might be a simple, useful tool for predicting and stratifying long-term risk of cardiac events. Especially, elevated %ΔBG might be an important in predicting hard events such as cardiac death or SCD.

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Use of short-acting vs. long-acting loop diuretics after heart failure hospitalization

Imaeda S, Shiraishi Y, Kohsaka S, Niimi N, Goda A, Nagatomo Y, Takei M, Saji M, Nakano S, Kohno T, Fukuda K, Yoshikawa T

ESC Heart Failure (ESC Heart Failure) 9 ( 5 ) 2967 - 2977 2022.06

Research paper (scientific journal), Lead author, Accepted

Aims: Furosemide, a short-acting loop diuretic (SD), is the dominant agent prescribed for heart failure (HF) in clinical practice. However, accumulating data suggests that long-acting loop diuretics (LD), such as torsemide or azosemide, might have more favourable pharmacological profiles. This study aimed to investigate the relationship between the type of loop diuretics and long-term outcomes among patients hospitalized for acute HF enrolled in a contemporary multicentre registry. Methods and results: Within the West Tokyo Heart Failure Registry from 2006 to 2017, a total of 2680 patients (60.1% men with a median age of 77 years) were analysed. The patients were characterized by the type of diuretics used at the time of discharge; 2073 (77.4%) used SD, and 607 (22.6%) used LD. The primary endpoint was composite of all-cause death or HF re-admission after discharge, and the secondary endpoints were all-cause death and HF re-admission, respectively. During the median follow-up period of 2.1 years, 639 patients died [n = 519 (25.0%) in the SD group; n = 120 (19.8%) in the LD group], and 868 patients were readmitted for HF [n = 697 (33.6%) in the SD group; n = 171 (28.2%) in the LD group]. After multivariable adjustment, the LD group had lower risk for the composite outcome [hazard ratio (HR), 0.80; 95% confidence interval (CI), 0.66–0.96; P = 0.017], including all-cause death (HR; 0.73; 95% CI; 0.54–0.99; P = 0.044) and HF re-admission (HR, 0.81; 95% CI, 0.66–0.99; P = 0.038), than the SD group. Propensity score matching yielded estimates that were consistent with those of the multivariable analyses, with sub-group analyses demonstrating that use of LD was associated with favourable outcomes predominantly in younger patients with reduced ejection fraction. Conclusions: LD was associated with lower risk of long-term outcomes in patients with HF and a recent episode of acute decompensation.

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Association of ambient temperature and acute heart failure with preserved and reduced ejection fraction.

Jimba T, Kohsaka S, Yamasaki M, Otsuka T, Harada K, Shiraishi Y, Koba S, Takei M, Kohno T, Matsushita K, Miyazaki T, Kodera S, Tsukamoto S, Iida K, Shindo A, Kitano D, Yamamoto T, Nagao K, Takayama M, Tokyo CCU Network Scientific Committee.

ESC heart failure (ESC Heart Failure) 9 ( 5 ) 2899 - 2908 2022.06

Aims: Evidence on the association between ambient temperature and the onset of acute heart failure (AHF) is scarce and mixed. We sought to investigate the incidence of AHF admissions based on ambient temperature change, with particular interest in detecting the difference between AHF with preserved (HFpEF), mildly reduced (HFmrEF), and reduced ejection fraction (HFrEF). Methods and results: Individualized AHF admission data from January 2015 to December 2016 were obtained from a multicentre registry (Tokyo CCU Network Database). The primary event was the daily number of admissions. A linear regression model, using the lowest ambient temperature as the explanatory variable, was selected for the best-estimate model. We also applied the cubic spline model using five knots according to the percentiles of the distribution of the lowest ambient temperature. We divided the entire population into HFpEF + HFmrEF and HFrEF for comparison. In addition, the in-hospital treatment and mortality rates were obtained according to the interquartile ranges (IQRs) of the lowest ambient temperature (IQR1 <5.5°C; IQR25.5–13.3°C; IQR3 13.3–19.7°C; and IQR4 >19.7°C). The number of admissions for HFpEF, HFmrEF and HFrEF were 2736 (36%), 1539 (20%), and 3354 (44%), respectively. The lowest ambient temperature on the admission day was inversely correlated with the admission frequency for both HFpEF + HFmrEF and HFrEF patients, with a stronger correlation in patients with HFpEF + HFmrEF (R2 = 0.25 vs. 0.05, P < 0.001). In the sensitivity analysis, the decrease in the ambient temperature was associated with the greatest incremental increases in HFpEF, followed by HFmrEF and HFrEF patients (3.5% vs. 2.8% vs. 1.5% per −1°C, P < 0.001), with marked increase in admissions of hypertensive patients (systolic blood pressure >140 mmHg vs. 140–100 mmHg vs. <100 mmHg, 3.0% vs. 2.0% vs. 0.8% per −1°C, P for interaction <0.001). A mediator analysis indicated the presence of the mediator effect of systolic blood pressure. The in-hospital mortality rate (7.5%) did not significantly change according to ambient temperature (P = 0.62). Conclusions: Lower ambient temperature was associated with higher frequency of AHF admissions, and the effect was more pronounced in HFpEF and HFmrEF patients than in those with HFrEF.

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Catheter ablation for patients with atrial fibrillation and heart failure with reduced and preserved ejection fraction: insights from the KiCS-AF multicentre cohort study

Shiraishi Y, Kohsaka S, Ikemura N, Kimura T, Katsumata Y, Tanimoto K, Suzuki M, Ueda I, Fukuda K, Takatsuki S

EP Europace : Journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology 25 ( 1 ) 83 - 91 2022.06

Research paper (scientific journal), Lead author, Accepted, ISSN 1099-5129

Aims: The usefulness of catheter ablation (CA) for atrial fibrillation (AF) across a broad spectrum of heart failure (HF) patients remains to be established. We assessed the association of CA with both health-related quality of life (QoL) and cardiovascular events among HF patients with reduced and preserved left ventricular ejection fraction (LVEF) in an 'all-comer' outpatient-based AF registry.

Methods and results: Of 3303 patients with AF consecutively enrolled in a retrospective multicentre registry that mandated the Atrial Fibrillation Effect on QualiTy-of-life (AFEQT) questionnaire at registration and 1-year follow-up, we extracted data from 530 patients complicating clinical HF. The association between CA and both 1-year change in AFEQT Overall Summary (AFEQT-OS) scores and 2-year composite clinical outcomes (including all-cause death, stroke, and HF hospitalization) was assessed by multivariable analyses. The median duration of AF was 108 days (52-218 days), and 83.4% had LVEF >35%. Overall, 75 patients (14.2%) underwent CA for AF within 1-year after registration. At 1-year follow-up, 67.2% in the ablation group showed clinically meaningful improvements of ≥ 5 points in AFEQT-OS score than 47.8% in the non-ablation group {adjusted odds ratio, 2.03 [95% confidence interval (CI): 1.13-3.64], P = 0.017}. Furthermore, the composite endpoint of all-cause death, stroke, and HF hospitalization occurred less frequently in the ablation group than the non-ablation group [adjusted hazard ratio, 0.27 (95% CI: 0.09-0.86), P = 0.027].

Conclusion: Among AF-HF patients, CA was associated with improved QoL and lower risk of cardiovascular events against drug therapy alone, even for patients with mildly reduced and preserved LVEF.

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Potential association with malnutrition and allocation of combination medical therapies in hospitalized heart failure patients with reduced ejection fraction.

Kawakubo Y, Shiraishi Y, Kohsaka S, Kohno T, Goda A, Nagatomo Y, Nishihata Y, Saji M, Takei M, Ikegami Y, Niimi N, Sandhu ATS, Nakano S, Yoshikawa T, Fukuda K, West Tokyo Heart Failure Registry.

Scientific Reports 12 ( 1 ) 8318 2022.05

Research paper (scientific journal), Accepted

Malnutrition is common in patients with heart failure with reduced ejection fraction (HFrEF) and may influence the long-term prognosis and allocation of combination medical therapy. We reviewed 1231 consecutive patient-level records from a multicenter Japanese registry of hospitalized HFrEF patients. Nutritional status was assessed using geriatric nutritional risk index (GNRI). Combination medical therapy were categorized based on the use of beta-blockers, renin-angiotensin system inhibitors, and mineralocorticoid receptor antagonists. The composite outcome of all-cause death and HF rehospitalization was assessed. The mean age was 72.0 ± 14.2 years and 42.6% patients were malnourished (GNRI < 92). At discharge, 43.6% and 33.4% of patients were receiving two and three agents, respectively. Malnourished patients had lower rates of combination medical therapy use. The standardized GNRI score was independently associated with the occurrence of adverse events (hazard ratio [HR]: 0.88, 95% confidence interval [CI] 0.79–0.98). Regardless of the GNRI score, referenced to patients receiving single agent, risk of adverse events were lower with those receiving three (HR: 0.70, 95% CI 0.55–0.91) or two agents (HR: 0.70, 95% CI 0.56–0.89). Malnutrition assessed by GNRI score predicts long-term adverse outcomes among hospitalized HFrEF patients. However, its prognosis may be modified with combination medical therapy.

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