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Featured researches published by Masafumi Tsurumi.


Journal of Cardiology | 2014

New scoring system (APACHE-HF) for predicting adverse outcomes in patients with acute heart failure: Evaluation of the APACHE II and Modified APACHE II scoring systems

Hirotake Okazaki; Akihiro Shirakabe; Noritake Hata; Masanori Yamamoto; Nobuaki Kobayashi; Takuro Shinada; Kazunori Tomita; Masafumi Tsurumi; Masato Matsushita; Yoshiya Yamamoto; Shinya Yokoyama; Kuniya Asai; Wataru Shimizu

BACKGROUND No scoring system for assessing acute heart failure (AHF) has been reported. METHODS AND RESULTS Data for 824 AHF patients were analyzed. The subjects were divided into an alive (n=750) and a dead group (n=74). We constructed a predictive scoring system based on eight significant APACHE II factors in the alive group [mean arterial pressure (MAP), pulse, sodium, potassium, hematocrit, creatinine, age, and Glasgow Coma Scale (GCS); giving each one point], defined as the APACHE-HF score. The patients were assigned to five groups by the APACHE-HF score [Group 1: point 0 (n=70), Group 2: points 1 and 2 (n=343), Group 3: points 3 and 4 (n=294), Group 4: points 5 and 6 (n=106), and Group 5: points 7 and 8 (n=11)]. A higher optimal balance was observed in the APACHE-HF between sensitivity and specificity [87.8%, 63.9%; area under the curve (AUC)=0.779] at 2.5 points than in the APACHE II (47.3%, 67.3%; AUC=0.558) at 17.5 points. The multivariate Cox regression model identified belonging to Group 5 [hazard ratio (HR): 7.764, 95% confidence interval (CI) 1.586-38.009], Group 4 (HR: 6.903, 95%CI 1.940-24.568) or Group 3 (HR: 5.335, 95%CI 1.582-17.994) to be an independent predictor of 3-year mortality. The Kaplan-Meier curves revealed a poorer prognosis, including all-cause death and HF events (death, readmission-HF), in Group 5 and Group 4 than in the other groups, in Group 3 than in Group 2 or Group 1, and in Group 2 than in Group 1. CONCLUSIONS The new scoring system including MAP, pulse, sodium, potassium, hematocrit, creatinine, age, and GCS (APACHE-HF) can be used to predict adverse outcomes of AHF.


Journal of Cardiology | 2012

Clinical significance of acid-base balance in an emergency setting in patients with acute heart failure.

Akihiro Shirakabe; Noritake Hata; Nobuaki Kobayashi; Takuro Shinada; Kazunori Tomita; Masafumi Tsurumi; Masato Matsushita; Hirotake Okazaki; Yoshiya Yamamoto; Shinya Yokoyama; Kuniya Asai; Kyoichi Mizuno

BACKGROUND AND PURPOSE The role of an arterial blood gas analysis in acute heart failure (AHF) remains unclear. The acid-base balance could help to treat AHF, and it might help to distinguish different types of AHF, while it might be associated with the AHF prognosis. The present study was conducted to determine the relationship between the arterial blood gas sample at the time of hospital admission and clinical findings on admission, outcomes. METHODS AND RESULTS Six hundred twenty-one patients with AHF admitted to the intensive care unit were analyzed. Patients were assigned to an alkalosis group (n=99, pH>7.45), normal group (n=178, 7.35≤ pH≤ 7.45), and acidosis group (n=344, pH<7.35). The clinical findings on admission and outcomes (in-hospital mortality and any-cause death within 2 years) were compared between the three groups. The white blood cell counts (WBC), serum levels of total protein, albumin, and glucose were significantly lower, and the serum levels of C-reactive protein (CRP) and total bilirubin were significantly higher in the alkalosis group. Patients with orthopnea were significantly fewer, and the systolic blood pressure (SBP) and heart rate (HR) were significantly lower in the alkalosis group. The results of a multivariate logistic regression model for in-hospital mortality found that alkalosis was an independent risk factor (p=0.017, odds ratio: 2.589; 95% confidence interval: 1.186-5.648). The Kaplan-Meier curves showed the prognosis for any-cause death to be significantly poorer in the alkalosis group than in the normal group (p=0.026). CONCLUSIONS The factors associated with alkalosis AHF were high CRP, bilirubin, and low WBC, glucose, total protein, and albumin. The patients with alkalosis AHF were less likely to have orthopnea with low SBP and HR. They suggested that the patients with alkalosis AHF might have experienced AHF for a few days and were associated with high mortality.


Journal of Cardiology | 2012

Immediate administration of atorvastatin decreased the serum MMP-2 level and improved the prognosis for acute heart failure

Akihiro Shirakabe; Kuniya Asai; Noritake Hata; Shinya Yokoyama; Takuro Shinada; Nobuaki Kobayashi; Kazunori Tomita; Masafumi Tsurumi; Masato Matsushita; Kyoichi Mizuno

BACKGROUND AND PURPOSE We have reported that matrix metalloproteinase-2 (MMP-2) increased in acute heart failure (AHF) and better prognosis was found in patients with greater reduction in MMP-2. We assessed whether a statin decreased MMP-2 in AHF. METHODS AND RESULTS The serum MMP-2 levels were measured on admission (Day 1), Day 3, Day 7, and Day 14 in 50 AHF patients. The patients were randomized to either atorvastatin (n=25) or control group (n=25). Atorvastatin (10-20mg/day) was started within 12h after their admission and then was continued for two weeks. There were no differences in the serum levels of MMP-2 on Day 1 between atorvastatin group (1400.4±318.6ng/ml) and control group (1292.7±384.7ng/ml). MMP-2 significantly decreased in both groups on Day 3, 7, and 14. However, the MMP-2 value on Day 3 compared to Day 1 was observed to have decreased significantly in atorvastatin group (561.8±235.1ng/ml) compared to control group (272.6±270.6ng/ml; p=0.001). HF events which were defined as death from HF, readmission to hospital for HF, or prolonged hospital stay because of uncontrollable HF, occurred more in control group than in atorvastatin group. Kaplan-Meier curves showed that the prognosis of HF was significantly better in atorvastatin group as compared with control group (log-rank test, p=0.037). CONCLUSION In addition to conventional HF therapy, an early start of atorvastatin caused a great decrease in MMP-2 and also improved HF events in AHF.


Circulation | 2014

Serum Heart-Type Fatty Acid-Binding Protein Level Can Be Used to Detect Acute Kidney Injury on Admission and Predict an Adverse Outcome in Patients With Acute Heart Failure

Akihiro Shirakabe; Noritake Hata; Nobuaki Kobayashi; Hirotake Okazaki; Takuro Shinada; Kazunori Tomita; Masanori Yamamoto; Masafumi Tsurumi; Masato Matsushita; Yoshiya Yamamoto; Shinya Yokoyama; Kuniya Asai; Wataru Shimizu

BACKGROUND Different mechanisms of acute kidney injury (AKI) may exist for acute heart failure (AHF) patients compared with other patients. METHODS AND RESULTS We analyzed data from 282 patients with AHF. The biomarkers were measured within 30 min of admission. Patients were assigned to a no-AKI (n=213) or AKI group (Class R (n=49), Class I (n=15) or Class F (n=5)) using the RIFLE classifications on admission. We evaluated the relationships between the biomarkers and AKI, in-hospital mortality, all-cause death and HF events (HF re-admission, all-cause death) within 90 days. The serum heart-type fatty acid-binding protein (s-HFABP) levels were significantly higher in the AKI than in the no-AKI group, and the predictive biomarker for AKI was s-HFABP (odds ratio: 6.709; 95% confidence interval: 3.362-13.391). s-HFABP demonstrated an optimal balance between sensitivity and specificity (71.0%, 79.3%; area under the receiver-operating characteristic curve [AUC]=0.790) at 22.8 ng/ml for AKI, at 22.8 ng/ml for Class I/F (90.0%, 71.4%; AUC=0.836) and at 21.0 ng/ml for in-hospital mortality (74.3%, 70.0%; AUC=0.726). The Kaplan-Meier survival curves showed a significantly poorer prognosis in the high s-HFABP group (≥22.9 ng/ml) than in other groups. CONCLUSIONS The s-HFABP level can indicate AKI on admission, and a high s-HFABP level is associated with a poorer prognosis for AHF patients.


Journal of Cardiology | 2013

Association between the visiting time and the clinical findings on admission in patients with acute heart failure

Masato Matsushita; Akihiro Shirakabe; Noritake Hata; Takuro Shinada; Nobuaki Kobayashi; Kazunori Tomita; Masafumi Tsurumi; Tetsuro Shimura; Hirotake Okazaki; Yoshiya Yamamoto; Shinya Yokoyama; Kuniya Asai; Kyoichi Mizuno

BACKGROUND There have been few reports about the clinical significance of the time of admission for acute heart failure (AHF). METHODS Five hundred thirty-one patients with AHF admitted to the intensive care unit (ICU) were analyzed. The patients were assigned to either the daytime HF group (n=195, visited from 08:00 to 20:00, Group D) or nighttime HF group (n=336, visited from 20:00 to 08:00, Group N). The clinical findings and outcomes were compared between these groups. RESULTS The systolic blood pressure (SBP), the number of patients with clinical scenario (CS) 1, and the heart rate (HR) were significantly higher in group N (SBP, 171.0±38.9mmHg; CS 1, 80.9%; HR, 116.9±28.0beats/min) than in group D (SBP, 154.2±37.1mmHg; CS 1, 66.2%; HR, 108.6±31.4beats/min). The patients in group N were more likely to have orthopnea (91.1%) than those in group D (70.3%). A multivariate logistic regression model identified a SBP ≥164mmHg [odds ratio (OR): 2.043; 95% confidence interval (CI): 1.383-3.109], HR ≥114beats/min (OR: 1.490; 95%CI: 1.001-2.218), and orthopnea (OR: 2.257; 95%CI: 1.377-3.701) to be independently associated with Group N. The length of ICU stay was shorter in group N (5.8±10.5 days) than in group D (7.8±11.5 days). CONCLUSION The nighttime HF was characterized by high SBP, high HR, and orthopnea, and the length of ICU stay was shorter in the nighttime HF group.


The Cardiology | 2018

Features and Outcomes of Patients with Calcified Nodules at Culprit Lesions of Acute Coronary Syndrome: An Optical Coherence Tomography Study

Nobuaki Kobayashi; Masamichi Takano; Masafumi Tsurumi; Yusaku Shibata; Suguru Nishigoori; Saori Uchiyama; Hirotake Okazaki; Akihiro Shirakabe; Yoshihiko Seino; Noritake Hata; Wataru Shimizu

Objectives: We sought to clarify clinical features and outcomes related to calcified nodules (CN) compared with plaque rupture (PR) and plaque erosion (PE) detected by optical coherence tomography (OCT) at the culprit lesions in patients with acute coronary syndrome (ACS). Methods: Based on OCT findings for culprit lesion plaque morphologies, ACS patients with analyzable OCT images (n = 362) were classified as CN, PR, PE, and other. Results: The prevalence of CN, PR, and PE was 6% (n = 21), 45% (n = 163), and 41% (n = 149), respectively. Patients with CN were older (median 71 vs. 65 years, p = 0.03) and more diabetic (71 vs. 35%, p = 0.002) than those without CN. In OCT findings, the distal reference lumen cross-sectional area (median 4.2 vs. 5.2 mm2, p = 0.048) and the postintervention minimum lumen cross-sectional area (median 4.5 vs. 5.3 mm2, p = 0.04) were smaller in lesions with CN than in those without. Kaplan-Meier estimate survival curves showed that the 500-day survival without target lesion revascularization (TLR) was lower (p = 0.011) for patients with CN (72.9%) than for those with PR (89.3%) or PE (94.8%). Conclusions: ACS patients with CN at the culprit lesion had more TLR compared to those with PR or PE.


The Cardiology | 2016

Matrix Metalloproteinase-9 as a Marker for Plaque Rupture and a Predictor of Adverse Clinical Outcome in Patients with Acute Coronary Syndrome: An Optical Coherence Tomography Study

Nobuaki Kobayashi; Masamichi Takano; Noritake Hata; Noriaki Kume; Masafumi Tsurumi; Akihiro Shirakabe; Hirotake Okazaki; Junsuke Shibuya; Reiko Shiomura; Suguru Nishigoori; Yoshihiko Seino; Wataru Shimizu

Objectives: The present study sought to clarify the relationship between matrix metalloproteinase-9 (MMP-9) levels and plaque morphology demonstrated by optical coherence tomography (OCT), and to examine their prognostic impacts in patients with acute coronary syndrome (ACS). Methods: MMP-9 levels were measured for patients with ACS (n = 249). Among 249 patients, 120 with evaluable OCT images were categorized into patients with ruptured plaques (n = 65) and those with nonruptured plaques (n = 55) on the basis of culprit lesion plaque morphology demonstrated by OCT. Results: MMP-9 levels on admission were significantly higher in the rupture group than in the nonrupture group (p = 0.029). Although creatine kinase-MB (CK-MB) on admission was comparable between the groups, peak CK-MB was higher in the rupture group than in the nonrupture group (p < 0.001). By receiver operating characteristic curve analysis, the optimal cut-off value of MMP-9 to detect ruptured plaques was 65.5 ng/ml (p = 0.029). There was a nonstatistically significant trend toward increased cardiac death at 2 years (5.9 vs. 1.0%, p = 0.059) in patients with high MMP-9 (≥65.5 ng/ml) compared to those with low MMP-9 (<65.5 ng/ml). Conclusions: MMP-9 can differentiate ACS with ruptured plaques from nonruptured plaques, and MMP-9 may be a valuable predictor of long-term cardiac mortality in patients with ACS reflecting plaque rupture.


Heart and Vessels | 2016

Preventable effects of bare-metal stent on restenosis after everolimus-eluting stent deployment

Akihiro Shirakabe; Masamichi Takano; Masanori Yamamoto; Osamu Kurihara; Nobuaki Kobayashi; Masato Matsushita; Masafumi Tsurumi; Hirotake Okazaki; Noritake Hata; Wataru Shimizu

This case report describes a patient who underwent implantation of a bare-metal stent (BMS) for the treatment of everolimus-eluting stent (EES) restenosis caused by chronic stent recoil, and the BMS successfully escaped from duplicate restenosis and target lesion revascularization (TLR).


Journal of Nippon Medical School | 2015

Early Effects of Oral Pulmonary Vasodilators in an Elderly Patient with Critical Thromboembolic Pulmonary Hypertension: A Case Report.

Hirotake Okazaki; Noritake Hata; Akihiro Shirakabe; Masafumi Tsurumi; Takuro Shinada; Wataru Shimizu

A 70-year-old woman who had been treated for bipolar disorder and dementia was admitted to the intensive care unit of a university hospital with severe dyspnea; pulmonary arterial hypertension was diagnosed after cardiac catheterization was performed. Computed tomography pulmonary angiography showed typical signs of chronic thrombosis in the proximal pulmonary artery without an adequate amount of fresh thrombi, which appeared to be the cause of the elevation in pulmonary artery pressure, and resulted in severe hypoxemia. Therefore, the pulmonary arterial hypertension was classified as belonging to the chronic thromboembolic pulmonary hypertension subgroup. Although the patients respiratory condition was classified as World Health Organization class IV, she was treated with the combination of oral ambrisentan and tadalafil, rather than intravenous epoprostenol, which she was unable to tolerate. Consequently, both her symptom and hemodynamic status showed rapid improvement with only oral pulmonary vasodilators. This case demonstrates the efficacy of oral treatment alone in elderly patients with severe chronic thromboembolic pulmonary hypertension.


Case Reports | 2014

Successful treatment of ball-shaped very late thrombus after myocardial infarction

Toru Inami; Masafumi Tsurumi; Yoshihiko Seino; Wataru Shimizu

A 40-year-old man presented with chest pain. Eight years ago he had suffered from acute anteroseptal ST-elevation myocardial infarction (MI) and 3 years ago he stopped taking medicines including antiplatelet drugs and warfarin by himself. ECG showed no ST-elevation this time; however, elevation of troponin T was detected, which diagnosed a second attack of MI. Emergent coronary angiography showed total occlusion of previously deployed stent in the left ascending coronary artery. His conventional coronary risk factors were smoking and dyslipidaemia. Transthoracic echocardiography revealed a huge pedunculated, oscillating mass at the left …

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