著者

Hiroshi Kadowaki Junichi Ishida Hiroshi Akazawa Hiroki Yagi Akiko Saga-Kamo Masahiko Umei Ryo Matsuoka Qing Liu Hiroshi Matsunaga Hisataka Maki Yusuke Sato Haruki Kume Issei Komuro

出版者

The Japanese Circulation Society

雑誌

Circulation Reports (ISSN:24340790)

巻号頁・発行日

pp.CR-21-0008, (Released:2021-03-10)

参考文献数

24

被引用文献数

5

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Background:Axitinib is a tyrosine kinase inhibitor (TKI) that inhibits vascular endothelial growth factor receptor signaling and is approved for second-line treatment of advanced renal cell carcinoma (RCC). Although the occurrence of hypertension with axitinib use has been documented, it is unclear whether a first-line TKI regimen can significantly affect the development of hypertension when axitinib is used as second-line therapy.Methods and Results:In this single-center retrospective study, advanced RCC patients treated with axitinib after first-line chemotherapy were divided into 2 groups according to the use of TKIs as part of first-line treatment before the initiation of axitinib. Clinical outcomes were compared between patients who were treated with (TKI(+); n=11) or without (TKI(–); n=11) a TKI. Although 63.6% of all patients had hypertension at baseline, axitinib-induced hypertension developed in 81.8% of patients, and 36.4% of patients experienced Grade 3 hypertension. After initiation of axitinib, both systolic and diastolic blood pressures and the hypertension grade were significantly elevated both in the TKI(+) and TKI(–) groups, and the number of antihypertensive drugs was significantly increased among all patients.Conclusions:This study suggests the need for proper monitoring and management of blood pressure in RCC patients treated with axitinib, regardless of a prior regimen with or without TKIs.

著者

Masataka Sato Satoshi Kodera Naoto Setoguchi Kengo Tanabe Shunichi Kushida Junji Kanda Mike Saji Mamoru Nanasato Hisataka Maki Hideo Fujita Nahoko Kato Hiroyuki Watanabe Minami Suzuki Masao Takahashi Naoko Sawada Masao Yamasaki Shinnosuke Sawano Susumu Katsushika Hiroki Shinohara Norifumi Takeda Katsuhito Fujiu Masao Daimon Hiroshi Akazawa Hiroyuki Morita Issei Komuro

出版者

The Japanese Circulation Society

雑誌

Circulation Journal (ISSN:13469843)

巻号頁・発行日

pp.CJ-23-0216, (Released:2023-11-14)

参考文献数

41

被引用文献数

2

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Background: Left heart abnormalities are risk factors for heart failure. However, echocardiography is not always available. Electrocardiograms (ECGs), which are now available from wearable devices, have the potential to detect these abnormalities. Nevertheless, whether a model can detect left heart abnormalities from single Lead I ECG data remains unclear.Methods and Results: We developed Lead I ECG models to detect low ejection fraction (EF), wall motion abnormality, left ventricular hypertrophy (LVH), left ventricular dilatation, and left atrial dilatation. We used a dataset comprising 229,439 paired sets of ECG and echocardiography data from 8 facilities, and validated the model using external verification with data from 2 facilities. The area under the receiver operating characteristic curves of our model was 0.913 for low EF, 0.832 for wall motion abnormality, 0.797 for LVH, 0.838 for left ventricular dilatation, and 0.802 for left atrial dilatation. In interpretation tests with 12 cardiologists, the accuracy of the model was 78.3% for low EF and 68.3% for LVH. Compared with cardiologists who read the 12-lead ECGs, the model’s performance was superior for LVH and similar for low EF.Conclusions: From a multicenter study dataset, we developed models to predict left heart abnormalities using Lead I on the ECG. The Lead I ECG models show superior or equivalent performance to cardiologists using 12-lead ECGs.

著者

Teruhiko Imamura Koichiro Kinugawa Taro Shiga Naoko Kato Miyoko Endo Toshiro Inaba Hisataka Maki Masaru Hatano Atsushi Yao Yasunobu Hirata Takashi Nishimura Shunei Kyo Minoru Ono Ryozo Nagai

出版者

一般社団法人 インターナショナル・ハート・ジャーナル刊行会

雑誌

International Heart Journal (ISSN:13492365)

巻号頁・発行日

vol.53, no.6, pp.391-393, 2012 (Released:2012-12-18)

参考文献数

16

被引用文献数

7 9

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Hypervolemic hyponatremia is often complicated with advanced heart failure together with increased excretion of sodium by diuretics. Tolvaptan, an oral vasopressin-2-receptor antagonist, has been previously reported to improve congestion and correct hyponatremia through increased excretion of free water. However, there is little evidence concerning the administration of tolvaptan in patients with stage D heart failure. We experienced 2 patients with stage D heart failure who received 3.75 mg/day of tolvaptan to correct hyponatremia before ventricular assist device implantation. It may be useful, even for patients with stage D heart failure, to administer a low dose of tolvaptan to treat hyponatremia before ventricular assist device implantation to avoid a drastic alteration in serum sodium concentration perioperatively.

著者

Teruhiko Imamura Koichiro Kinugawa Masaru Hatano Takeo Fujino Toshiro Inaba Hisataka Maki Osamu Kinoshita Kan Nawata Shunei Kyo Minoru Ono Issei Komuro

出版者

日本循環器学会

雑誌

Circulation Journal (ISSN:13469843)

巻号頁・発行日

vol.78, no.9, pp.2259-2267, 2014-08-25 (Released:2014-08-25)

参考文献数

28

被引用文献数

17 48

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Background:Depressed hemodynamics stimulates arginine vasopressin (AVP) release, but the relationship between plasma AVP levels (P-AVP) and cardiac parameters, especially in patients with stage D heart failure (HF) receiving guideline-directed medical therapy, has not examined.Methods and Results:Data including P-AVP were obtained from 162 in-hospital patients with stage D HF and from 80 patients receiving ventricular assist device (VAD, n=46) or heart transplantation (HTx, n=34) at 3 months after surgery. In the HF group, considerably high P-AVP (5.9±6.1 pg/ml) negatively correlated with serum sodium concentration (S-Na, 135.3±5.8 mEq/L, r=–0.548 [P<0.01]) and cardiac index (CI, 2.2±0.5 L·min–1·m–2, r=–0.458 [P<0.01]). After VAD/HTx treatment, improvement in the CI (2.7±0.5 L·min–1·m–2[P<0.01] vs. HF) was accompanied by normalization of serum sodium concentration (S-Na; 138.2±2.0 mEq/L [P<0.01] vs. HF) and suppressed release of AVP (1.7±3.4 pg/ml [P<0.01] vs. HF). P-AVP positively correlated with only S-Na (r=0.454 [P<0.01]), whereas no correlation was observed with CI after VAD/HTx treatment. P-AVP ≥5.3 pg/ml well predicted poor 2-year survival in HF group (60% [P<0.01] vs. 90%).Conclusions:Low cardiac output stimulates AVP release via a non-osmotic process that results in hyponatremia and poor prognosis in patients with stage D HF. After sufficient recovery of cardiac output by cardiac replacement therapy, AVP release is suppressed and is mainly regulated by serum osmolality. (Circ J 2014; 78: 2259–2267)

著者

Teruhiko Imamura Koichiro Kinugawa Naoko Kato Hironori Muraoka Takeo Fujino Toshiro Inaba Hisataka Maki Osamu Kinoshita Masaru Hatano Shunei Kyo Minoru Ono

出版者

The Japanese Circulation Society

雑誌

Circulation Journal (ISSN:13469843)

巻号頁・発行日

vol.78, no.3, pp.625-633, 2014 (Released:2014-02-25)

参考文献数

34

被引用文献数

56 55

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Background: The continuous flow (CF) left ventricular assist device (LVAD) has replaced the pulsatile flow (PF) LVAD because of its advantages of better patient survival and higher quality of life. However, “late-onset right ventricular failure (RVF)” after CF LVAD implantation has emerged as an increasing concern, but little is known about the mechanism. Methods and Results: We retrospectively analyzed the 3-month hemodynamic and echocardiographic data from 38 consecutive patients who had received CF LVADs, and from 22 patients who had received PF LVADs. Late-onset RVF was defined as persistent right ventricular stroke work index (RVSWI) <4.0g/m2 at any rotation speed and after saline infusion test at 5 weeks after implantation of CF LVAD. Patients with late-onset RVF had significantly impaired exercise tolerance indicated by shorter 6-min walking distance and lower peak VO2, and worsened tricuspid regurgitation, together with enlargement of the RV under CF LVAD treatment (all P<0.05). Univariable analyses demonstrated that preoperative smaller LV diastolic diameter (LVDd) was the risk factor for late-onset RVF with a cutoff value of 64mm calculated by ROC analysis (area under curve, 0.925). In contrast, there was no correlation between preoperative LVDd and postoperative RVSWI in the PF LVAD group, though their preoperative background was worse than that of the CF group. Conclusions: In the setting of preoperative small LVDd, CF LVAD may cause late-onset RVF by leftward shift of the interventricular septum.  (Circ J 2014; 78: 625–633)

著者

Teruhiko Imamura Koichiro Kinugawa Shun Minatsuki Hironori Muraoka Naoko Kato Toshiro Inaba Hisataka Maki Taro Shiga Masaru Hatano Atsushi Yao Shunei Kyo Issei Komuro

出版者

The Japanese Circulation Society

雑誌

Circulation Journal (ISSN:13469843)

巻号頁・発行日

vol.77, no.5, pp.1208-1213, 2013 (Released:2013-04-25)

参考文献数

29

被引用文献数

39 41

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Background: Urine osmolality (U-OSM) is valuable to predict response to tolvaptan (TLV) in decompensated heart failure patients, but measurement of U-OSM is not always available on site. Methods and Results: Data were collected from 66 hospitalized patients with decompensated heart failure who had received TLV at 3.75–15mg/day. U-OSM, which was estimated using the following formula: 1.07×{2×[(urine sodium (mEq/L)]+[urine urea nitrogen (mg/dl)]/2.8+[urine creatinine (mg/dl)]×2/3}+16, was well correlated with the actual measurement (r=0.938, P<0.001). Criteria consisting of C1 (estimated baseline U-OSM >358mOsm/L) and C2 (%decrease in estimated U-OSM >24% at 4–6h after the first TLV dose) significantly discriminated responders from non-responders (P<0.05). Conclusions: Response to TLV can be predicted using U-OSM, which can be estimated using urine urea nitrogen, sodium, and creatinine concentration data.  (Circ J 2013; 77: 1208–1213)

著者

Naoko Kato Koichiro Kinugawa Etsuko Nakayama Takako Tsuji Yumiko Kumagai Teruhiko Imamura Hisataka Maki Taro Shiga Masaru Hatano Atsushi Yao Chikako Miura Issei Komuro Ryozo Nagai

出版者

International Heart Journal Association

雑誌

International Heart Journal (ISSN:13492365)

巻号頁・発行日

vol.54, no.6, pp.382-389, 2013 (Released:2013-12-03)

参考文献数

36

被引用文献数

26 44

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Self-care is a cornerstone for the successful management of heart failure (HF). The purpose of this study was to examine the impacts of HF self-care on prognosis in Japanese patients with HF. A total of 283 HF outpatients (age 64 ± 14, 70% male, 52% HFrEF) were enrolled. We asked patients to answer about their adhevence to 5 self-care behaviors (medication, eating a low-sodium diet, regular exercise, daily weight check, and treatment seeking behavior). On the basis of the results, we classified patients into a good self-care group and a poor self-care group. The primary outcome was HF hospitalization and/or cardiac death. In total, 65% of patients were classifi ed into the poor self-care group. During a median follow-up of 2 years, cardiac events occurred more frequently in the poor self-care group (22% versus 9.6%, P = 0.013). Poor self-care was an independent risk factor for cardiac events in Cox regression analysis adjusted for clinical parameters (hazard ratio = 2.86, P = 0.005). Poor self-care was also associated with an increased number of HF hospitalizations as well as an extended length of hospital stay for HF. Poor knowledge about HF was an independent determinant for poor self-care in multivariate logistic regression analysis (odds ratio = 0.92, P = 0.019). Insufficient self-care is an independent risk factor for cardiac events in Japanese patients with HF.

著者

Shun Minatsuki Ichiro Miura Atsushi Yao Hiroyuki Abe Hironori Muraoka Mariko Tanaka Teruhiko Imamura Toshiro Inaba Hisataka Maki Masaru Hatano Koichiro Kinugawa Takashi Yao Masashi Fukayama Ryozo Nagai Issei Komuro

出版者

一般社団法人 インターナショナル・ハート・ジャーナル刊行会

雑誌

International Heart Journal (ISSN:13492365)

巻号頁・発行日

pp.14-220, (Released:2015-02-23)

被引用文献数

2 40

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Pulmonary hypertension (PH) induced by pulmonary tumor thrombotic microangiopathy (PTTM) can be fatal because its rapid progression confounds diagnosis, and it is difficult to control with therapy. Here we describe a woman with symptomatic PTTM-PH accompanying gastric cancer that was suspected from perfusion scintigraphy. PTTM-PH was diagnosed by gastroesophageal endoscopy and lung biopsy after partial control of PH using the platelet-derived growth factor (PDGF) receptor (PDGFR) tyrosine kinase inhibitor, imatinib. Treatment with sildenafil and ambrisentan further decreased PH, and she underwent total gastrectomy followed by adjuvant TS-1 chemotherapy. PH did not recur before her death from metastasis. Postmortem histopathology showed recanalized pulmonary arteries where the embolized cancer masses disappeared. PDGF-A, -B, and PDGFR-α, β expression was detected in cancer cells and proliferating pulmonary vascular endothelial cells. Thus, PTTM-PH was successfully controlled using a combination of imatinib, drugs to treat pulmonary arterial hypertension, and cancer management.