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Aihara K, Torii S, Nakamura N, Nakazawa G, Ikari Y. Pathological analysis of struts coverage after second- and third-generation drug-eluting stents implantation for duration of dual anti-platelets therapy; an autopsy study. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Strut coverage of drug-eluting stents (DES) is one of the important factors for the duration of dual anti-platelets therapy (DAPT) after percutaneous coronary intervention. Several studies have reported percent coverage of struts assessed by optical coherence tomography (OCT), however, the timing of endothelial coverage of the latest second- and third-generation DES has not been revealed histologically.
Methods and results
From CVHills stent autopsy registry of 171 stented lesions, a total of 56 lesions from 39 autopsy cases with less than 370 days after second- and/or third-generation DES implantation was evaluated histologically. The lesions were stratified by duration: 1–30 days (n=39), 31–60 days (n=4), 61–90 days (n=5), 91–180 days (n=2), and 181–370 days (n=6), and percent coverage of struts, which was defined as neointimal coverage overlying with endothelial cells, was evaluated for each lesion. In addition, difference of coverage within 90 days after implantation between second-generation DES with circumferentially coated polymer and third-generation DES with abluminally coated polymer was also evaluated.
Percent strut coverage increased with time [1–30 days vs. 31–60 days vs. 61–90 days vs. 91–180 days vs. 181–370 days: median (interquartile range) 0.0% (0.0–0.3), 6.3% (1.0–11.7), 16.7% (8.0–32.6), 64.2% (55.6–72.9), and 86.5% (63.5–92.5), respectively, p<0.0001]. When the coverage at the earlier time point was compared between second- and third-generation DES, prevalence of coverage with >25% per section was higher in third-generation DES and the difference was more obvious in 61–90 days after stent implantation (0.0 vs. 1.0%, p=0.15 in 1–30 days, 7.7 vs. 14.3%, p=0.65 in 31–60 days, and 10.0 vs. 36.3%, p=0.04 in 61–90 days).
Conclusions
The current pathological analysis has demonstrated that the process of endothelial strut coverage in second- and third-generation DES proceeds over time, however, the speed was slower than reported in the previous studies evaluated with OCT. Furthermore, endothelial strut coverage of third-generation DES was faster than that of second-generation DES, suggesting a positive roll of abluminal coating on healthy endothelial coverage and safety de-escalation of DAPT at earlier timepoint.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- K Aihara
- Tokai University School of Medicine , Kanagawa , Japan
| | - S Torii
- Tokai University School of Medicine , Kanagawa , Japan
| | - N Nakamura
- Tokai University School of Medicine , Kanagawa , Japan
| | | | - Y Ikari
- Tokai University School of Medicine , Kanagawa , Japan
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Nakamura N, Torii S, Aihara K, Kato T, Ikari Y, Nakazawa G. Impact of poor below-the-knee run-off on stent failure of femoro-popliteal arteries in healthy swine model. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Poor below-the-knee (BTK) run-off is reported to be one of the predictors of stent failure after endovascular treatment to femoro-popliteal arteries (1), however, the mechanism of stent failure has never been characterized before. The aim of the current study was to evaluate impact of poor BTK run-off on stent failure in healthy swine femoro-popliteal (FP) lesions, and to compare the outcome of a bare-metal stent (BMS) and two drug-eluting stents (DES) in the arteries with poor BTK run-off.
Method
Fluoropolymer-coated paclitaxel-eluting stents (FP-PES, Eluvia) and BMS were implanted in bilateral femoral arteries of 6 healthy swine following coil embolization in both tibial arteries to induce poor BTK run-off. FP-PES and polymer-free paclitaxel-coated stents (PF-PCS, Zilver-PTX) were also implanted in 6 swine with the same fashion. Angiography with an optical coherence tomography (OCT) at one month followed by histological analysis was performed for each lesion.
Result
Angiography demonstrated that in-stent restenosis was observed exclusively in BMS, and percent stenosis was significantly less in FP-PES compared with BMS (FP-PES vs. BMS, median [interquartile range (IQR)], 17.8% [16.6–28.7] vs. 79.3% [64.2–87.2], respectively, p=0.03). FP-PES also demonstrated significantly less percent stenosis compared with PF-PCS (FP-PES vs. PF-PCS, 8.9% [4.7–44.7] vs. 31.2% [23.3–51.2], respectively, p=0.03). Histopathological evaluation demonstrated that organizing and/or organized fibrin thrombus was the main feature of the restenotic lesions, suggesting a risk of thrombus attachment in the FP lesions with poor BTK run-off. Biologic drug effect such as medial smooth muscle cell (SMC) loss score was significantly greater in FP-PES compared with BMS (4.0 [3.3–4.0] vs. 2.0 [1.0–3.0], respectively, p<0.01), whereas, similar between FP-PES and PF-PCS (4.0 [3.0–4.0] vs. 4.0 [3.0–4.0], respectively, p=0.88).
Conclusion
Thrombus attachment would be the main causes of restenosis in FP lesions with poor BTK runoff. The results of the current study suggest that not only paclitaxel drug effect, but also anti-thrombotic effect of fluoropolymer might be needed to prevent stent failure.
Funding Acknowledgement
Type of funding sources: Private company. Main funding source(s): This study is supported by Boston Scientific.
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Affiliation(s)
- N Nakamura
- Tokai University Hospital , Isehara , Japan
| | - S Torii
- Tokai University Hospital , Isehara , Japan
| | - K Aihara
- Tokai University Hospital , Isehara , Japan
| | - T Kato
- Akita University Graduate School of Medicine, Cardiology , Akita , Japan
| | - Y Ikari
- Tokai University Hospital , Isehara , Japan
| | - G Nakazawa
- Kinki University, Department of Cardiology , Osaka , Japan
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Abe T, Jujo K, Moriyama T, Iwanami Y, Shimazaki K, Hara M, Nakazawa G, Hagiwara N, Saito K. Insufficient lipid lowering therapy could not bring favorable prognostic effect in high risk patients who were functionally deferred percutaneous coronary intervention. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Deferral of percutaneous coronary intervention (PCI) of a functionally insignificant stenosis is associated with favorable long-term prognoses. However, previous reports revealed that patients with fractional flow reserve (FFR) 0.81–0.85 had higher cardiovascular adverse event rates than those with FFR >0.85. Numbers of large clinical trials established the lower, the better strategy for low-density lipoprotein cholesterol (LDL-C) management for patients after PCI. However, in the real clinical practice, the achievement rate of target LDL-C is often insufficient in patients with atherosclerotic risk factors who were functionally deferred PCI.
Purpose
We aimed to examine optimal LDL-C management for patients with intermediate coronary stenosis deferred PCI by FFR measurement.
Methods
This observational study included 293 consecutive patients with coronary stenosis deferred PCI due to greater FFR than 0.80. We separately analyzed 90 patients with 0.81–0.85 of FFR and 203 patients with >0.85. Patients in each group were further classified into 2 groups based on LDL-C level at one year after FFR measurement; the Lower LDL-C group (<100 mg/dL) and the Higher LDL-C group (>100 mg/dL). The primary endpoint was major adverse cardiovascular and cerebrovascular events (MACCE) including death, non-fatal myocardial infarction, ischemic stroke, heart failure hospitalization and unplanned revascularization.
Results
Patients with FFR 0.81–0.85 had a significantly higher MACCE rate than those with FFR >0.85 (hazard ratio (HR): 1.77, 95% confidence interval (CI): 1.02–3.07, p=0.043). In patients with FFR 0.81–0.85, the Lower LDL-C group (n-=53) had a significantly lower rate of the primary endpoint than the Higher LDL-C group (HR: 0.41, 95% CI: 0.18–0.97, Log-rank p=0.036, Figure A). Whereas, there was no significant difference in the event rate between 2 groups in patients with FFR >0.85 (Log-rank p=0.42, Figure B).
Conclusion
Uncontrolled LDL-C level was associated with higher MACCE rate in patients who were deferred PCI due to FFR 0.81–0.85. These results suggested that even in patients who were deferred PCI, those with coronary artery stenosis of lower FFR value should receive strict LDL-C lowering therapy with close monitoring.
Figure 1
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- T Abe
- Nishiarai Heart Center, Tokyo, Japan
| | - K Jujo
- Tokyo Women's Medical University Medical Center East, Cardiology, Tokyo, Japan
| | | | - Y Iwanami
- Nishiarai Heart Center, Tokyo, Japan
| | | | - M Hara
- Shimane University Graduate School of Medicine, Center for Community-Based Healthcare Research and Education, Shimane, Japan
| | - G Nakazawa
- Kindai University, Cardiology, Osaka, Japan
| | - N Hagiwara
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - K Saito
- Nishiarai Heart Center, Tokyo, Japan
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Watanabe Y, Nara Y, Hioki H, Kawashima H, Kataoka A, Nakashima M, Nishihata Y, Hayashida K, Yamamoto M, Tanaka J, Mizutani K, Jujo K, Nakazawa G, Izumo M, Kozuma K. Short-term effects of low-dose tolvaptan in acute decompensated heart failure patients with severe aortic stenosis: the LOHAS registry. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Tolvaptan exerts potent diuretic effects in heart failure patients without hemodynamic instability. Nonetheless, its clinical efficacy for acute decompensated heart failure (ADHF) due to severe aortic stenosis (AS) remains unclear. This study aimed to evaluate the short-term effects of tolvaptan in ADHF patients with severe AS.
Methods
The LOw-Dose Tolvaptan (7.5 mg) in Decompensated Heart Failure Patients with Severe Aortic Stenosis (LOHAS) registry is a multicenter (7 centers) prospective registry that assessed the short-term effects of tolvaptan in subjects hospitalized for ADHF with severe AS. A total of 59 subjects were enrolled between September 2014 and December 2017. The primary endpoints were changes in body weight and fluid balance measured daily from baseline up to 4 days.
Results
The median [interquartile range] patient age and aortic valve area were 85.0 [81.0–89.0] years and 0.58 [0.42–0.74] cm2, respectively. Body weight continuously decreased, and fluid balance was maintained from baseline to day 4 (p<0.001, p=0.194, respectively). Median serum B-type natriuretic peptide concentration significantly decreased from 910.5 to 740.0 pg/mL by day 4 (p=0.002). However, systolic blood pressure and heart rate were non-significantly changed (p=0.250, p=0.656, respectively). Hypernatremia (>150 mEq/L) and worsening renal function occurred in 2 (3.4%) and 4 (6.8%) patients, respectively.
Conclusions
Short-term treatment with low-dose tolvaptan is safe and effective, providing stable hemodynamic parameters in patients with ADHF and severe AS.
Funding Acknowledgement
Type of funding source: Private company. Main funding source(s): This research was supported by Otsuka Pharmaceutical Co., Ltd.
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Affiliation(s)
- Y Watanabe
- Teikyo University Hospital, Tokyo, Japan
| | - Y Nara
- Teikyo University Hospital, Tokyo, Japan
| | - H Hioki
- Teikyo University Hospital, Tokyo, Japan
| | | | - A Kataoka
- Teikyo University Hospital, Tokyo, Japan
| | | | - Y Nishihata
- St. Luke's International Hospital, Cardiology, Tokyo, Japan
| | | | - M Yamamoto
- Nagoya Heart Center, Cardiology, Nagoya, Japan
| | - J Tanaka
- Tokyo Metropolitan Geriatric Hospital, Cardiology, Tokyo, Japan
| | - K Mizutani
- Osaka City University Graduate School of Medicine, Cardiology, Osaka, Japan
| | - K Jujo
- Nishiarai Heart Center, Cardiology, Tokyo, Japan
| | - G Nakazawa
- Tokai University School of Medicine, Cardiology, Kanagawa, Japan
| | - M Izumo
- St. Marianna University School of Medicine, Cardiology, Kawasaki, Japan
| | - K Kozuma
- Teikyo University Hospital, Tokyo, Japan
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Nakamura N, Torii S, Ijichi T, Jujo K, Hara M, Ikari Y, Nakazawa G. The clinical and pathological features of intraplaque hemorrhage in coronary artery -insights from Japan DCA registry-. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Intraplaque hemorrhage (IPH) is known to play an important role in plaque vulnerability in coronary artery. However, the biological reaction in IPH and clinical features of patients with IPH remain unknown, since most histological studies of IPH in coronary artery were performed on autopsy cases. Directional coronary atherectomy (DCA) enables the direct pathological evaluation of collected tissue from “living” patients.
Purpose
We aimed to clarify the clinical presentations and histopathologic features of IPH using specimens obtained by DCA.
Method
This multicentral prospective observational study included consecutive patients who underwent percutaneous coronary intervention for de novo lesions using DCA from June 2015 to February 2018. Histopathological sections that were collected from coronary plaques by DCA were evaluated and classified by the presence of IPH. IPH in DCA specimens was defined as clusters of hemosiderin (Figure A, arrows), erythrocytes (Figure B, arrow heads) and fibrin (Figure C, arrows) within the coronary plaque. A total of 154 de novo lesions from 154 patients were ultimately analyzed, and were divided into IPH group (n=37) and non-IPH group (n=117).
Result
Clinical profiles of patients in the two groups were comparable, except that unstable angina rather than chronic coronary syndrome was significantly more prevalent in the IPH group (32.4% vs. 16.2%, P=0.04). Histopathological analysis showed a significantly higher incidence of cellular-rich plaque (46.0% vs. 25.6%, P=0.02) and spindle-shaped cells (18.9% vs. 6.0%, P=0.02), which indicate active cell proliferations, in the IPH group. The prevalence of necrotic core was also higher in IPH group compared to non-IPH group (48.7% vs. 13.7%, P<0.01).
Conclusion
Pathohistological analysis revealed that coronary plaques with IPH had an active cell proliferation, and patients with IPH likely to had clinical presentations of unstable angina.
Figure 1
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- N Nakamura
- Tokai University School of Medicine, Isehara, Japan
| | - S Torii
- Tokai University School of Medicine, Isehara, Japan
| | - T Ijichi
- Tokai University School of Medicine, Isehara, Japan
| | - K Jujo
- Tokyo Women's Medical University, Tokyo, Japan
| | - M Hara
- Shimane University Graduate School of Medicine, Center for Community-based Healthcare Research and Education, Izumo, Japan
| | - Y Ikari
- Tokai University School of Medicine, Isehara, Japan
| | - G Nakazawa
- Kinki University, Department of Cardiology, Osaka, Japan
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Horinouchi H, Nagai T, Ohno Y, Murakami T, Miyamoto J, Sakai K, Okada K, Nakazawa G, Yoshioka K, Ikari Y. P295 Impact of Pre-existing Mitral Regurgitation on the Mid-Term Left Ventricular Mass Regression following Transcatheter Aortic Valve Implantation for Aortic Valve Stenosis. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Transcatheter aortic valve implantation (TAVI) results in an immediate and greater aortic pressure gradient improvement in patients with severe aortic valve stenosis (AS), and induces early left ventricular (LV) mass regression, which may be related to favorable effects on the mid to long term outcomes. However, the extent of LV mass regression after unloading of chronic pressure overload is varying, and its determinants are still unknown. Thus, the study aims to identify echocardiographic determinants of LV mass regression following TAVI.
Methods
We retrospectively screened all TAVI procedures in symptomatic AS from 2017 to 2019, and selected 74 successful TAVI cases that had serial echocardiographic studies both at the baseline and at the mid-term follow-up (4 to 6 months after the procedure). Through the digitalized medical records, clinical and echocardiographic data as well as angiographic grading (0-3) of post-procedure paravalvular leakage (PVL) were obtained. LV mass was calculated by using Cube formula. Thus, the extent of LV mass regression was defined as the differences of left ventricular mas index (LVMI) between at the baseline and at the follow-up (ΔLVMI). Quantification of the baseline mitral valve regurgitant volume was performed by stroke volume method with pulmonic site measurement on the assumption of no pre-existing intra/extra cardiac shunt. Cases with prior mitral valve replacement were excluded.
Results
At the post-procedure angiogram, only 3 cases had significant PVL (grade 2≤). At the mid-term follow–up, average LVMI decreased significantly from the baseline (165 ± 38 g/m2vs 140 ± 37 mg/ m2, P < 0.0001) and 57 cases (70%) experienced the reduction of LVMI, although average relative wall thickness (2 × posterior wall thickness/left ventricular diastolic dimension) did not change (0.565 ± 0.135 vs 0.586 ± 0.168, P = 0.314). Among the baseline clinical and echocardiographic variables, the baseline peak A wave velocity, E/A ratio, mitral valve regurgitant volume and LVMI revealed simple correlation with ΔLVMI (γ=-0.298, p = 0.0188;γ=0.251, P = 0.0417;γ=0.354, p = 0.0041;γ=0.375, p < 0.0010; respectively), whereas no correlation was observed in angiographic PVL grade. Stepwise multiple regression analysis demonstrated baseline mitral valve regurgitant volume and LVMI as the determinants of ΔLVMI (β=0.344, p = 0.032; β=0.335 P < 0.0001; respectively).
Conclusions
Pre-existing mitral regurgitation has an impact on the mid–term left ventricular mass regression following TAVI. In severe AS, mitral regurgitation might be functioning as an afterload adjuster, and thus, produces protective effects on LV structure.
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Affiliation(s)
| | - T Nagai
- Tokai University School of Medicine, Kanagawa, Japan
| | - Y Ohno
- Tokai University School of Medicine, Kanagawa, Japan
| | - T Murakami
- Tokai University School of Medicine, Kanagawa, Japan
| | - J Miyamoto
- Tokai University School of Medicine, Kanagawa, Japan
| | - K Sakai
- Tokai University School of Medicine, Kanagawa, Japan
| | - K Okada
- Tokai University School of Medicine, Kanagawa, Japan
| | - G Nakazawa
- Tokai University School of Medicine, Kanagawa, Japan
| | - K Yoshioka
- Tokai University School of Medicine, Kanagawa, Japan
| | - Y Ikari
- Tokai University School of Medicine, Kanagawa, Japan
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Shinada K, Kohno T, Fukuda K, Higashitani M, Kawamatsu N, Kitai T, Shibata T, Takei M, Nochioka K, Nakazawa G, Shiomi H, Miyashita M, Mizuno A. 2206Prevalence and determinants of complicated grief in bereaved caregivers of patients admitted for cardiovascular diseases. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0110] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction
Few studies have examined complicated grief in bereaved caregivers of patients with cardiovascular diseases (CVD), in contrast with studies in caregivers of patients with cancers. We examined the prevalence and determinants of complicated grief among bereaved caregivers of patients with CVD.
Methods
We conducted a cross-sectional survey using a self-administered questionnaire for bereaved family members of CVD patients who had died in the cardiology departments of 9 tertiary care centers in Japan. We assessed bereaved caregiver grief status using the Brief Grief Questionnaire (BGQ), and its association with their depression (Patient Health Questionnaire-9 [PHQ-9]). Questionnaire also covered following associated factors: bereaved family member and patient characteristics, end-of-life care (Care Evaluation Scale [CES], a scale for assessment of the structure and process of care); and the quality of the deceased patients' death (Good Death Inventory [GDI]).
Results
A total of 269 bereaved caregivers (mean age, 64±12 years; 35% male) of patients with CVD (heart failure n=155 myocardial infarction n=32, cardiopulmonary arrest n=15, arrhythmia n=8, and others n=59) were enrolled in the study. Overall, 14.1% of the bereaved caregivers had complicated grief (BGQ≥8), 32.3% had subthreshold complicated grief (BGQ=5–7), and 13.3% had depression (PHQ-9≥10). Bereaved caregivers with complicated grief frequently developed depression (58% vs. 6%, p<0.001). Among the bereaved caregivers with complicated grief, the assessment of end-of-life care was worse (CES score: 28 [21–40] vs. 23 [19–39], p=0.04), and the assessment of the deceased patients' quality of death tended to be worse (GDI score: 4.0 [3.0–4.8] vs. 4.3 [3.7–4.9], p=0.05). The cause of admission as well as preferences of the patient and family (e.g., treatment [focusing on extending life vs. relieving discomfort], desire for information, place of end-of-life) were not associated with the prevalence of complicated grief. The prevalence of complicated grief was associated with loss of a spouse, poor psychological health during the deceased patients' admission, and poor preparation for the patient's imminent death (all p<0.05). Bereaved caregivers with complicated grief had experienced more decisional burdens regarding the deceased patients' treatment (55% vs. 25%, p=0.001). Notably, 64% of bereaved caregivers with complicated grief were not treated (i.e., neither routine follow-up by psychiatrists/psychotherapist nor prescription for anti-depressants/tranquilizers).
Conclusions
The prevalence of complicated grief of bereavement was 14.0%. When subthreshold complicated grief was included, the prevalence of complicated grief increased to include half of the caregivers; therefore, routine screening of the bereaved could be recommended. Clinicians should pay particular attention to bereaved families with high risk factors to identify those at risk for future development of complicated grief.
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Affiliation(s)
- K Shinada
- Keio University School of Medicine, Division of Cardiology, Department of Medicine, Tokyo, Japan
| | - T Kohno
- Keio University School of Medicine, Division of Cardiology, Department of Medicine, Tokyo, Japan
| | - K Fukuda
- Keio University School of Medicine, Division of Cardiology, Department of Medicine, Tokyo, Japan
| | - M Higashitani
- Tokyo Medical University Ibaraki Medical Center, Department of Cardiology, Ibaraki, Japan
| | - N Kawamatsu
- Mito Saiseikai General Hospital, Department of Cardiology, Ibaraki, Japan
| | - T Kitai
- Kobe City Medical Center General Hospital, Departments of 1) Cardiovascular Medicine and 2) Clinical Research Support, Kobe, Japan
| | - T Shibata
- Kurume University School of Medicine, Division of Cardiovascular Medicine, Department of Internal Medicine, Fukuoka, Japan
| | - M Takei
- Tokyo Saiseikai Central Hospital, Department of Cardiology, Tokyo, Japan
| | - K Nochioka
- Tohoku University Graduate School of Medicine, Department of Cardiovascular Medicine, Sendai, Japan
| | - G Nakazawa
- Tokai University School of Medicine, Department of Cardiology, Kanagawa, Japan
| | - H Shiomi
- Kyoto University Graduate School of Medicine, Department of Cardiology, Kyoto, Japan
| | - M Miyashita
- Tohoku University Graduate School of Medicine, Division of Palliative Nursing, Health Sciences, Sendai, Japan
| | - A Mizuno
- St. Luke's International Hospital, Department of Cardiology, Tokyo, Japan
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Ikari Y, Shinozaki N, Yoshimachi F, Nakazawa G, Ohno Y, Nakano M, Fujii T, Murakami T. P2601New application of universal guiding catheter Ikari Left to balloon pulmonary angioplasty for chronic thromboembolic pulmonary hypertension. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p2601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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9
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Natsumeda M, Nakazawa G, Torii S, Murakami T, Ijichi T, Ohno Y, Masuda N, Shinozaki N, Ogata N, Ikari Y. A new scoring system for predicting FFR results. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.p5528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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10
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Nakazawa G, Ladich E, Virmani R. Are Drug-Eluting Stents Safe?: Definitely! Or Probably…Possibly? Or Maybe Not Yet…. Clin Pharmacol Ther 2009; 86:127-30. [DOI: 10.1038/clpt.2009.113] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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11
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Nakazawa G, Lulu RE, Koo AH. Intracerebellar coccidioidal granuloma. AJNR Am J Neuroradiol 1983; 4:1243-4. [PMID: 6419565 PMCID: PMC8334167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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