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ABSTRACT: Little is known about left ventricular (LV) reverse remodeling (LVRR) in long-term survivors with idiopathic dilated cardiomyopathy. We studied 59 patients with idiopathic dilated cardiomyopathy who had a potential clinical and echocardiographic follow-up period of >12 years. LVRR was defined as LV end-diastolic dimension ≤55 mm and fractional shortening ≥25% on the last echocardiogram. Of the 59 patients, 38 died (heart failure in 20, sudden death in 11, and other causes in 7), 2 underwent transplantation, and 19 survived. In the survivors, the LV size had significantly decreased and LV fractional shortening had significantly increased on the last echocardiogram. LVRR occurred in 37% of the survivors. The remaining 63% of the survivors still had LV dysfunction, but the LV end-systolic dimension had decreased significantly. In patients who died or underwent transplantation, the LV size significantly increased. No patient who died or underwent transplantation had LVRR. In conclusion, >60% of the long-term (>12 years) survivors with idiopathic dilated cardiomyopathy still had LV systolic dysfunction, but the LV end-systolic dimension had decreased significantly. In contrast, patients who died or underwent transplantation had significant LV enlargement. These results suggest that LVRR, even if it is not marked, is associated with a favorable prognosis.
The American journal of cardiology 10/2012; · 3.58 Impact Factor
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ABSTRACT: It remains unknown whether left ventricular (LV) reverse remodeling (LVRR) after therapy with angiotensin-converting enzyme inhibitors or angiotensin II receptor blockers and β blockers is correlated with prognosis in patients with idiopathic dilated cardiomyopathy. Forty-two patients with idiopathic dilated cardiomyopathy treated with the therapy were studied. Complete left ventricular reverse remodeling was defined as LV end-diastolic dimension ≤ 55 mm and fractional shortening ≥ 25% at the last echocardiographic assessment. The incidence of complete LVRR was significantly higher in patients who survived than in those who died or underwent heart transplantation. Patients were divided into 3 groups: death or transplantation, alive with complete LVRR, and alive without complete LVRR. Although patients who died or underwent transplantation did not show any LV improvements, those with complete LVRR showed significant improvements at 1 to 6 months after starting the therapy. Patients without complete LVRR also showed small but significant improvements at 1 to 6 months. The decrease in LV end-systolic dimension from the initial value to that at 1 to 6 months was an independent determinant of future cardiac death or transplantation. In conclusion, complete LVRR is related to favorable prognosis in patients with idiopathic dilated cardiomyopathy. The extent of left ventricular reverse remodeling at 1 to 6 months after starting the therapy is predictive of long-term prognosis.
The American journal of cardiology 02/2011; 107(7):1065-70. · 3.58 Impact Factor
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ABSTRACT: With aging, arterial stiffness increases and results in cardiovascular diseases. Recently, high brachial-ankle pulse wave velocity (baPWV), measured using a new noninvasive device to estimate arterial stiffness, was reported to be associated with the prevalence of cardiovascular diseases. The purpose of this study was to clarify the association between baPWV with 3-year mortality in community-dwelling older adults and to determine the cutoff value of baPWV in terms of mortality. A total of 530 subjects aged 65 years or older (men/women, 207:323; mean age, 76 years) participated. They were dichotomized by the median value of baPWV. Within 3 years, 30 deaths occurred, including 11 cardiovascular deaths. The high-baPWV group had a higher incidence of total deaths (high-baPWV group vs. low-baPWV group, 8.3 vs. 3.0%, respectively) and cardiovascular deaths (high-baPWV group vs. low-baPWV group, 3.8 vs. 0.4%, respectively). A high-baPWV level was associated with an increased risk of 3-year total mortality after adjustment for age, sex and systolic blood pressure (hazard ratio for high baPWV vs. low baPWV=2.98, 95% CI=1.25-7.07) and with an increased risk of 3-year cardiovascular mortality (hazard ratio for high baPWV vs. low baPWV=10.01, 95% CI=1.21-82.49). A receiver-operating characteristic curve showed that the optimal cutoff value of baPWV for total mortality was 19.63 m s(-1), and for cardiovascular mortality it was 19.63 m s(-1). This study provides a preliminary finding that assessment of arterial stiffness by baPWV might be a useful method to predict mortality risk in community-dwelling older adults. Large longitudinal studies for extended periods of time are necessary to confirm the association.
Hypertension Research 07/2010; 33(7):678-82. · 2.58 Impact Factor
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Tomoyuki Hamada,
Toru Kubo,
Hiroaki Kitaoka,
Takayoshi Hirota,
Eri Hoshikawa,
Kayo Hayato,
Yuji Shimizu,
Makoto Okawa,
Naohito Yamasaki,
Yoshihisa Matsumura,
Toshikazu Yabe, Jun Takata,
Yoshinori L Doi
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ABSTRACT: Although the dilated phase of hypertrophic cardiomyopathy (D-HCM) characterized by left ventricular (LV) systolic dysfunction and cavity dilatation has been reported to be a poor prognosis, this is now in contrast to the improved prognosis of dilated cardiomyopathy (DCM) in the era of advancements in heart failure management. There has been no investigation of the clinical features of D-HCM compared with those of DCM from the point of management of systolic dysfunction.
The aim of this study was to investigate the clinical features of D-HCM in comparison with those of DCM in a single institute.
We studied 20 consecutive patients with D-HCM (global ejection fraction < 50%) and 115 consecutive patients with DCM.
At diagnosis of D-HCM, 8 (40%) of the D-HCM patients already experienced dyspnea (New York Heart Association [NYHA] class >or= III). Left atrial diameter was larger and prevalence of atrial fibrillation was higher in the D-HCM group, although LV size was larger and LV ejection fraction was lower in the DCM group. During the follow-up period (4.0 years), 11 (55%) of the patients with D-HCM died. The 5-year survival rate from all-cause mortality including cardiac transplantation was 45.6% in patients with D-HCM vs 81.6% in patients with DCM (log-rank P = .0001).
Patients with D-HCM were more symptomatic at diagnosis, although LV dilatation and impaired fractional shortening seemed more severe in patients with DCM. The prognosis for D-HCM patients was worse than that for patients with DCM despite similar or even more intensive treatment for heart failure.
Clinical Cardiology 07/2010; 33(7):E24-8. · 2.15 Impact Factor
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Nippon Ronen Igakkai Zasshi Japanese Journal of Geriatrics 01/2010; 47(3):198-201.
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Toru Kubo,
Hiroaki Kitaoka,
Makoto Okawa,
Takayoshi Hirota,
Eri Hoshikawa,
Kayo Hayato,
Naohito Yamasaki,
Yoshihisa Matsumura,
Toshikazu Yabe,
Masanori Nishinaga, Jun Takata,
Yoshinori L Doi
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ABSTRACT: Hypertrophic cardiomyopathy (HCM) with an apical phenotype, in which hypertrophy of the myocardium predominantly involves the apex of the left ventricle, is not uncommon in Japan, but its morphologic variations are not well recognized. The aim of this study was to investigate if these variations have different clinical characteristics although they are still confused to be the same.
Patients with the apical phenotype were divided into 2 groups, the "pure-apical" form and the "distal-dominant" form, and their clinical profiles were compared. From the study cohort of 264 patients with HCM, 80 (30%) were classified as having the apical phenotype: 51 with the pure-apical form and 29 with the distal-dominant form. The age at diagnosis was approximately 60 years, and in both groups the majority were male. The distal-dominant group had a significantly larger left atrial diameter (43 vs 39 mm) and higher ratio of proven familial HCM (28 vs 6%), and were more symptomatic (New York Heart Association >or=3) at presentation (17 vs 0%). The event-free rate of cardiovascular events in patients with the distal-dominant form was significantly worse (log-rank P=0.012) than that in patients with the pure-apical form (follow-up period: asymptotically approximately 5 years).
The 2 phenotypes of apical HCM should be recognized and distinguished clinically.
Circulation Journal 10/2009; 73(12):2330-6. · 3.77 Impact Factor
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ABSTRACT: There have been few studies of the clinical features of hypertrophic cardiomyopathy (HCM) in a community-based patient cohort in Japan.
Cardiomyopathy registration was established in Kochi Prefecture and named the Kochi RYOMA (registry of myocardial diseases) study, consisting of 9 hospitals that registered 261 patients with a diagnosis of HCM. At registration, 74 patients (28%) had documented paroxysmal or chronic atrial fibrillation (AF). Although most patients (93%) were in New York Heart Association (NYHA) class I or II, 17 of the 18 patients in NYHA III had AF; 37 of the 74 patients with AF suffered from morbid events (embolism and/or heart failure (HF) admission), and 15 of 19 patients with embolic events had AF prior to or at the time of embolism. Of the 29 patients who had a history of HF admission, 8 had left ventricular systolic dysfunction, and the other 21 patients were hospitalized because of diastolic HF. AF occurred prior to HF in 20 of those 21 patients. Furthermore, 19 of those 20 patients with AF and diastolic HF were hospitalized within 1 year after detection of AF.
In an unselected regional registry, AF was the major determinant of clinical deteriorations in patients with HCM.
Circulation Journal 08/2009; 73(9):1599-605. · 3.77 Impact Factor
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ABSTRACT: An 83-year-old woman was admitted to our hospital with dyspnea. A chest X-ray showed cardiomegaly and pulmonary congestion. An echocardiogram revealed severe tricuspid regurgitation and markedly elevated transtricuspid pressure gradient of 103 mmHg. There was no left ventricular systolic or diastolic dysfunction. Laboratory evaluation revealed elevated free T4 and suppressed TSH levels. Serum level of anti-TSH receptor antibody was significantly elevated. A thyroid echogram demonstrated increased internal flow pattern in the thyroid gland. As a result of these findings, she was given a diagnosis of Basedow's disease associated with severe pulmonary hypertension and congestive heart failure. After treatment for hyperthyroidism with thiamazole, propranolol, furosemide, and warfarin, she made good recovery with gradual resolution of pulmonary hypertension. The severity of pulmonary hypertension in this case was significantly higher than that in previous reports, possibly because of concomitant minor pulmonary embolism, thiamine deficiency and anemia. In summary, we report a rare case of Basedow's disease with severe and reversible pulmonary hypertension that appeared in very old age.
Nippon Ronen Igakkai Zasshi Japanese Journal of Geriatrics 08/2009; 46(4):358-63.
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ABSTRACT: To examine prospectively the relationship between plasma B-type natriuretic peptide (BNP) levels in community-dwelling elderly and their hospitalization.
A total number of 644 subjects aged 65 years or older were recruited from the annual community health examinations. Those with a history of stroke or neurological findings were not included. After excluding those with old myocardial infarction, left ventricular dysfunction, moderate or severe valvular disorders, atrial fibrillation, renal insufficiency, and history of hospitalization within 1 year, 602 participants (226 men, 376 women; mean age, 80.3 +/- 6.2 years) remained eligible for this study. Antihypertensive medications, activities of daily living (ADL) score and history of hospitalization were assessed by annual interview. Measurement of casual blood pressure, Mini-Mental State Examination, electrocardiography and echocardiography were performed. Plasma BNP, serum creatinine, total cholesterol, albumin and hemoglobin A1c levels were also examined. A follow-up survey was performed for the occurrence and reasons for hospitalization.
During a median follow up of 37 months, 112 subjects were hospitalized. After adjustment for conventional risk factors of hospitalization using the Cox proportional hazard model, each increment of 1 standard deviation in log BNP levels was associated with a 36% increase in the risk of hospitalization (P = 0.02). Plasma BNP levels were significantly higher in the hospitalized subjects due to stroke, heart diseases, dementia, pneumonia and also difficulty to live alone than those of the subjects without hospitalization.
Plasma BNP level is a very useful biochemical marker predictive of future hospitalization in community-dwelling independent elderly people without apparent heart diseases.
Geriatrics & Gerontology International 07/2009; 9(2):148-54.
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ABSTRACT: An autopsy case of a 58-year-old woman with massive cardiac Involvement of adult T cell leukemia/lymphoma (ATLL) is reported. She developed cardiac failure due to aortic and mitral regurgitation with cardiac infiltration of ATLL cells, and underwent replacement of both aortic and mitral valves. Studies of the cut-surfaces revealed diffuse thickening of the subendocardial wall of the left chamber with widespread whitish-brown tumor infiltrates. In the regions surrounding the replaced aortic and mitral valves there was also massive tumor cell infiltration. The tumor cells infiltrating the cardiac muscle wall were T cell in origin and exhibited Leu-3a (CD4)-positive immunoreaction. Ultrastructurally, tumor cells contained markedly indented nuclei and some were attached directly to the muscle cells. These findings suggest that this was an unusual form of ATLL with widespread involvement of the heart.
Pathology International 12/2008; 48(3):221 - 224. · 1.62 Impact Factor
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Toru Kubo,
Yoshihisa Matsumura,
Hiroaki Kitaoka,
Makoto Okawa,
Takayoshi Hirota,
Tomoyuki Hamada,
Nobuhiko Hitomi,
Eri Hoshikawa,
Kayo Hayato,
Yuji Shimizu,
Naohito Yamasaki,
Toshikazu Yabe,
Masanori Nishinaga, Jun Takata,
Yoshinori Doi
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ABSTRACT: Although dilated cardiomyopathy (DCM) had a poor prognosis in the past, recent studies have shown better survival. However, little is known about the improvement of prognosis in the elderly. This study sought to clarify the changes in prognosis in elderly patients with DCM over the past 20 years.
We studied 54 consecutive patients with DCM (38 men and 16 women, aged 65-83 years) who were diagnosed at over 65 years of age. The patients were divided into two groups (group A: 12 patients diagnosed before 1990; group B: 42 patients diagnosed after 1990) because after 1990, based on growing evidence from large-scale, randomized clinical studies, we intentionally increased the use of angiotensin-converting enzyme inhibitors (ACEI) and then beta-blockers at our hospital.
There were no significant differences in age, gender, NYHA functional class, and the prevalence of atrial fibrillation and ventricular tachycardia between the two groups. Left ventricular (LV) size assessed by echocardiography was larger (LV end-diastolic diameter, 67+/-5.9 versus 62+/-6.6 mm; p=0.039) and LV ejection fraction measured by left ventriculography was lower (ejection fraction, 24+/-9 versus 35+/-10%; p=0.004) in group A. ACEI/angiotensin II type 1 receptor blockers (ARB) (0% versus 88%) or beta-blockers (0% versus 52%) were more frequently used in group B. Antiarrhythmics (class Ia or Ib) (75% versus 14%) were less often used in group B. The 5- and 10-year event-free survival rates for cardiac death were 75.4% and 22.0% in group A versus 81.2% and 71.3% in group B (log-rank test, p=0.014).
The prognosis of DCM patients in the elderly has significantly improved over the past 20 years. The advances in the pharmacologic treatment and earlier diagnosis may have contributed to the better survival.
Journal of Cardiology 11/2008; 52(2):111-7. · 1.28 Impact Factor
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Kayo Hayato,
Makoto Okawa,
Yoshihisa Matsumura,
Hiroaki Kitaoka,
Toru Kubo,
Nobuhiko Hitomi,
Naohito Yamasaki,
Toshikazu Yabe,
Takashi Furuno, Jun Takata,
Masanori Nishinaga,
Yoshinori L Doi
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ABSTRACT: The present study sought to investigate the echocardiographic features of hypertrophic cardiomyopathy (HCM) with mild left ventricular (LV) remodeling, particularly in relation to wall motion abnormalities.
Among the 137 consecutive patients with HCM, 13 patients (mean age 52 +/- 13 years) who progressed to mild LV systolic dysfunction (LV ejection fraction (LVEF) of 35-50%) were studied. By reviewing the echocardiograms of these patients, wall motion score index (WMSI) was scored using 16 segments model.
HCM patients with mild LV systolic dysfunction exhibited mild LV dilatation, mild left atrial dilatation, septal hypertrophy, and LV wall motion impairment localized in the septal and apical regions (septal WMSI 1.94 +/- 0.33 vs. total WMSI 1.51 +/- 0.25 and posterior WMSI 1.02 +/- 0.07; p < 0.001). During follow-up, further deterioration of LV systolic function (LVEF< 35%) was noted in five patients, who had less severe hypertrophy at the initial echocardiograms. These patients developed progressive LV cavity enlargement and more severe and extensive wall motion abnormalities, accompanied by septal akinesis and wall thinning, although posterolateral wall motion impairment was relatively mild (posterior WMSI 1.80 +/- 0.27 vs. septal WMSI 2.95 +/- 0.11; p < 0.001).
Septal and apical wall motions are reduced in HCM with mild LV remodeling. As LV dysfunction progresses, septal akinesis and wall thinning develop and LV cavity enlargement becomes more prominent, though posterolateral wall motion impairment is relatively mild.
Journal of Cardiology 04/2008; 51(2):95-105. · 1.28 Impact Factor
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Nippon Ronen Igakkai Zasshi Japanese Journal of Geriatrics 12/2007; 44(6):701-3.
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ABSTRACT: Although it is well-known that moderate and severe visual and/or hearing impairments in elderly persons reduce their activities of daily living (ADL) and their quality of life (QOL), most elderly people, their caregivers and even nurses/doctors do not care about those disturbances considering them as normal aging. We studied 1,874 community-dwelling elderly (813 men, 1,061 women, mean age; 76+/-9 yrs.) and demonstrated that apparently healthy older persons with slightly reduced function clarified by self-reported questionnaires do not only have lower scores of ADL and VAS (QOL), but also higher score of GDS 15, that is, they have a more depressive state, compared to those without visual and/or hearing impairments. Therefore, because visual and/or hearing functional impairments in the elderly, even if slight, affect their ADL impairments, QOL and mood, we should assess whether the older persons have visual/hearing disturbance(s) in functional screening and should give them some kinds of assistance to succeed in achieving on enjoyable elderly life.
Nippon Ronen Igakkai Zasshi Japanese Journal of Geriatrics 06/2007; 44(3):302-4.
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ABSTRACT: Although there has been great progress in reperfusion therapy, the role of coronary reperfusion for elderly patients with acute myocardial infarction has not been fully investigated. In general, mean age of the subjects in major trials was about 60 years old and approximately only 10 to 15% of patients were over age 75. On the other hand, large-scale registries such as the US national registry of myocardial infarction (NRMI) showed a higher prevalence of elderly (especially women) in the clinical setting. This discrepancy may be due to the fact that elderly patients with myocardial infarction have some difficulties in the treatment such as severe multi-vessel coronary lesions, non-cardiac complications and relatively high prevalence of adverse reactions to reperfusion therapy. Here we focus on the situation of elderly patients (especially those 75 years or older) with myocardial infarction in the "real world" clinical setting, showing the clinical changes and outcome of our registry in rural Japan: the Kochi AMI (KAMI) registry.
Nippon Ronen Igakkai Zasshi Japanese Journal of Geriatrics 12/2006; 43(6):693-6.
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Nippon rinsho. Japanese journal of clinical medicine 09/2006; 64 Suppl 6:25-8.
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Ichiro Miyano, Jun Takata,
Masanori Nishinaga,
Kiyohito Okumiya,
Tomio Hamada,
Toru Kubo,
Yukari Morita,
Makoto Okawa,
Naohito Yamasaki,
Kyoko Sato,
Kozo Matsubayashi,
Yoshinori Doi
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ABSTRACT: Aim: To investigate the association between the carotid atherosclerotic lesions assessed by high-resolution ultrasonography and high-sensitivity C-reactive protein (hs-CRP) in the community-dwelling elderly aged 80 years or older.Methods: One hundred and seventy-nine community-dwelling elderly aged 65 years or older (78 ± 6 years, 69 men and 113 women) participated in this study. High-resolution B-mode ultrasonography was performed on the common carotid arteries. Intima-media thickness (IMT) was measured using automatic measuring system and compared with standardized examinations included blood pressure, body mass index, hemoglobin-A1c, cholesterol, creatinine, uric acid, fibrinogen and hs-CRP.Results: Subjects were divided into two age groups: young-old aged 65–79 years (113 subjects, 74 ± 3 years) and old-old aged 80 years or older (66 subjects, 84 ± 3 years). The maximum (max) IMT was significantly increased in the old-old compared to that of the young-old (1.7 ± 1.0 vs 1.4 ± 0.6 mm; P = 0.02). Multivariate analysis showed that hs-CRP was the strongest predictor of thickened max IMT in the young-old (P = 0.022). However, it was not the predictor of thickened max IMT in the old-old.Conclusions: Depending on age, hs-CRP may have different meanings in the atherosclerotic process. In particular, the predictive power of hs-CRP as a marker of atherosclerotic process was less significant in subjects aged 80 years or older.
Geriatrics & Gerontology International 08/2006; 6(3):186 - 193.
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Nippon Ronen Igakkai Zasshi Japanese Journal of Geriatrics 04/2006; 43(2):175-8.
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Yoshihisa Matsumura, Jun Takata,
Hiroaki Kitaoka,
Toru Kubo,
Yuichi Baba,
Eri Hoshikawa,
Tomoyuki Hamada,
Makoto Okawa,
Nobuhiko Hitomi,
Kyoko Sato,
Naohito Yamasaki,
Toshikazu Yabe,
Takashi Furuno,
Masanori Nishinaga,
Yoshinori Doi
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ABSTRACT: Because of their favorable prognostic effects, angiotensin converting enzyme inhibitors (ACEI), angiotensin II receptor blockers (ARB) and beta blockers have become background therapy in dilated cardiomyopathy (DCM). However, there are few reports concerning the long-term prognosis of Japanese patients with DCM in relation to these treatments.
One hundred and fifty patients with DCM were divided into 2 groups: group A (n=46) (diagnosis: 1982-1989) and group B (n=104) (diagnosis: 1990-2002). During follow-up period of 6.9+/-4.8 years, 62 patients died and 1 patient had a heart transplant. The survival rate at 5 and 10 years was 60.9% and 34.8%, respectively, in group A patients, and 80.9% and 65.3%, respectively, in group B patients (p=0.0079). In group A patients, ACEI/ARB or beta blockers were less frequently used (p<0.0001), whereas antiarrhythmics (class Ia or Ib) were more often used (p<0.0001). The patients treated with ACEI/ARB and beta blockers showed a better survival rate than those without (p<0.0001). The patients with antiarrhythmics showed a worse survival rate than those without (p<0.0001).
The prognosis of Japanese patients with DCM has significantly improved over the past 20 years. This improvement may be explained partly through the increased use of ACEI/ARB and beta blockers and a declining use of antiarrhythmics.
Circulation Journal 04/2006; 70(4):376-83. · 3.77 Impact Factor
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ABSTRACT: PurposeIt is unclear whether left ventricular (LV) contractile reserve assessed by low-dose dobutamine stress echocardiography (DSE)
can predict the long-term prognosis together with LV functional changes in patients with idiopathic dilated cardiomyopathy
(DCM).
Methods and resultsContractile reserve was determined in 28 patients with DCM, and was then compared with changes in LV fractional shortening
(FS) and cardiac events during a follow-up period of 68 ± 43 months. Nine events (2 sudden deaths, 5 heart failure deaths,
and 2 rehospitalizations for heart failure) were observed. FS at peak dose was lower in patients with events (events group)
than in those without events (no-events group) (20 ± 6 vs. 27 ± 7%; P < 0.05), although there were no differences in FS at baseline between the two groups. FS at follow-up was lower in the events
group than in the no-events group (14 ± 7 vs. 21 ± 8%; P < 0.05). The change in FS during DSE (FS at peak dose/baseline) correlated with the change in FS during the follow-up time
(FS at follow-up/baseline), and it was a predictor of events by multiple regression analysis.
ConclusionsLV contractile reserve assessed by low-dose DSE is a useful marker not only to predict LV functional improvement, but also
to determine the long-term prognosis in patients with DCM.
Journal of Medical Ultrasonics 01/2006; 33(1):17-22. · 0.33 Impact Factor
