Search results for: Shota Fukuda

Items from 1 to 20 out of 47 results

article

Comparison between characteristics of severe and very severe aortic stenosis

Hidekazu Tanaka, Yong‐Jin Kim, Seung‐Ji Park, Seung Woo Park, more

Objectives Patients with very severe aortic stenosis (AS) have extremely poor clinical outcomes even if they are asymptomatic compared to those with severe AS, but the clinical and echocardiographic characteristics of patients with very severe AS remain unclear. Methods The Asian Valve Registry is a prospective, multicenter, multinational registry for the study and identification of the incidence,...

article

Relationships Between Periventricular Epicardial Adipose Tissue Accumulation, Coronary Microcirculation, and Left Ventricular Diastolic Dysfunction

Koki Nakanishi, Shota Fukuda, Atsushi Tanaka, Kenichiro Otsuka, more

Canadian Journal of Cardiology > 2017 > 33 > 11 > 1489-1497

Obesity is related to left ventricular (LV) diastolic dysfunction, although its pathophysiological mechanism remains unclear. Epicardial adipose tissue (EAT) is an ectopic fat with paracrine effects on coronary circulation and myocardium. We hypothesized that left ventricle–specific (periventricular) EAT may deteriorate diastolic function by impairing coronary microcirculation.In protocol 1, 74 patients...

article

Impact of additional intracoronary nicorandil administration during fractional flow reserve measurement with intravenous adenosine 5′-triphosphate infusion

Hironori Takami, Shinjo Sonoda, Yoshitaka Muraoka, Yoshinori Sanuki, more

Journal of Cardiology > 2017 > 69 > 1 > 119-124

Fractional flow reserve (FFR) is a useful index for determining the functional severity of epicardial coronary artery stenosis as an invasive physiological method. Although intravenous adenosine 5′-triphosphate (ATP) is generally used as a hyperemic agent for FFR measurement in Japan, there are some concerns about the variability of FFR measurement (short half-life, effect of caffeine, cyclic change)...

article

Detection of Deep Venous Thrombosis Using a Pocket-Size Ultrasound Examination Device

Koki Nakanishi, Shota Fukuda, Hajime Yamashita, Takuto Uetsuhara, more

JACC: Cardiovascular Imaging > 2016 > 9 > 7 > 897-898

article

Monitoring Ionizing Radiation Exposure for Cardiotoxic Effects of Breast Cancer Treatment

Gillian Murtagh, Zoe Yu, Emily Harrold, Jennie Cooke, more

The American Journal of Cardiology > 2016 > 117 > 10 > 1678-1682

Serial assessments of left ventricular ejection fraction (LVEF) are customary in patients with breast cancer receiving trastuzumab. Radionuclide angiography (RNA) is often used; however, a typical monitoring schedule could include 5 scans in a year. We evaluated the proportion of imaging-related ionizing radiation attributable to RNA in 115 patients with breast cancer, from 3 medical centers in the...

article

The utility of fully automated real-time three-dimensional echocardiography in the evaluation of left ventricular diastolic function

Koki Nakanishi, Shota Fukuda, Hiroyuki Watanabe, Yoshihiro Seo, more

Journal of Cardiology > 2015 > 66 > 1 > 50-56

A novel real-time three-dimensional echocardiography (RT3DE) system allows fully automated quantification of the left ventricular (LV) volume throughout a cardiac cycle. This study aimed to investigate whether an LV time–volume curve, obtained using fully automated RT3DE, is useful in the evaluation of LV diastolic function.First, 15 patients underwent simultaneous standard two-dimensional echocardiography...

article

Left atrial appendage thrombus in a patient with sinus rhythm and left atrial appendage dysfunction

Akemi Nakazono, Yasushi Oginosawa, Masaaki Takeuchi, Taichi Watabe, more

Journal of Echocardiography > 2015 > 13 > 4 > 157-158

article

Different characteristics of heart failure due to pump failure and bradyarrhythmia

Mai Iwataki, Yun-Jeong Kim, Byung-Joo Sun, Jeong-Yoon Jang, more

Journal of Echocardiography > 2015 > 13 > 1 > 27-34

Background Heart failure (HF) can be caused by left ventricular (LV) pump failure as well as by bradyarrhythmias. Hemodynamic differences between HF by LV pump failure and that by bradyarrhythmia have not been fully investigated. We hypothesized that HF by LV pump failure could be associated with both reduced cardiac output (CO) and increased LV filling pressure due to associated LV diastolic...

article

Comparison of effects of sitagliptin and voglibose on left ventricular diastolic dysfunction in patients with type 2 diabetes: results of the 3D trial

Hiroki Oe, Kazufumi Nakamura, Hajime Kihara, Kenei Shimada, more

Cardiovascular Diabetology > 2015 > 14 > 1 > 1-13

Background Left ventricular (LV) diastolic dysfunction is frequently observed in patients with type 2 diabetes. Dipeptidyl peptidase-4 inhibitor (DPP-4i) attenuates postprandial hyperglycemia (PPH) and may have cardio-protective effects. It remains unclear whether DPP-4i improves LV diastolic function in patients with type 2 diabetes, and, if so, it is attributable to the attenuation of PPH or to...

article

Persistent epicardial adipose tissue accumulation is associated with coronary plaque vulnerability and future acute coronary syndrome in non-obese subjects with coronary artery disease

Koki Nakanishi, Shota Fukuda, Atsushi Tanaka, Kenichiro Otsuka, more

Atherosclerosis > 2014 > 237 > 1 > 353-360

Objective. Epicardial adipose tissue (EAT) is recognized as a novel risk factor for coronary artery disease (CAD), and its contribution is thought to be stronger in non-obese patients than in obese patients. However, the prognostic impact of the progression of EAT accumulation after comprehensive management for atherosclerotic risk factors remains unclear. This study aimed to investigate whether an...

article

Combination of E/A ≤0.75 and Deceleration Time >140 ms and E/ε′ ≥10

Hiroshi Kuwaki, Masaaki Takeuchi, Victor Chien-Chia Wu, Kyoko Otani, more

JACC: Cardiovascular Imaging > 2014 > 7 > 8 > 749-758

This study sought to examine left atrial (LA) mechanics and the prognostic impact of patients with echocardiographic findings of E/A ratio ≤0.75, deceleration time (DcT) of mitral E-wave >140 ms, but E/ε′ ≥10.Traditional diastolic dysfunction (DD) grading system could not classify every patient into a specific group. We considered the group of patients with E/A ≤0.75, DcT >140 ms, but E/ε′ ≥10...

article

DPP-4 inhibitor and alpha-glucosidase inhibitor equally improve endothelial function in patients with type 2 diabetes: EDGE study

Kazufumi Nakamura, Hiroki Oe, Hajime Kihara, Kenei Shimada, more

Cardiovascular Diabetology > 2014 > 13 > 1 > 1-10

Background Alpha glucosidase inhibitor (GI) attenuates postprandial hyperglycemia (PPH) and reduces the risk of cardiovascular events in patients with impaired glucose tolerance or type 2 diabetes. Dipeptidyl peptidase 4 (DPP-4) inhibitors also attenuate PPH. PPH is one of the factors leading to endothelial dysfunction which is an early event in the pathogenesis of atherosclerosis. Furthermore, DPP-4...

article

Prognostic Value of Coronary Flow Reserve on Long-Term Cardiovascular Outcomes in Patients With Chronic Kidney Disease

Koki Nakanishi, Shota Fukuda, Kenei Shimada, Chinami Miyazaki, more

The American Journal of Cardiology > 2013 > 112 > 7 > 928-932

Cardiovascular (CV) diseases and chronic kidney disease (CKD) have common predisposing factors that subsequently cause microvascular dysfunction. In the absence of obstructive coronary artery disease, coronary flow reserve (CFR) represents the status of coronary microcirculation. This study aimed to investigate the prognostic importance of impaired CFR, as a marker of microvascular dysfunction, on...

article

Changes in serum cholesterol levels determine future risk of cardiovascular events in patients with acute coronary syndrome in the Japanese Coronary Artery Disease (JCAD) Study

Shota Fukuda, Kenei Shimada, Masatoshi Fujita, Minoru Yoshiyama, more

Journal of Cardiology > 2013 > 61 > 6 > 387-392

Although increased attention is given to assess absolute values of serum cholesterol profiles as optimal markers for preventing future cardiovascular (CV) events, changes in cholesterol profiles also have the potential to be associated with CV disease outcome in Japanese patients with acute coronary syndrome (ACS).From the database of the Japanese Coronary Artery Disease (JCAD) study, 2664 patients...

article

Napkin-Ring Sign on Coronary CT Angiography for the Prediction of Acute Coronary Syndrome

Kenichiro Otsuka, Shota Fukuda, Atsushi Tanaka, Koki Nakanishi, more

JACC: Cardiovascular Imaging > 2013 > 6 > 4 > 448-457

The aim of this study was to determine the predictive value of the napkin-ring sign on coronary computed tomography angiography (CTA) for future acute coronary syndrome (ACS) events in patients with coronary artery disease.Recent studies have reported a close association between the napkin-ring sign on coronary CTA and thin-cap fibroatheroma.The subjects of this prospective study were 895 consecutive...

article

Preliminary observations of passive exercise using whole body periodic acceleration on coronary microcirculation and glucose tolerance in patients with type 2 diabetes

Mikumo Sakaguchi, Shota Fukuda, Kenei Shimada, Yasukatsu Izumi, more

Journal of Cardiology > 2012 > 60 > 4 > 283-287

The whole body periodic acceleration (WBPA) system was recently developed as a passive exercise device by providing increased pulsatile shear stress for improvement of endothelial function. This study aimed to investigate the acute effects of WBPA on coronary microcirculation and glucose tolerance in patients with type 2 diabetes (T2D).The study subjects were 8 patients with T2D who underwent transthoracic...

article

Circadian variation in coronary flow velocity reserve and its relation to α1-sympathetic activity in humans

Shota Fukuda, Kenei Shimada, Kumiko Maeda, Toshihiro Kawasaki, more

International Journal of Cardiology > 2012 > 157 > 2 > 216-220

The circadian change in coronary microvascular function has not been directly assessed in human beings. Recent advances in transthoracic Doppler echocardiography (TTDE) provide noninvasive, physiological assessment of coronary flow velocity reserve (CFVR).This study consisted of 20 young healthy subjects (24±2years, 20 men) who underwent CFVR examinations at 3 different times; early morning (6AM),...

article

Reply

Atsushi Tanaka, Kenei Shimada, Guillermo J. Tearney, Hironori Kitabata, more

Journal of the American College of Cardiology > 2012 > 59 > 11 > 1039

article

Non-obstructive low attenuation coronary plaque predicts three-year acute coronary syndrome events in patients with hypertension: Multidetector computed tomographic study

Koki Nakanishi, Shota Fukuda, Kenei Shimada, Shoichi Ehara, more

Journal of Cardiology > 2012 > 59 > 2 > 167-175

Arterial hypertension is an established risk factor for acute coronary syndrome (ACS). Multidetector computed tomography (MDCT) is an accurate and less invasive technique for assessment of the degree of coronary artery luminal narrowing and characterization of coronary atherosclerosis. We therefore aimed to investigate the predictive power of MDCT for future ACS events and compared with traditional...

article

Comparison of Coronary Microcirculation in Female Nurses After Day-Time Versus Night-Time Shifts

Tomoichiro Kubo, Shota Fukuda, Kumiko Hirata, Kenei Shimada, more

The American Journal of Cardiology > 2011 > 108 > 11 > 1665-1668

Nightshift work, which is known to cause mental stress and disrupt normal biological diurnal rhythms, leads to endothelial dysfunction resulting in increased risk for cardiovascular disease. This study aimed to investigate the acute effect of night-shift work on coronary microcirculation through assessment of coronary flow reserve (CFR) by transthoracic Doppler echocardiography. This study consisted...

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Search results for: Shota Fukuda

Comparison between characteristics of severe and very severe aortic stenosis

Relationships Between Periventricular Epicardial Adipose Tissue Accumulation, Coronary Microcirculation, and Left Ventricular Diastolic Dysfunction

Impact of additional intracoronary nicorandil administration during fractional flow reserve measurement with intravenous adenosine 5′-triphosphate infusion

Detection of Deep Venous Thrombosis Using a Pocket-Size Ultrasound Examination Device

Monitoring Ionizing Radiation Exposure for Cardiotoxic Effects of Breast Cancer Treatment

The utility of fully automated real-time three-dimensional echocardiography in the evaluation of left ventricular diastolic function

Left atrial appendage thrombus in a patient with sinus rhythm and left atrial appendage dysfunction

Different characteristics of heart failure due to pump failure and bradyarrhythmia

Comparison of effects of sitagliptin and voglibose on left ventricular diastolic dysfunction in patients with type 2 diabetes: results of the 3D trial

Persistent epicardial adipose tissue accumulation is associated with coronary plaque vulnerability and future acute coronary syndrome in non-obese subjects with coronary artery disease

Combination of E/A ≤0.75 and Deceleration Time >140 ms and E/ε′ ≥10

DPP-4 inhibitor and alpha-glucosidase inhibitor equally improve endothelial function in patients with type 2 diabetes: EDGE study

Prognostic Value of Coronary Flow Reserve on Long-Term Cardiovascular Outcomes in Patients With Chronic Kidney Disease

Changes in serum cholesterol levels determine future risk of cardiovascular events in patients with acute coronary syndrome in the Japanese Coronary Artery Disease (JCAD) Study

Napkin-Ring Sign on Coronary CT Angiography for the Prediction of Acute Coronary Syndrome

Preliminary observations of passive exercise using whole body periodic acceleration on coronary microcirculation and glucose tolerance in patients with type 2 diabetes

Circadian variation in coronary flow velocity reserve and its relation to α1-sympathetic activity in humans

Reply

Non-obstructive low attenuation coronary plaque predicts three-year acute coronary syndrome events in patients with hypertension: Multidetector computed tomographic study

Comparison of Coronary Microcirculation in Female Nurses After Day-Time Versus Night-Time Shifts

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