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Heart and Vessels

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https://www.readbyqxmd.com/read/28527022/comparison-of-echocardiographic-parameters-to-assess-right-ventricular-function-in-pulmonary-hypertension
#1
Hirohisa Amano, Shichiro Abe, Suguru Hirose, Ryutaro Waku, Taiki Masuyama, Masashi Sakuma, Shigeru Toyoda, Isao Taguchi, Teruo Inoue, Chuwa Tei
Although measurement of right ventricular ejection fraction (RVEF) may be relevant for evaluation of therapeutic efficacy and/or prognosis in patients with pulmonary hypertension, RVEF obtained by echocardiography has limited accuracy. In contrast, radionuclide and/or magnetic resonance imaging can measure RVEF more reliably. In this study, we investigated the relationship between RVEF measured by radionuclide angiography and the echocardiographic parameters that are recommended by the American Society of Echocardiography as representative of right heart function...
May 19, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28523371/impact-of-electrocardiogram-screening-during-drug-challenge-test-for-the-prediction-of-t-wave-oversensing-by-a-subcutaneous-implantable-cardioverter-defibrillator-in-patients-with-brugada-syndrome
#2
Tsukasa Kamakura, Mitsuru Wada, Kohei Ishibashi, Yuko Y Inoue, Koji Miyamoto, Hideo Okamura, Satoshi Nagase, Takashi Noda, Takeshi Aiba, Satoshi Yasuda, Kengo Kusano
Screening tests conducted at rest may be inadequate for the prediction of the T-wave oversensing (TWOS) in subcutaneous implantable cardioverter defibrillator (S-ICD) candidates with Brugada syndrome (BrS) because of the dynamic nature of electrocardiogram (ECG) morphology. We evaluated the utility of ECG screening during drug challenge (DC) for prediction of TWOS in BrS patients implanted with an S-ICD. The study enrolled 6 consecutive BrS patients implanted with an S-ICD. In addition to baseline ECG screening, pre-implant screening during DC using a sodium channel blocker was performed in all patients...
May 18, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28516212/anatomical-visualization-of-neural-course-and-distribution-of-anterior-ascending-aortic-plexus
#3
Tomokazu Kawashima, Fumi Sato
The aim of this study was to document the detailed anatomy of neural course and distribution on the anterior ascending aorta, to identify the high and low density areas of the anterior ascending aortic plexus for further understandings in cardiovascular surgery. The embalmed hearts of 42 elderly individuals were submacroscopically and microscopically examined, after excluding any that were macroscopically abnormal. With its origins in the anterior ascending aortic plexus, the right coronary plexus substantially innervated the right coronary artery, the right atrium and ventricle, and the sinus node...
May 17, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28516211/early-endothelialization-associated-with-a-biolimus-a9-bioresorbable-polymer-stent-in-a-porcine-coronary-model
#4
Masayuki Mori, Kenji Sakata, Chiaki Nakanishi, Takuya Nakahashi, Masa-Aki Kawashiri, Kazuaki Yoshioka, Yoh Takuwa, Hirofumi Okada, Jun-Ichiro Yokawa, Masaya Shimojima, Tsuyoshi Yoshimuta, Shohei Yoshida, Masakazu Yamagishi, Kenshi Hayashi
Although Nobori(®), with a bioresorbable polymer and biolimus A9 abluminal coating, has unique characteristics, few data exist regarding endothelialization early after implantation. Fifteen Nobori(®) and 14 control bare-metal stents (S-stent™) were implanted in 12 pigs. Histopathology of stented segments, inflammation, and intimal fibrin content was evaluated on the 2nd and 14th day after implantation. On the 2nd day, endothelial cells were morphologically and immunohistologically confirmed on the surface of both stents, although some inflammatory cells might be involved...
May 17, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28509076/efficacy-of-antihistamines-on-mortality-in-patients-receiving-maintenance-hemodialysis-an-observational-study-using-propensity-score-matching
#5
Kiyotsugu Omae, Masao Yoshikawa, Hiroshi Sakura, Kosaku Nitta, Tetsuya Ogawa
Antihistamines are widely used to treat pruritus in patients receiving hemodialysis. In a previous cross-sectional study, we reported an association between antihistamine use and the absence of eccentric cardiac hypertrophy in patients receiving hemodialysis. Therefore, in this study, we sought to evaluate the efficacy of antihistamines on all-cause and cardiovascular mortality in patients receiving hemodialysis according to our outpatient dialysis database. We used a propensity score matching method. Among the 389 patients receiving hemodialysis according to our database, we extracted those taking antihistamines and matched them with patients not taking antihistamines using propensity scores based on 38 variables...
May 16, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28477098/predictors-of-thrombus-formation-after-percutaneous-left-atrial-appendage-closure-using-the-watchman-device
#6
Hidehiro Kaneko, Michael Neuss, Jens Weissenborn, Christian Butter
Percutaneous left atrial appendage (LAA) closure using the WATCHMAN device is a novel option for prevention of stroke associated with atrial fibrillation. However, device-related thrombus (DRT) formation is a concern after WATCHMAN implantation and the predictors of DRT still remain unclear. We aimed to clarify the predictors of DRT after WATCHMAN implantation by analyzing 78 patients (50 males, 72 ± 8 years, average CHA2DS2-VASc score of 4.3 + 1.8) who had undergone WATCHMAN implantation. WATCHMAN was successfully implanted in all patients and four (5%) developed DRT...
May 5, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28474137/clinical-features-and-predictive-value-of-serum-inflammatory-markers-of-perivascular-involvement-in-immunoglobulin-g4-related-disease
#7
Hideya Yamamoto, Eiji Sugiyama, Masahiro Serikawa, Fuminari Tatsugami, Michiya Yokozaki, Toshiro Kitagawa, Atsushi Senoo, Yumiko Kubo Nakamoto, Kazuo Awai, Kazuaki Chayama, Yasuki Kihara
Vascular and/or perivascular involvements of sclerotic inflammation (perivasculitis) are a complication of immunoglobulin G4-related disease (IgG4-RD). We sought to examine clinical manifestations of perivasculitis by computed tomography (CT) in patients with elevated serum IgG4 levels, and then to evaluate some potential predictors of perivasculitis in definite IgG4-RD patients. From a database of patients with serum IgG4 measurements, we selected 81 patients with elevated serum IgG4 levels (≥135 mg/dl)...
May 4, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28474136/peri-interventional-neurological-complication-rates-in-patients-undergoing-carotid-artery-stenting-depend-on-the-side-of-the-stenosis-treated
#8
Kammler Juergen, Blessberger Hermann, Lichtenauer Michael, Lambert Thomas, Kellermair Joerg, Nahler Alexander, Schwarz Stefan, Reiter Christian, Grund Michael, Kypta Alexander, Steinwender Clemens
CAS has emerged as an alternative to carotid endarterectomy for the treatment of significant carotid artery stenosis. We investigated if the side of the stenosis treated has an influence on the neurological outcome of our patients. CAS was performed in 1124 patients at our center. The left carotid artery (group L) was intervened in 557 and the right carotid artery (group R) in 567 patients. Data of both patient groups were analyzed with respect to the total rate of peri-interventional ischemic cerebral events, defined as transient ischemic attacks, minor and major strokes, respectively...
May 4, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28466410/the-distribution-of-calcified-nodule-and-plaque-rupture-in-patients-with-peripheral-artery-disease-an-intravascular-ultrasound-analysis
#9
Tetsuo Horimatsu, Kenichi Fujii, Masashi Fukunaga, Kojiro Miki, Machiko Nishimura, Yoshiro Naito, Masahiko Shibuya, Takahiro Imanaka, Kenji Kawai, Hiroto Tamaru, Akinori Sumiyoshi, Ten Saita, Tohru Masuyama, Masaharu Ishihara
In addition to plaque rupture (PR), calcified nodule (CN) may also have the potential to develop into arterial thrombus in the peripheral arteries. This study evaluated the distribution of plaque ruptures and calcified nodules in the peripheral arteries and their impact on the outcome of endovascular therapy (EVT). Consecutive 159 patients who underwent EVT with intravascular ultrasound guidance were enrolled. The position of CNs and PRs were assigned to any of common iliac artery, external iliac artery, common femoral artery, and superficial femoral artery...
May 2, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28466409/effects-of-pitavastatin-on-walking-capacity-and-cd34-133-cell-number-in-patients-with-peripheral-artery-disease
#10
Kenshiro Arao, Takanori Yasu, Yasuhiro Endo, Toshikazu Funazaki, Yoshimi Ota, Kazunori Shimada, Eiichi Tokutake, Naoki Naito, Bonpei Takase, Minoru Wake, Nahoko Ikeda, Yasuto Horie, Hiroyuki Sugimura, Shin-Ichi Momomura, Masanobu Kawakami
This multi-center prospective non-randomized comparative study investigated the effects of pitavastatin in patients with peripheral artery disease (PAD) in terms of exercise tolerance capacities and peripheral CD34(+)/133(+) cell numbers. At baseline, a peripheral blood test was administered to 75 patients with PAD, along with a treadmill exercise test using the Skinner-Gardner protocol to measure asymptomatic walking distance (AWD) and maximum walking distance (MWD). Each patient was assigned to a 6-month pitavastatin treatment group (n = 53) or a control group (n = 22), according to the patient's preference...
May 2, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28466408/incidence-and-predictors-of-silent-cerebral-thromboembolic-lesions-after-catheter-ablation-for-atrial-fibrillation-in-patients-treated-with-direct-oral-anticoagulants
#11
Atsushi Doi, Masahiko Takagi, Jun Kakihara, Yusuke Hayashi, Hiroaki Tatsumi, Kohei Fujimoto, Kenichi Sugioka, Minoru Yoshiyama
There are few reports about the incidence and predictors of silent cerebral thromboembolic lesions (SCLs) after atrial fibrillation (AF) ablation in patients treated with direct oral anticoagulants (DOACs). The purpose of this study is to evaluate the incidence and predictors of SCLs after AF ablation with cerebral magnetic resonance imaging (C-MRI) in patients treated with DOACs. We enrolled 117 consecutive patients who underwent first AF ablation and received DOACs, including apixaban, dabigatran, edoxaban, and rivaroxaban...
May 2, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28451835/significance-of-sequential-cardiac-rehabilitation-program-through-inter-hospital-cooperation-between-acute-care-and-rehabilitation-hospitals-in-elderly-patients-after-cardiac-surgery-in-japan
#12
Tomoyuki Morisawa, Katsuhiro Ueno, Yuko Fukuda, Naoto Kanazawa, Hiroshi Kawaguchi, Rikito Zaiki, Hiroaki Fuzisaki, Haruka Yoshioka, Maki Sasaki, Kentaro Iwata, Tadaaki Koyama, Takeshi Kitai, Yutaka Furukawa, Tetsuya Takahashi
This study is to evaluate the impact of cooperation between acute care hospital and rehabilitation hospital on physical function, exercise tolerance, activities of daily living (ADL), health-related quality of life (HR-QOL), and psychological function in heart disease patients undergoing cardiac rehabilitation. Among patients undergoing concurrent medical treatment and cardiac rehabilitation starting early in acute care hospitalization, we selected 30 patients who required continued cardiac rehabilitation in rehabilitation hospitals as subjects...
April 27, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28451834/penetration-rate-of-the-placement-of-a-drug-eluting-stent-for-the-treatment-of-superficial-femoral-artery-lesions-in-japan
#13
Shinsuke Mori, Keisuke Hirano, Yasutaka Yamauchi, Eijiro Hayashi, Tatsuki Doijiri, Takeshi Takamura, Atsuo Maeda, Jun Okuda, Koichi Mizuno, Yuko Onishi, Taku Iwaki, Kengo Tsukahara, Norihiko Shinozaki, Hiroshi Araki, Ken Kongoji, Teruyasu Sugano, Akira Miyamoto, Ichiro Michishita
Stent placement for treating superficial femoral artery (SFA) lesions has been approved. The Zilver PTX stent, a drug-eluting stent (DES) for treating SFA lesions, has been available in Japan since 2012. However, the penetration rate of this DES has not yet been reported. This prospective multicenter registry study enrolled 314 patients (354 limbs) to be treated by stent placement in 2014 (UMIN000011551). The primary endpoint was the measurement of the penetration rate of the DES. The secondary endpoints were measuring the freedom from restenosis, freedom from target lesion revascularization (TLR), freedom from major adverse limb event (MALE), and the survival rate at 12 months postoperatively...
April 27, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28444501/validation-of-numerical-simulation-methods-in-aortic-arch-using-4d-flow-mri
#14
Shohei Miyazaki, Keiichi Itatani, Toyoki Furusawa, Teruyasu Nishino, Masataka Sugiyama, Yasuo Takehara, Satoshi Yasukochi
Computational fluid dynamics (CFD) are the gold standard in studying blood flow dynamics. However, CFD results are dependent on the boundary conditions and the computation model. The purpose of this study was to validate CFD methods using comparison with actual measurements of the blood flow vector obtained with four-dimensional (4D) flow magnetic resonance imaging (MRI). 4D Flow MRI was performed on a healthy adult and a child with double-aortic arch. The aortic lumen was segmented to visualize the blood flow...
April 25, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28432385/bioresorbable-vascular-scaffolds-in-coronary-chronic-total-occlusions-revascularization-safety-assessment-related-to-struts-coverage-and-apposition-in-6-month-oct-follow-up
#15
Rosa Alba Abellas-Sequeiros, Raymundo Ocaranza-Sanchez, Ramiro Trillo-Nouche, Carlos Gonzalez-Juanatey, Jose Ramon Gonzalez-Juanatey
Beneficial properties of bioresorbable vascular scaffolds (BVS) regarding to vasomotility restoration and no caging of the vessel make them attractive devices in chronic total occlusions (CTO) revascularization. However, more evidence is needed attending to their use in this specific setting. We aim to determine feasibility and safety of BVS use in CTO revascularization attending to struts coverage and apposition, as well as re-stenosis and stent thrombosis (ST) rates. 29 BVS were deployed in 9 CTO lesions revascularization (mean J-CTO score ≥3) with an acute procedural success rate of 100%...
April 21, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28429111/impact-of-serum-albumin-levels-on-long-term-outcomes-in-patients-undergoing-percutaneous-coronary-intervention
#16
Hideki Wada, Tomotaka Dohi, Katsumi Miyauchi, Jun Shitara, Hirohisa Endo, Shinichiro Doi, Ryo Naito, Hirokazu Konishi, Shuta Tsuboi, Manabu Ogita, Takatoshi Kasai, Shinya Okazaki, Kikuo Isoda, Satoru Suwa, Hiroyuki Daida
Epidemiological studies have demonstrated an association between low serum albumin levels and both coronary artery disease (CAD) and mortality. However, the long-term clinical impact of low serum albumin level in patients with CAD undergoing percutaneous coronary intervention (PCI) has not yet been fully investigated. We studied 2860 all-comer patients with CAD who underwent their first PCI and had data available for pre-procedural serum albumin between 2000 and 2011. Patients were assigned to tertiles based on pre-procedural albumin levels...
April 20, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28401352/randomized-comparison-between-provisional-and-routine-kissing-balloon-technique-after-main-vessel-crossover-stenting-for-coronary-bifurcation-lesions
#17
Masahiro Yamawaki, Masaki Fujita, Shinya Sasaki, Masanori Tsurugida, Mamoru Nanasato, Motoharu Araki, Keisuke Hirano, Yoshiaki Ito, Reiko Tsukahara, Toshiya Muramatsu
We compared the myocardial ischemic burden of provisional and routine final kissing-balloon inflation (FKI) with the 1-stent strategy using a second-generation drug-eluting stent for coronary bifurcation lesions (CBL). There are no established guidelines for side branch (SB) intervention after main vessel stenting. In total, 113 CBL patients were randomized to receive different SB intervention strategies: provisional-FKI group (n = 57; FKI only when SB flow was TIMI <3) and routine-FKI group (n = 56; mandatory FKI with aggressive treatment until SB-residual stenosis <50%)...
April 11, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28396938/pravastatin-improves-postprandial-endothelial-dysfunction-and-hemorheological-deterioration-in-patients-with-effort-angina-pectoris
#18
Tomio Umemoto, Takanori Yasu, Kenshiro Arao, Nahoko Ikeda, Yasuto Horie, Hiroyuki Sugimura, Masanobu Kawakami, Hideo Fujita, Shin-Ichi Momomura
Postprandial hypertriglyceridemia and hyperglycemia may promote endothelial and hemorheological dysfunction. The present study investigated the effects of pravastatin on endothelial function and hemorheology in patients with stable angina pectoris (AP) before and after eating a test meal. We recruited 26 patients with stable AP who had impaired glucose tolerance and mild dyslipidemia and six healthy men as controls to assess endothelial function and hemorheological behavior. In each group, we measured forearm blood flow (FBF) during post-ischemic reactive hyperemia and obtained blood samples before and 2 h after the test meal...
April 10, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28393273/age-dependent-development-of-left-ventricular-wall-thickness-in-type-2-diabetic-db-db-mice-is-associated-with-elevated-low-density-lipoprotein-and-triglyceride-serum-levels
#19
Phiwayinkosi V Dludla, M Faadiel Essop, Kwazi B Gabuza, Christo J F Muller, Johan Louw, Rabia Johnson
Diabetic cardiomyopathy (DCM) is a disease of heart muscle that remains one of the leading causes of death in diabetic individuals. Shifts in substrate preference resulting in aberrant serum lipid content and enlarged left ventricular wall thickness are well-established characteristics associated with the development of DCM. As underlying mechanisms driving the onset of the DCM remain relatively unclear, this study sought to characterize age-dependent development of left ventricular (LV) wall thickness in diabetic (db/db) mice...
April 9, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28389690/energy-dynamics-of-the-intraventricular-vortex-after-mitral-valve-surgery
#20
Kouki Nakashima, Keiichi Itatani, Tadashi Kitamura, Norihiko Oka, Tetsuya Horai, Shohei Miyazaki, Masaki Nie, Kagami Miyaji
Mitral valve morphology after mitral valve surgery affects postoperative intraventricular flow patterns and long-term cardiac performance. We visualized ventricular flow by echocardiography vector flow mapping (VFM) to reveal the impact of different mitral valve procedures. Eleven cases of mechanical mitral valve replacement (nine in the anti-anatomical and two in the anatomical position), three bioprosthetic mitral valve replacements, and four mitral valve repairs were evaluated. The mean age at the procedure was 57...
April 7, 2017: Heart and Vessels
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