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International Heart Journal

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https://www.readbyqxmd.com/read/28077821/ascending-aortic-constriction-promotes-cardiomyocyte-proliferation-in-neonatal-rats
#1
Zhenhua Wang, Sebastian Schmull, Hui Zheng, Jianggui Shan, Rongjiang Zou, Song Xue
Adult heart suffering from increased workload will undergo myocardial hypertrophy, subsequent cardiomyocyte (CM) death, and eventually heart failure. However, the effect of increasing afterload on the neonatal heart remains unknown. We performed ascending aortic constriction (AAC) in neonatal rats 8-12 hours after birth (P0, P indicates postpartum). Seven days after surgery, in vivo heart function was evaluated using cardiac ultrasonography. Haematoxylineosin and Masson staining were used to assess CM diameter and collagen deposition...
January 11, 2017: International Heart Journal
https://www.readbyqxmd.com/read/28077820/acute-coronary-syndrome-demonstrating-plaque-rupture-in-calcified-lesions-visualized-by-optical-frequency-domain-imaging
#2
Yutaka Goryo, Teruyoshi Kume, Yusuke Kobayashi, Hiroshi Okamoto, Ai Kawamura, Kenzo Fukuhara, Terumasa Koyama, Ryotaro Yamada, Koichiro Imai, Yoji Neishi, Shiro Uemura
A 68-year-old female with acute coronary syndrome was transferred to our hospital. Emergency coronary angiography showed 90% stenosis with severe calcification in the proximal right coronary artery (RCA). Intravascular ultrasound (IVUS) images were obtained and showed circumferential heavy calcification without any evidence of plaque rupture. Optical frequency domain imaging (OFDI) images were obtained in the RCA lesion 3 days after the initial coronary angiography. A cavity of plaque rupture in the calcified plaque by using OFDI was observed in the lesion, which could not be recognized by IVUS...
January 11, 2017: International Heart Journal
https://www.readbyqxmd.com/read/28077819/association-between-blood-transfusions-and-12-month-mortality-after-transcatheter-aortic-valve-implantation
#3
Pawel Kleczynski, Artur Dziewierz, Maciej Bagienski, Lukasz Rzeszutko, Danuta Sorysz, Jaroslaw Trebacz, Robert Sobczynski, Marek Tomala, Maciej Stapor, Dariusz Dudek
Blood transfusions are considered as an important predictor of adverse outcome in patients with severe aortic (AS) undergoing transcatheter aortic valve implantation (TAVI). We sought to investigate the association between blood transfusions and mortality after TAVI. We enrolled 101 consecutive patients with severe AS undergoing TAVI. Patients who required transfusion were defined as patients in whom at least one unit of packed red blood cells (PRBCs) was transfused in the perioperative period. Twelve-month outcomes were assessed based on Valve Academic Research Consortium definitions...
January 11, 2017: International Heart Journal
https://www.readbyqxmd.com/read/28077818/enlargement-of-the-excluded-left-atrial-appendage-with-thrombus
#4
Shigeaki Aoyagi, Satoru Tobinaga, Hiroyuki Saisho
We report progressive enlargement of the excluded left atrial appendage (LAA) with a thrombus in a patient who had undergone valve surgery and endocardial suture closure of the LAA previously. Echocardiography and CT detected no communication between the LAA and the left atrium. Magnetic resonance imaging showed the LAA was filled with fresh and old thrombi. Coronary arteriography demonstrated small left coronary artery-LAA fistulae. At surgery, successful exclusion of the LAA was confirmed after removal of the thrombi...
January 11, 2017: International Heart Journal
https://www.readbyqxmd.com/read/28077817/prognostic-significance-of-non-dilated-left-ventricular-size-and-mitral-regurgitation-in-patients-with-dilated-phase-of-hypertrophic-cardiomyopathy
#5
Toru Kubo, Yuichi Baba, Takayoshi Hirota, Katsutoshi Tanioka, Naohito Yamasaki, Yoshinori L Doi, Hiroaki Kitaoka
Although a subtype of hypertrophic cardiomyopathy (HCM), dilated phase of HCM (D-HCM) characterized by left ventricular (LV) systolic dysfunction, has been reported to have a poor prognosis, some patients with D-HCM survive for a relatively long period. The degree of LV dilatation and functional mitral regurgitation (MR) are generally thought to be important predictors of poor prognosis in patients with LV systolic dysfunction. However, there is little information available on the relations among LV size, presence of significant MR, and prognosis in D-HCM patients...
January 11, 2017: International Heart Journal
https://www.readbyqxmd.com/read/28077816/incidence-of-atrial-tachyarrhythmias-in-patients-with-early-repolarization-syndrome
#6
Ki Won Hwang, Gi-Byoung Nam, Junhee Han, Yong Giun Kim, Hyung Oh Choi, Jun Kim, Kee-Joon Choi, You-Ho Kim
Atrial tachyarrhythmias (ATAs) occur in a significant proportion of Brugada syndrome (BrS) patients and are often an important cause of inappropriate shocks. The aim of this retrospective study was to evaluate the incidence of ATAs and ATA-induced inappropriate shocks in early repolarization syndrome (ERS) patients as compared to BrS patients.We analyzed data from 20 consecutive patients who were diagnosed with ERS and compared them with patients diagnosed with BrS (n = 31). Clinical and ICD interrogation data were collected and analyzed for all events with ICD shocks...
January 11, 2017: International Heart Journal
https://www.readbyqxmd.com/read/28077815/the-j-wave-as-a-predictor-of-life-threatening-arrhythmia-in-icd-patients
#7
Naruya Ishizue, Shinichi Niwano, Hidehira Fukaya, Hironori Nakamura, Tazuru Igarashi, Tamami Fujiishi, Jun Oikawa, Jun Kishihara, Masami Murakami, Hiroe Niwano, Junya Ako
The J-wave has been reported to be associated with life-threatening ventricular arrhythmia. However, the clinical implication of the J-wave is still unclear in patients with an implantable cardioverter defibrillator (ICD).The study population consisted of 170 ICD patients (age, 56 ± 16 years, 79.4% male) treated at Kitasato University Hospital between 2003 and 2014. Ventricular fibrillation (VF) and ventricular tachycardia (VT) events were documented via ICD interrogation, and the patients were divided into 3 groups: 1) VF event group, 2) VT event group, and 3) No-event group...
January 11, 2017: International Heart Journal
https://www.readbyqxmd.com/read/28003625/gene-targeted-analysis-of-clinically-diagnosed-long-qt-russian-families
#8
Paolo Enrico Maltese, Nina Orlova, Eugenia Krasikova, Elena Emelyanchik, Anna Cheremisina, Alina Kuscaeva, Alla Salmina, Roberta Miotto, Alice Bonizzato, Giulia Guerri, Monia Zuntini, Svetlana Nicoulina, Matteo Bertelli
Long QT syndrome (LQTS) has great genetic heterogeneity: more than 500 mutations have been described in several genes. Despite many advances, a genetic diagnosis still cannot be established in 25-30% of patients. The aim of the present study was to perform genetic evaluation in 9 Russian families with LQTS; here we report the results of 4 positive probands and their relatives (a total of 16 individuals). All subjects underwent clinical examination, 12-lead ECG, and Holter monitoring. Genetic analysis of the 14 genes mainly involved in LQTS was performed using a next-generation sequencing approach...
December 21, 2016: International Heart Journal
https://www.readbyqxmd.com/read/27829645/an-ep4-receptor-agonist-inhibits-cardiac-fibrosis-through-activation-of-pka-signaling-in-hypertrophied-heart
#9
Qi Wang, Toru Oka, Kiyoshi Yamagami, Jong-Kook Lee, Hiroshi Akazawa, Atsuhiko T Naito, Taku Yasui, Takamaru Ishizu, Yoshikazu Nakaoka, Yasushi Sakata, Issei Komuro
Cardiac fibrosis is a pathological feature of myocardium of failing heart and plays causative roles in arrhythmia and cardiac dysfunction, but its regulatory mechanisms remain largely elusive. In this study, we investigated the effects of the novel EP4 receptor agonist ONO-0260164 on cardiac fibrosis in hypertrophied heart and explored the regulatory mechanisms in cardiac fibroblasts.In a mouse model of cardiac hypertrophy generated by transverse aortic constriction (TAC), ONO-0260164 treatment significantly prevented systolic dysfunction and progression of myocardial fibrosis at 5 weeks after TAC...
November 9, 2016: International Heart Journal
https://www.readbyqxmd.com/read/27818476/congenitally-corrected-transposition-of-the-great-arteries-and-situs-inversus-in-an-octogenarian-with-systemic-right-ventricular-failure
#10
Mikio Shiba, Shigefumi Fukui, Hideo Ohuchi, Jin Ueda, Akihiro Tsuji, Yoshiaki Morita, Aya Miyazaki, Takeshi Ogo, Satoshi Yasuda, Isao Shiraishi, Norifumi Nakanishi
Systemic right ventricular (RV) failure in patients with congenitally corrected transposition of the great arteries (ccTGA), a major cause of mortality in the long-term follow-up, is usually induced by concomitant severe morphologically tricuspid regurgitation (TR) with/without Ebstein's anomaly or progressive conduction tissue disturbances. However, whether or not myocardial fibrosis is a common cause of systemic RV failure in patients with ccTGA remains unclear. Here, we describe an 82-year-old man who had been diagnosed previously as having uncomplicated ccTGA and situs inversus and recently developed systemic RV failure, which was neither associated with severe TR nor advanced conduction tissue abnormalities...
November 4, 2016: International Heart Journal
https://www.readbyqxmd.com/read/27829644/intra-plaque-hematoma-and-minor-intimal-disruption-detected-by-optical-frequency-domain-imaging-in-a-case-of-acute-coronary-syndrome
#11
Motoki Fukutomi, Nobuhiko Ogata, Masataka Nakano, Kazuomi Kario
A 39-year-old man exhibiting unstable angina was admitted to our hospital, and urgent coronary angiography revealed stenosis of the proximal left anterior descending coronary artery (LAD). A drug eluting stent was implanted at this site, and the patient was discharged uneventfully on the 3rd hospital day. Optical frequency-domain imaging (OFDI) was successful in detecting an intra-plaque hematoma, minor intimal disruption, and thrombus at the culprit lesion in this patient. These observations suggest that this hematoma might be the result of subsequent blood filling into the ruptured plaque through this minor intimal disruption...
December 2, 2016: International Heart Journal
https://www.readbyqxmd.com/read/27829643/determinants-of-in-hospital-death-in-acute-myocardial-infarction-with-triple-vessel-disease
#12
Yusuke Watanabe, Kenichi Sakakura, Yousuke Taniguchi, Yusuke Adachi, Masamitsu Noguchi, Naoyuki Akashi, Hiroshi Wada, Shin-Ichi Momomura, Hideo Fujita
Compared to acute myocardial infarction (AMI) with single vessel disease (SVD) or double vessel disease (DVD), AMI with triple vessel disease (TVD) is associated with higher mortality. The aim of this study was to identify the determinants of in-hospital death in AMI with TVD. We identified AMI patients with TVD in our tertiary medical center between January 2009 and December 2014. Baseline patient characteristics including laboratory data, echocardiograms, and coronary angiograms were collected from our hospital records...
December 2, 2016: International Heart Journal
https://www.readbyqxmd.com/read/27829642/reversible-motor-paralysis-and-early-cardiac-rehabilitation-in-patients-with-advanced-heart-failure-receiving-left-ventricular-assist-device-therapy
#13
Rie Amao, Teruhiko Imamura, Yasuo Nakahara, Satoko Noguchi, Osamu Kinoshita, Haruo Yamauchi, Minoru Ono, Nobuhiko Haga
Advanced heart failure (HF) is sometimes complicated with brain impairment because of a microthrombosis caused by decreased left ventricular contraction or reduced brain circulation. Some patients may recover after left ventricular assist device (LVAD) implantation. However, little is known about the perioperative therapeutic strategy in patients suffering from such complications, particularly from a cardiac rehabilitation viewpoint. We report on a 58-year-old male patient with a previous history of poliomyelitis and a light paralysis in the left upper extremity, who suffered left hemiplegia with no evidence of stroke after hemodynamic deterioration...
December 2, 2016: International Heart Journal
https://www.readbyqxmd.com/read/27829641/arterial-stiffness-is-significantly-associated-with-left-ventricular-diastolic-dysfunction-in-patients-with-cardiovascular-disease
#14
Takayuki Namba, Nobuyuki Masaki, Yuki Matsuo, Atsushi Sato, Toyokazu Kimura, Shunpei Horii, Risako Yasuda, Hirotaka Yada, Akio Kawamura, Bonpei Takase, Takeshi Adachi
Left ventricular (LV) diastolic dysfunction is considered the main cause of heart failure with preserved ejection fraction (HFpEF). There have been few reports on the correlation between LV diastolic dysfunction and arterial stiffness in patients with clinical cardiovascular disease.This cross-sectional study enrolled 100 patients (67 men, 33 women; mean age, 70 years). All participants were diagnosed with cardiovascular disease. A total of 89 (89%) patients had coronary artery disease or HF. Patients with reduced EF and valvular disease were excluded...
December 2, 2016: International Heart Journal
https://www.readbyqxmd.com/read/27829640/experiences-with-aggressive-cardiac-rehabilitation-in-pediatric-patients-receiving-mechanical-circulatory-supports
#15
Rie Amao, Teruhiko Imamura, Yusuke Sawada, Sachiko Endo, Shinichi Ozaki, Kenichi Okamura, Akihiro Masuzawa, Tetsuhiro Takaoka, Yasutaka Hirata, Takahiro Shindo, Minoru Ono, Nobuhiko Haga
Although some patients with fulminant myocarditis can be rescued owing to the improvements in mechanical circulatory support therapy, there are few reports providing evidence of cardiac rehabilitation during mechanical circulatory supports, particularly among pediatric patients. We treated two pediatric patients who underwent aggressive cardiac rehabilitation during mechanical support. Five days after the initiation of extracorporeal membrane oxygenation therapy aggressive cardiac rehabilitation was started in a 10-year-old girl with fulminant myocarditis...
December 2, 2016: International Heart Journal
https://www.readbyqxmd.com/read/27829639/a-meta-analysis-of-the-relationship-between-maternal-folic-acid-supplementation-and-the-risk-of-congenital-heart-defects
#16
Aiping Xu, Xian Cao, Ying Lu, Haibo Li, Qingwen Zhu, Xiaobo Chen, Hongru Jiang, Xiaoqin Li
Controversial opinions exist with respect to the relationship between maternal folic acid (FA) supplementation and birth prevalence of congenital heart defects (CHDs).Eligible articles were retrieved by searching databases, including PubMed, Cochrane library, EMBASE, CNKI, and WanFang up to September 2015. A meta-analysis was performed to evaluate the effects of FA on CHDs. Odds ratios (ORs) and 95% confidence interval (CIs) were merged using STATA 12.0. Meta-regression analysis was used to explore the possible sources of heterogeneity...
December 2, 2016: International Heart Journal
https://www.readbyqxmd.com/read/27829638/comparison-of-percutaneous-coronary-intervention-versus-coronary-artery-bypass-graft-in-aged-patients-with-unprotected-left-main-artery-lesions
#17
Zhonghai Wei, Jun Xie, Kun Wang, Lina Kang, Qing Dai, Jian Bai, Biao Xu
There is still much debate about revascularization strategies in aged patients with unprotected left main coronary artery (UPLM) lesions. This study compared the outcomes of percutaneous coronary intervention (PCI) versus coronary artery bypass graft (CABG) in this population.A total of 126 patients older than 60 years of age with LM lesions who underwent revascularization in our hospital from January 2012 to December 2013 were followed up for an average of 15.2 months. The cumulative incidence of major adverse cardiac and cerebral events (MACCE) was estimated by Kaplan-Meier plots...
December 2, 2016: International Heart Journal
https://www.readbyqxmd.com/read/27818486/neuromuscular-electrical-stimulation-in-patients-with-acute-myocardial-infarction
#18
Tomoko Nakao, Hiroyuki Morita
No abstract text is available yet for this article.
December 2, 2016: International Heart Journal
https://www.readbyqxmd.com/read/27818485/can-xanthine-oxidase-inhibitors-improve-cardiac-function-in-patients-with-chronic-heart-failure
#19
Shinobu Sugihara, Kazuhiro Yamamoto, Ichiro Hisatome
No abstract text is available yet for this article.
December 2, 2016: International Heart Journal
https://www.readbyqxmd.com/read/27818484/gut-microbiota-and-coronary-artery-disease
#20
Tomoya Yamashita, Takuo Emoto, Naoto Sasaki, Ken-Ichi Hirata
Gut microbiota have been attracting increased attention in many fields of medicine recently. We can perform a comprehensive analysis of gut microbiota using next-generation sequencing techniques together with bioinformatics technology, which expands our knowledge of a large ecosystem consisting of a host and gut microbiota. We summarize some reports about the correlations between gut microbiota and metabolic disorders, particularly atherosclerosis, and discuss future directions for the diagnostic or therapeutic potential of gut microbiota...
December 2, 2016: International Heart Journal
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