Abstract:
BACKGROUND:The determinants of adult congenital heart disease (ACHD) research output are only partially understood. The heterogeneity of ACHD naturally calls for collaborative work; however, limited information exists on the impact of collaboration on academic performance. We aimed to examine the global topology of ACHD research, distribution of research collaboration and its association with cumulative research output. METHODS AND RESULTS:Based on publications presenting original research between 2005 and 2011, a network analysis was performed quantifying centrality measures and key players in the field of ACHD. In addition, network maps were produced to illustrate the global distribution and interconnected nature of ACHD research. The proportion of collaborative research was 35.6 % overall, with a wide variation between countries (7.1 to 62.8%). The degree of research collaboration, as well as measures of network centrality (betweenness and degree centrality), were statistically associated with cumulative research output independently of national wealth and available workforce. The global ACHD research network was found to be scale-free with a small number of central hubs and a relatively large number of peripheral nodes. In addition, we could identify potentially influential hubs based on cluster analysis and measures of centrality/key player analysis. CONCLUSIONS:Using network analysis methods the current study illustrates the complex and global structures of ACHD research. It suggests that collaboration between research institutions is associated with higher academic output. As a consequence national and international collaboration in ACHD research should be encouraged and the creation of an adequate supporting infrastructure should be further promoted.
journal_name
Int J Cardioljournal_title
International journal of cardiologyauthors
Orwat MI,Kempny A,Bauer U,Gatzoulis MA,Baumgartner H,Diller GPdoi
10.1016/j.ijcard.2015.05.116subject
Has Abstractpub_date
2015-09-15 00:00:00pages
155-62eissn
0167-5273issn
1874-1754pii
S0167-5273(15)01179-1journal_volume
195pub_type
杂志文章abstract::The efficiency and safety of oleanolic acid (OA) and its isomer, ursolic acid (UA) in myocardial ischemia are poorly documented. This study appraised the efficacy of OA and UA in protecting the heart against oxidative damage induced by isoproterenol, since oxidative injury has been investigated as a potential initiato...
journal_title:International journal of cardiology
pub_type: 信件
doi:10.1016/j.ijcard.2006.07.108
更新日期:2007-06-25 00:00:00
abstract::Forty asymptomatic patients were studied after a first uncomplicated myocardial infarction. They were 36 men and 4 women, with a mean age of 52.6 yr; the location of myocardial infarction was in the anterior wall in 18 (45%) patients and in the inferior wall in 22 (55%). The patients were submitted to: (1) 48-h Holter...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/0167-5273(93)90202-r
更新日期:1993-01-01 00:00:00
abstract::Acute heart failure (AHF) represents a clinical challenge as it encloses a heterogeneous group of syndromes (AHFS) with different pathophysiology, clinical presentations, prognosis and response to therapy. In the last 25years multiple therapeutic targets have been identified and numerous new drugs were evaluated but, ...
journal_title:International journal of cardiology
pub_type: 杂志文章,评审
doi:10.1016/j.ijcard.2016.11.124
更新日期:2017-04-15 00:00:00
abstract:BACKGROUND/OBJECTIVE:Total cavopulmonary connection (TCPC) has been the preferred treatment for patients with univentricular hearts. Current TCPC-techniques are the intra-atrial lateral tunnel (ILT) and the extracardiac conduit (ECC). We aimed to determine ventricular function during rest and stress, and to compare res...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2015.05.181
更新日期:2015-10-01 00:00:00
abstract:UNLABELLED:Atrial fibrillation (AF) is a common arrhythmia with important therapeutic and prognostic implications. An attempt to restore sinus rhythm is considered in most patients with AF. The aim of this study was to assess the value of echocardiographic examination and plasma atrial natriuretic peptide (ANP) evaluat...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2004.08.062
更新日期:2005-09-01 00:00:00
abstract:BACKGROUND:Defining an adequate endpoint for renal denervation trials represents a major challenge. A high inter-individual and intra-individual variability of blood pressure levels as well as a partial or total non-adherence on antihypertensive drugs hamper treatment evaluations after renal denervation. Blood pressure...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2016.06.110
更新日期:2016-10-01 00:00:00
abstract:BACKGROUND:Patients with univentricular hearts and Fontan palliation are at risk for thromboembolic complications. While aspirin and warfarin therapies are currently the mainstay of prophylaxis, controversy exists as to the optimal prevention strategy. METHODS:A cohort study was conducted on the New England registry o...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2013.06.058
更新日期:2013-10-09 00:00:00
abstract:BACKGROUND:In this paper we present a systematic literature overview and analysis of the first results and progress made with minimally-invasive surgery using RF energy in the treatment of AF. The minimally-invasive treatment for atrial fibrillation (AF) tries to combine the success rate of surgical treatment with a le...
journal_title:International journal of cardiology
pub_type: 杂志文章,评审
doi:10.1016/j.ijcard.2011.10.011
更新日期:2013-06-05 00:00:00
abstract:BACKGROUND:To compare magnetic resonance (MR) imaging and multidetector computed tomography (MDCT) for the assessment of myocardial infarction (MI) after alcohol septal ablation (ASA). METHODS:Ten patients (mean age, 60 years ± 16) were examined with both MDCT and 1.5-T MR imaging performed 10 minutes after injection,...
journal_title:International journal of cardiology
pub_type: 临床试验,杂志文章
doi:10.1016/j.ijcard.2011.07.015
更新日期:2013-04-15 00:00:00
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journal_title:International journal of cardiology
pub_type: 评论,历史文章,信件
doi:10.1016/j.ijcard.2008.04.053
更新日期:2009-08-14 00:00:00
abstract:BACKGROUND:Chronic endoplasmic reticulum (ER) stress contributes to the apoptotic cell death in the myocardium, thereby playing a critical role in the development of cardiomyopathy. ER stress has been reported to be induced after high-fat diet feeding in mice and also after saturated fatty acid treatment in vitro. Ther...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2014.03.176
更新日期:2014-06-01 00:00:00
abstract::Most coronary anomalies are clinically asymptomatic. However some of them may present with chest pain, syncope, heart failure and sudden death. Anomalous left anterior descending artery arising from right coronary artery is a very rare coronary anomaly. ...
journal_title:International journal of cardiology
pub_type: 信件
doi:10.1016/j.ijcard.2008.11.078
更新日期:2010-04-30 00:00:00
abstract:BACKGROUND:Abnormal ventilatory/hemodynamic responses to exercise contribute to functional impairment in patients with heart failure (HF). This study investigates how interval and continuous exercise regimens influence functional capacity by modulating ventilatory efficiency and hemodynamic function in HF patients. ME...
journal_title:International journal of cardiology
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.ijcard.2011.11.086
更新日期:2013-07-15 00:00:00
abstract::Pulmonary arterial hypertension (PAH) associated with congenital heart disease (CHD) due to systemic to pulmonary shunting is associated with a high risk of morbidity and mortality. In this study we evaluated 4 years treatment effect of bosentan on exercise capacity and quality of life and survival rates in 64 adult p...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2011.06.064
更新日期:2013-03-20 00:00:00
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journal_title:International journal of cardiology
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.ijcard.2018.11.114
更新日期:2019-03-01 00:00:00
abstract:BACKGROUND:An association between interatrial block (IAB) (P wave duration ≥120 ms) and dementia has been suggested. Our objective was to assess the association of IAB with cognitive impairment (CI). METHODS:The prospective BAYES registry included 552 patients ≥70 years with structural heart disease without documented...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2020.08.006
更新日期:2020-12-15 00:00:00
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journal_title:International journal of cardiology
pub_type: 杂志文章,meta分析
doi:10.1016/j.ijcard.2015.11.135
更新日期:2016-02-01 00:00:00
abstract::Takayasu arteritis, Buerger's diseases, temporal arteritis, vascular Behcet disease and inflammatory abdominal aortic aneurysm are classified in Japan as intractable vasculitides involving mainly large vessels, because their etiologies are not yet elucidated and, therefore, treatments for them were not yet established...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/s0167-5273(00)00196-0
更新日期:2000-08-31 00:00:00
abstract:INTRODUCTION:The purpose of this study was to investigate the accuracy of qualitative stress perfusion cardiac magnetic resonance (CMR) to diagnose ischemia-causing lesions according to different definitions of significant coronary artery disease (CAD), and magnetic field strength. METHODS:We searched PubMed, Web of S...
journal_title:International journal of cardiology
pub_type: 杂志文章,meta分析,评审
doi:10.1016/j.ijcard.2017.11.066
更新日期:2018-02-01 00:00:00
abstract::The prognostic value of thallium-201 imaging in patients with unstable angina is not well established. Forty consecutive patients with unstable angina who had responded to medical therapy underwent predischarge symptom-limited exercise testing and 39 of them underwent exercise thallium-201 imaging, on average 3 days a...
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pub_type: 杂志文章
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pub_type: 杂志文章
doi:10.1016/s0167-5273(98)00335-0
更新日期:1999-01-01 00:00:00
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journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2015.06.007
更新日期:2015-10-15 00:00:00
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journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2007.12.119
更新日期:2009-03-06 00:00:00
abstract::Atrial fibrillation (AF) represents the most common sustained arrhythmia in clinical practice. Recent studies have demonstrated the possible implication of inflammation and oxidative stress in the pathogenesis of AF. Probucol, a lipid-lowering drug that has a potent antioxidant effect, may have favorably benefits on a...
journal_title:International journal of cardiology
pub_type: 信件
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更新日期:2010-10-08 00:00:00
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journal_title:International journal of cardiology
pub_type: 杂志文章,评审
doi:10.1016/j.ijcard.2012.12.002
更新日期:2013-09-30 00:00:00
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journal_title:International journal of cardiology
pub_type: 杂志文章,评审
doi:10.1016/j.ijcard.2019.01.020
更新日期:2019-07-01 00:00:00
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journal_title:International journal of cardiology
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.ijcard.2010.08.032
更新日期:2011-12-01 00:00:00
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journal_title:International journal of cardiology
pub_type: 杂志文章,评审
doi:10.1016/j.ijcard.2015.09.081
更新日期:2016-01-01 00:00:00
abstract::Asynchronous depolarization and contraction sequence, secondary to intraventricular conduction defects or to permanent right ventricular apical pacing, is associated with adverse effects that may be clinically evident in the failing heart. Experimental and clinical studies have suggested that asynchronous ventricular ...
journal_title:International journal of cardiology
pub_type: 杂志文章,评审
doi:10.1016/j.ijcard.2006.03.091
更新日期:2007-06-25 00:00:00
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journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/0167-5273(87)90243-9
更新日期:1987-08-01 00:00:00