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American Journal of Case Reports is ranked the World leading among journals dedicated to publishing clinical case reports. AJCR is indexed in Web of Science, PubMed/ PMC, Scopus

(1) CiteScore (Impact Factor - like by Scopus, Elsevier) is the number of citations received by a journal in one year to documents published in the three previous years, divided by the number of documents indexed in Scopus published in those same three years.

(2) SNIP (Source Normalized Impact per Paper) measures a source’s contextual citation impact by weighting citations based on the total number of citations in a subject field. It helps you make a direct comparison of sources in different subject fields. SNIP takes into account the characteristics of the source's subject field, which is the set of documents citing that source.

(3) SJR is weighted by the prestige of a journal. Subject field, quality, and reputation of the journal have a direct effect on the value of a citation. SJR assigns relative scores to all of the sources in a citation network. Its methodology is inspired by the Google PageRank algorithm, in that not all citations are equal. A source transfers its own 'prestige', or status, to another source through the act of citing it. A citation from a source with a relatively high SJR is worth more than a citation from a source with a lower SJR. 

Clinical case reports are an invaluable first-hand source of evidence in medicine and a tool most often used in practice to exchange information and generate a more expanded search for evidence. In addition to the “evidence of what happened”, single or multiple cases are an important basis for further and more advanced research on diagnosis, treatment effectiveness, causes and outcomes of disease. However limited their conclusions may be, case reports remain a fundamental component of medicine, contributing greatly to the advancement of health care. In today's ever-expanding Evidence-Based Medicine, case reporting require a well-defined focus, content, and structure.

Presently, only a fraction of case reports is useful for clinical decision-making and bedside-decision oriented research. Therefore, the aim of the Journal is to gather case reports across medical disciplines, thereby integrating interdisciplinary, international medical knowledge.

Published: 2019-05-26

Takotsubo Cardiomyopathy Complicated with Left Ventricular Thrombus in Myasthenic Crisis: A Case Report

Natnicha Pongbangli, Sasivimon Jae-aue, Wanwarang Wongcharoen, Arintaya Phrommintikul

(Division of Cardiology, Department of Internal Medicine, Chiang-Rai Prachanukroh Hospital, Chiang Rai, Thailand)

Am J Case Rep 2019; 20:743-747

DOI: 10.12659/AJCR.915415

BACKGROUND: Myasthenia gravis can precipitate severe stress particularly during a myasthenic crisis episode. Takotsubo cardiomyopathy has been demonstrated in several conditions associated with emotional or physical stress. As a result, Takotsubo cardiomyopathy is not uncommon in patients with MG. The severe complications of Takotsubo cardiomyopathy include heart failure and left ventricular thrombus associated with thromboembolic risk. The concomitant myasthenic crisis and Takotsubo cardiomyopathy with apical left ventricular thrombus has never been reported.
CASE REPORT: A 67-year- old Thai female diagnosed with myasthenia gravis was admitted to the intensive care unit due to the myasthenic crisis. The 12-lead electrocardiogram showed marked QT interval prolongation and diffuse large T-wave inversion. Echocardiogram demonstrated basal hyperkinesia and apical akinesia with apical ballooning. Hyperechoic mass was noted in akinetic left ventricular apex. Takotsubo cardiomyopathy with apical left ventricular thrombus was diagnosed. Both conditions were successfully treated in this patient without any complications.
CONCLUSIONS: The electrocardiogram surveillance in patients with myasthenic crisis is essential to detect the occurrence of Takotsubo cardiomyopathy and its complications. Early diagnosis and treatments may decrease mortality and morbidity related with this condition.

Keywords: Embolism and Thrombosis, Myasthenia Gravis, Autoimmune, Experimental, takotsubo cardiomyopathy

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