We will consider for review only the manuscripts that are not under assessment by other journals and/or have not been previously published, except in abstracts with less than 400 words. Before publication, the corresponding author of an article should email to, the Declaration of Copyright Transfer (available at:, signed by all authors. The approved manuscripts can only be reproduced, fully or partially, with the written consent of the JOCTI Editor-in-chief.


In the letter of submission sent together with the manuscript, the first author must concisely inform the contribution given by the work, declare the article has not been submitted to another journal, and that all authors read and approved the manuscript, in addition to informing whether or not there are conflicts of interest, as per the previous item.


All manuscripts must comply with the style adopted by the JOTCI. It is presumed the first author is responsible for following the instructions for submission, but the other authors must agree with the article content.

The specific instructions for each category of articles accepted for publication are described below.

Original Article

Randomized studies, observational studies and registries, as well as basic research with experimental animals. The structure of the manuscript must contain introduction, methods, results, discussion, conclusions and acknowledgments (optional).

Manuscript limited to 5,000 words (including references, figure legends and tables), with a maximum of 12 authors, 35 references and 8 tables/figures.

Study Design

This category comprises detailed descriptions of protocols from randomized studies or multicenter registries, including hypothesis, basis of reasoning and methods. Doctoral thesis designs are also considered. Planned or ongoing studies can be submitted, provided the patient recruitment phase has not been concluded. It is necessary to confirm the study status upon submission. Study protocols not approved by the Ethics Committee will not be considered. The authors hold copyright. The abstract should be structured.

Manuscript limited to 5,000 words (including references, figure legends and tables), with a maximum of 6 authors, 35 references and 4 tables/figures.

Review Article

This category includes critical and organized evaluations of the literature on topics of current interest for readers, and written after suggestion by the Editorial Board. Hence, well-known and experienced professionals are invited to write the reviews. Spontaneously submitted review articles are not accepted. The abstract should not be structured, except for systematic review articles, which must follow the standard abstract of original articles.

Manuscript limited to 5,000 words (including references, figure legends and tables), with a maximum of 3 authors, 50 references and 8 tables/figures.

Case Report

Case reports comprise descriptions of unique patients or situations, especially rare diseases, and innovative methods of diagnosis or treatment. The text is composed of an introduction, informing the reader about the importance of the subject, and presenting the objectives of the report; the case report itself, and the discussion, which should address the relevant aspects of the case and compare them to data available in the literature. The abstract must not be structured and contain, at most, 100 words.

Manuscript limited to 2,500 words (including references, figure legends and tables), with a maximum of 6 authors, 15 references and 4 tables/figures.




Imaging in Cardiovascular Intervention

This section publishes images, including angiography, computed tomography, magnetic resonance imaging, intravascular ultrasound and optical coherence tomography, in addition to new techniques employed or unusual treatments related to the specialty. The authors are not allowed to write discussions in this section, nor to provide references. Abstract is not required.

Manuscript limited to 500 words (including references), and a maximum of 3 authors, 5 references and 1 figure. Tables are not allowed in this type of article.


Text prepared at the invitation of the JOTCI Editor-in-chief. Spontaneously submitted editorials are not accepted.

Manuscript limited to 1,500 words (including references), and a maximum of 3 authors and 10 references. Tables and figures are not allowed.

Letters to the Editor

Correspondence of scientific content about JOTCI articles published in the past 3 months, at most. The authors of the article addressed will be invited to reply the letter.

Manuscript limited to 500 words, and a maximum of 3 authors and 5 references. Tables and figures are not allowed.


AVI and MP4 format videos are accepted for the sections Case Report, and Imaging in Cardiovascular Intervention.

The video must have a title, presented in the manuscript after the references, with the subtitle “Supplementary information”.



The title of the article should be concise but informative, in the language of the text.


For Original Articles, Study Designs and Systematic Reviews, the abstract must be structured in four parts: introduction (including the rationale and objectives of the study), methods (brief presentation of the methodology employed), results (presentation of the primary outcomes) and conclusions (summarized interpretation of data). It must have, at most, 250 words. The abstract should be informative and not structured for Case Reports and narrative Review Articles.


For all categories of manuscripts, at the end of the abstract, inform three to five keywords in Portuguese, and their respective corresponding term in English, extracted from Health Sciences Descriptors (DeCS; available at: and/or from Medical Subject Headings (MeSH; available at: http://www.ncbi.nlm.nih. gov/mesh).


They should be sequentially numbered using Arabic numerals, respecting the order they are cited in the text, and have a title. Do not forget to give each column a heading (in the first row of the columns).

Footnotes should be identified by symbols, in the following order: *, †, ‡, §, ¶, ||, #, **, ††, etc.

The abbreviations used in tables should be presented in full, according to their order of citation.


They should be sequentially numbered using Arabic numerals, respecting the order they are cited in the text, and have a title.

Patients must not be identified in the figures. If the image has been previously published, the source must be cited in the legend.

Only images in TIFF or JPEG formats are accepted, with minimum resolution of 300 dpi, both for black and white, and color images. Each figure has a minimum size of 8 cm × 8 cm.

The abbreviations used in figures should be presented in full, according to the order they are cited, as well as the symbols used in images (arrows, circles, etc.), which should be equally explained in the legends.


Authors are responsible for providing accurate references. Citations should be identified with superscript Arabic numerals in increasing order, in the body of the text, according to the Vancouver Requirements prepared by the International Committee of Medical Journal Editors (ICMJE; available at:

Personal communications, abstracts and oral papers from conferences will not be accepted as citations.

Reference models:



  1. a) Journals

Standard article

Bundhun PK, Wu ZJ, Chen MH. Impact of modifiable cardiovascular risk factors on mortality after percutaneous coronary intervention: A systematic review and meta-analysis of 100 studies. Medicine (Baltimore). 2015; 94(50):e2313.

Goto K, Lansky AJ, Ng VG, Pietras C, Nargileci E, Mehran R, et al. Prognostic value of angiographic lesion complexity in patients with acute coronary syndromes undergoing percutaneous coronary intervention (from the acute catheterization and urgent intervention triage strategy trial). Am J Cardiol. 2014;114(11):1638-45.

Author of the article is an organization

National Institute of Neurological Disorders and Stroke rtPA Stroke Study Group. Tissue plasminogen activator for acute ischemic stroke. N Engl J Med. 1995; 333(24):15817.

Dvir D, Bourguignon T, Otto CM, Hahn RT, Rosenhek R, Webb JG, et al.; VIVID (Valve in Valve International Data) Investigators. Standardized Definition of Structural Valve Degeneration for Surgical and Transcatheter Bioprosthetic Aortic Valves. Circulation. 2018;137(4):388-99.

Article published online ahead of print

Siallagan D, Loke YH, Olivieri L, Opfermann J, Ong CS, de Zélicourt D, et al. Virtual surgical planning, flow simulation, and 3-dimensional electrospinning of patient-specific grafts to optimize Fontan hemodynamics. J Thorac Cardiovasc Surg. 2017. pii: S0022-5223 (17)32762-9. Epub ahead of print.

  1. a) Books

Standard book

Braunwald E, Zipes DP, Libby P, Bonow R. A textbook of cardiovascular medicine. 10. ed. Philadelphia: Saunders Elsevier; 2017.

Book chapter

Nabel EG, Nabel GJ. Gene therapy for cardiovascular disease. In: Harber E, editor. Molecular cardiovascular medicine. New York: Scientific American; 1995. p. 7996.


Brasil. Ministério da Saúde. Conselho Nacional de Saúde. Resolução 466/2012. Brasília, DF: Ministério da Saúde; 2012.

  1. c) Electronic files

Piegas LS, Timerman A, Feitosa GS, Nicolau JC, Mattos LA, Andrade MD, et al. V Diretriz da Sociedade Brasileira de Cardiologia sobre tratamento do infarto agudo do miocárdio com supradesnível do segmento ST. Arq Bras Cardiol [Internet]. 2015 [cited 2018 Jan 19]: 105(2 Supl.1). Available from: http://publicacoes. 20DO%20IAM%20COM%20SUPRADESNIVEL%20DO%20SEGMENTO%20ST.pdf

World Medical Association (WMA). WMA Declaration of Helsinki. Ethical principles for medical research involving human subjects [Internet]. 59th. WMA General Assembly, Seoul, October 2008 [cited 2018 Jan 19]. Available from: post/wma-declaration-of-helsinki-ethical-principles- for-medical-research-involving-human-subjects/