ABC | Volume 113, Nº1, July 2019

Original Article Oliveira et al Readmission of patients with coronary syndrome Arq Bras Cardiol. 2019; 113(1):42-49 1. Belitardo JN, Ayoub AC. Identification of readmission predictors in elderly patients with acute coronary syndrome. Int J Cardiovasc Sci. 2015;28(2):139-47. 2. Louvison MC, Lebrão ML, Duarte YA, Santos JL, Malik AM, Almeida ES. Desigualdades no uso e acesso aos serviços de saúde entre idosos do município de São Paulo. Rev Saúde Pública. 2008;42(4):733-40. 3. McManus DD, NguyenHL, Saczynski JS, TisminetzkyM, Bourell P, Goldberg RJ. Multiple cardiovascular comorbidities and acute myocardial infarction: Temporal trends (1990-2007) and impact on death rates at 30 days and 1 year. Clin Epidemiol. 2012;4(1):115-23. 4. Costa IM, Silva DG, Barreto-Filho JA, Oliveira JL, Silva JR, Buraque MD, et al. Diet quality of patients with acute coronary syndrome receiving public and private health care. Nutrition. 2019 Mar;59:131-7. 5. 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Factors associated with 30-day readmission rates after percutaneous coronary intervention. Arch Intern Med. 2012;172(2):112–7. 10. World Health Organization.(WHO). Diet, nutrition and the prevention of chronic diseases. Geneva;1990. ( Report of aWHOgroup. Technical Report Series. No 797). 11. LebrãoML, Duarte YAO (orgs). SABE - Saúde, Bem-estar e Envelhecimento - OProjeto Sabe nomunicípio de São Paulo: uma abordagem inicial. Brasília: Organização PanAmericana da Saúde (OPAS); 2003. 12. Matsudo S, Araújo T, Matsudo V, Andrade D, Andrade E, Oliveira L, et al. Questionário Internacional de Atividade Física (IPAQ): estudo de validade e reprodutibilidade no Brasil. Rev Bras de Ativ Fís Saúde. 2001;6(2):5-12. 13. IPAQResearch Committee. Guidelines for the data processing and analysis of the International Physical ActivityQuestionnaire. No. 2005.[Cited in 2018 Ju 12]. Available from: http://www.ipaq.ki.se/scoring.pdf. 14. R Core Team (2016) R: A Language and Environment for Statistical Computing. R Foundation for Statistical Computing. Vienna, Austria. 15. Dreyer RP, Dharmarajan K, Kennedy KF, Jones PG, Vaccarino V, Murugiah K, et al. Sex Differences in 1-Year All-Cause rehospitalization in patients after acute myocardial infarction. Circulation. 2017;135(6):521–53. References Our study has some limitations that should be considered. The lack of detailed information about the medications used by the patients and possible losses to follow-up. The readmissions were evaluated in the four main and referral cardiology hospitals of the city and therefore, a higher number of readmissions was somehow expected; we did not evaluate the occurrence of readmission in other hospitals in the city or in other cities. In addition, among these four institutions, therewas only one public hospital, which requires referral for admission. These factors may have led to an underestimation of readmissions. On the other hand, this study design can be used to measure predictor variables before the occurrence of readmissions. Conclusion ACS was the main cause of readmissions within one year after the first admission, with higher prevalence among users of supplemental health care. The main determinants of readmission were the type of health care provided, and a previous diagnosis of congestive heart failure. The present study adds to the knowledge on determinants of readmission and may serve as a basis for implementation of assistance strategies that may reduce the occurrence of new admissions in medium- and long term, leading to better prognosis and lower costs to the health system. Author contributions Conception and design of the research: Oliveira LMSM, Costa IMNBC, Silva DG, Silva JRS, Buarque MDBM, Sousa ACS; Acquisition of data: Oliveira LMSM, Costa IMNBC, Buarque MDBM, Sousa ACS; Analysis and interpretation of the data: Oliveira LMSM, Costa IMNBC, Silva DG, Silva JRS, Barreto Filho JAS, Almeida-Santos MA, Oliveira JLM, Vieira DAS, Sousa ACS; Statistical analysis: Silva DG, Silva JRS, Vieira DAS; Writing of the manuscript: Oliveira LMSM, Costa IMNBC, Silva DG, Barreto Filho JAS, Almeida-Santos MA, Oliveira JLM, Vieira DAS, Sousa ACS; Critical revision of the manuscript for intellectual content: Oliveira LMSM, Silva DG, Barreto Filho JAS, Almeida-Santos MA, Oliveira JLM, Vieira DAS, Sousa ACS. Potential Conflict of Interest No potential conflict of interest relevant to this article was reported. Sources of Funding There were no external funding sources for this study. Study Association This article is part of the thesis of master submitted by Larissa Marina Santana, fromUniversidade Federal de Sergipe. Ethics approval and consent to participate This study was approved by the Ethics Committee of the Universidade Federal de Sergipe under the protocol number 2.203.855 / 302.544. All the procedures in this study were in accordance with the 1975 Helsinki Declaration, updated in 2013. Informed consent was obtained from all participants included in the study. 48