IJCS | Volume 32, Nº6, November / December 2019

621 1. Malachias MVB, Souza WKSB, Plavnik FL, Rodrigues CIS, Brandão AA, Neves MFT, et al., Sociedade Brasileira de Cardiologia. 7ª Diretriz Brasileira de Hipertensão Arterial. Arq Bras Cardiol. 2016;107(3 supl 3):1-83. 2. WeberMA, Schiffrin EL, WhiteWA, Mann S, LindbolmLH, Kenerson JG, et al. Clinical practice guidelines for the management of hypertension in the community: a statement by the American Society of Hypertension and the International Society of Hypertension. J Hypertens. 2014;32(1):3-15. 3. Task Force for the management of arterial hypertension of the European Society of Hypertension; Task Force for the management of arterial hypertension of the European Society of Cardiology. 2013 ESH/ESC Guidelines for the Management of Arterial Hypertension. Blood Press. 2013;22(4):193-278. 4. Vettorazzi J, Vetori DV, Martins-Costa SH, Ramos JGL. Variação sazonal na prevalência de distúrbios hipertensivos da gestação em primigestas do sul do Brasil. Clin Biomed Res. 2016;36(1):11-17. 5. Amoah AO, Angell SY, Byrnes-Enoch H, Amirfar S, Maa P, Wang JJ. Bridging the gap between clinical practice and public health: using EHR data to assess trends in the seasonality of blood-pressure control. Prev Med Rep. 2017 Apr 26;6:369-75. 6. Chor D, Pinho Ribeiro AL, Sá Carvalho M, Duncan BB, Andrade Lotufo P, AraújoNobre A, et al. Prevalence, Awareness, Treatment and Influence of Socioeconomic Variables on Control of High Blood Pressure: Results of the ELSA-Brasil Study. Plos One. 2015;10(6):e0127382. 7. Guimarães RM, Andrade SSCA, Machado EL, Bahia CA, Oliveira MM, Jacques FVL. Regional differences in cardiovascular mortality transition in Brazil, 1980 to 2012. Rev Panam Salud Publica. 2015;37(2):83-9. 8. Moreira LB, Fuchs SC, WieheM, Gus M, Moraes RS, Fuchs FD. Incidence of hypertension in Porto Alegre, Brazil: a population-based study. J Hum Hypertens. 2008;22(1):48-50. 9. PiconRV, Fuchs FD, Moreira LB, Fuchs SC. Prevalence of hypertension among elderly persons in urban Brazil: a systematic review with meta- analysis. Am J Hypertens. 2013;26(4):541-8. 10. Bassanesi SL, AzambujaMI, Achutti A. Mortalidade Prematuremortality due to cardiovascular disease and social inequalities in Porto Alegre: from evidence to action. Arq Bras Cardiol. 2008;90(6):403-12. 11. Casilimas GAG, Martin DA, Martin DA, Martínez MA, Mechán CR, Mayorga CA, et al. Pathophysiology of hypertension secondary to obesity. Arch Cardiol Mex. 2017;87(4):336-44. 12. Iglesias AG, Alonso JEL, Sanz RA, Alonso TV. Factores associados al control de la presión arterial em la cohorte del estudio del Riesgo de Enfermedad Cardiovascular em Castilla y León (RECCyL). Hipertens Riesgo Vasc. 2015;32(2):48-55. 13. Ortega LM, Sedki E, Nayer A. Hypertension in the African American population: a succinct look at its epidemiology, pathogenesis, and therapy. Nefrologia. 2015;35(2):139-45. References Escosteguy et al. Temperature variation in blood pressure Int J Cardiovasc Sci. 2019;32(6):615-622 Original Article This study has limitations, as it consists of a population sample that had exams requested according to the attending physicians’ individual criteria and no evaluation of other risk factors for AH, such as weight, ethnicity and family history of SAH. Conclusion The influence of climatic factors on blood pressure behavior is still controversial. There are not enough data in Brazil and in its South region because the studies related to the subject are scarce or nonexistent. With four well-defined climatic seasons, mean air temperature and relative humidity in Porto Alegre show great variation throughout the year; however, this variation did not show a significant influence on systemic arterial pressure behavior in the assessed population. New comparative studies carried out in the same population with different thermal variations can provide further clarification on this subject. Author contributions Conception and design of the research: Escosteguy JR, Beskow M, Van Der Sand CR. Acquisition of data: Escosteguy JR, Beskow M, Van Der Sand CR. Analysis and interpretation of the data: Van Der Sand CR. Statistical analysis: Van Der Sand CR. Writing of the manuscript: Escosteguy JR, Beskow M, Van Der Sand CR. Critical revision of the manuscript for intellectual content: Escosteguy JR, Van Der Sand CR. 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 study is not associated with any thesis or dissertation work. Ethics approval and consent to participate This article does not contain any studies with human participants or animals performed by any of the authors.