IJCS | Volume 32, Nº2, March/April 2019

103 Figure 1 - Brazilian carnival. Women wearing carnival costumes and dancing in Olinda, Pernambuco, Brazil. 1. Voskoboinik A, Prabhu S, Sugumar H, Kistler PM. Effect of Dietary Factors on Cardiac Rhythm. Am J Cardiol. 2018;122(7):1265–71. 2. Desai R, Patel U, Deshmukh A, Sachdeva R, Kumar G. Burden of arrhythmia in recreational marijuana users. Int J Cardiol . 2018;264:91–2. 3. Meenakshi S. Subbaraman WCK. Simultaneous vs. concurrent use of alcohol and cannabis in the National Alcohol Survey. Alcohol Clin Exp Res. 2016;39(5):872–9. 4. Grasser EK, Miles-Chan JL, Charrière N, Loonam CR, Dulloo AG, Montani J-P. Energy Drinks and Their Impact on the Cardiovascular System: Potential Mechanisms. Adv Nutr An Int Rev J. 2016;7(5):950–60. 5. Grasser EK, Yepuri G, Dulloo AG, Montani JP. Cardio- and cerebrovascular responses to the energy drink Red Bull in young adults: a randomized cross-over study. Eur J Nutr. 2014;53(7):1561–71. 6. Voskoboinik A, Kalman JM, Kistler PM. Caffeine andArrhythmias: Time to Grind the Data. JACC Clin Electrophysiol 2018;4(4):425–32. 7. Fletcher EA, Lacey CS, Aaron M, Kolasa M, Occiano A, Shah SA. Randomized controlled trial of high-volume energy drink versus caffeine consumption on ECG and hemodynamic parameters. J AmHeart Assoc 2017;6(5):1–8. 8. Gray B, Ingles J, Medi C, Driscoll T, Semsarian C. Cardiovascular Effects of Energy Drinks in Familial Long QT Syndrome : ARandomized Cross- Over Study. Int J Cardiol. 2017;231:150–4. 9. Campbell B, Wilborn C, La Bounty P, Taylor L, Nelson MT GM, Ziegenfuss TN,et al. International Society of Sports Nutrition position stand: energy drinks. J Int Soc Sport Nutr. 2013;10(1):1–20. References Mesquita Carnival and energy drinks Int J Cardiovasc Sci. 2019;32(2)102-103 Editorial that the corrected QT interval and systolic blood pressure were significantly higher following high-volume ED consumption when compared with caffeine alone. 7 Patients with congenital long QT syndrome should be strongly advised not to ingest EDs because dangerous QTc prolongation of > 50 ms following ED consumption has been reported. 8 Although there is no clearly defined threshold for ED use, the International Society of Sports Nutrition recommends that patients with pre-existing cardiovascular conditionswho are takingmedications that may be affected by caffeine and other stimulants refrain from EDs, and they warn that more than one ED/day, even in healthy individuals, may be harmful. 9 Celebrating carnival is easy, funand cheap. Thepotential risks of combining ED and alcohol or illicit drugs are high, and patients should be advised of this. Also, the intake of EDs alone can increase the riskof cardiac adverse effects and should be done with moderation. One of the best things in life are good memories and having a cardiac complication during holidays is one those nobody would like to have. This is an open-access article distributed under the terms of the Creative Commons Attribution License