ABC | Volume 111, Nº4, Octuber 2018

Short Editorial Rocha Analysis of Cardiac Dyssynchrony Arq Bras Cardiol. 2018; 111(4):616-617 1. Nascimento EA, Wiefels Reis CC, Ribeiro FB, Alves CR, Silva EN, Ribeiro ML, Mesquita CT. Relação entre dissincronismo elétrico e mecânico em pacientes Submetidos a TRC com implante do eletrodo de VE orientado pela cintilografia GATED SPECT. Arq Bras Cardiol. 2018; 111(4):607-615. 2. Ruschitzka F, AbrahamWT, Singh JP, Bax JJ, Borer JS, Brugada J, et al. Cardiac- resynchronization therapy in heart failure with a narrow QRS complex. N Engl J Med. 2013;369(15):1395-405. 3. Sillanmäki S, Lipponen JA, Tarvainen MP, Laitinen T, Hedman M, Hedman et al. Relationships between electrical and mechanical dyssynchrony in patients with left bundle branch block and healthy controls. J Nucl Cardiol.2018 Feb 08:1-12. 4. InternationalAtomicEnergyAgency(IAEA).IAEAAnnualReport2013.Vienna (Austria);2013.[Cited in2017Feb09]Availablefrom: <https://www.iaea.org/ About/Policy/GC/GC58/GC58Documents/English/gc58-3-att1_en.pdf>. 5. Chung ES, Leon AR, Tavazzi L, Sun JP, Nihoyannopoulos P, Merlino J, et al. Results of the predictors of response to CRT (PROSPECT) trial. Circulation. 2008; 117(20):2608-16. 6. Höke U, Bax JJ, Delgado V, AjmoneMarsanN. Assessment of left ventricular dyssynchrony by three-dimensional echocardiography: Prognostic value in patients undergoing cardiac resynchronization therapy. J Cardiovasc Electrophysiol. 2018; 29(5):780-7. 7. Stankovic I, Prinz C, Ciarka A, Daraban AM, Kotrc M, Aarones M, et al. Relationship of visually assessed apical rocking and septal flash to response and long-term survival following cardiac resynchronization therapy (PREDICT-CRT). Eur Heart J Cardiovasc Imaging. 2016; 17(3):262-9. 8. Khan FZ, Virdee MS, Palmer CR, Pugh PJ, O’Halloran D, Elsik M, et al. Targeted left ventricular lead placement to guide cardiac resynchronization therapy:theTARGETstudy:arandomized,controlledtrial. JAmCollCardiol. 2012; 59(17):1509-18. 9. Romero-Farina G, Aguadé-Bruix S. Analysis of ventricular synchrony: A complex puzzle. J Nucl Cardiol. 2018 Mar 13. [Cited im 2018 June 10]. Available from: https://doi.org/10.1007/s12350-018-1252-5 10. Sassone B, Nucifora G, Mele D, Valzania C, Bisignani G, Boriani G; for Task Force on Imaging of Italian Association of Arrhythmias and Cardiac Stimulation (AIAC). Role of cardiovascular imaging in cardiac resynchronization therapy: a literature review. J Cardiovasc Med (Hagerstown). 2018;19(5):211-22. 11. Reis CCW, Nascimento EAD, Dias FBR, RibeiroML,Wanderley APB, Batista LA, Mesquita CT. Aplicabilidade da cintilografia miocárdica de perfusão na avaliação do sincronismo cardíaco. Arq Bras Cardiol imagem cardiovasc. 2017; 30(2):54-63. References This is an open-access article distributed under the terms of the Creative Commons Attribution License Some issues seem defined: the importance of cardiac dyssynchrony as a first therapeutic target in cardiac resynchronization, the need for its identification, quantification and localization, the relevance of an ideal electrode positioning in the LV, in fibrosis-free areas with higher ventricular contraction delay. Confirmation for the data mentioned previously in multicentric studies, correlated with better prognosis outcomes, should clarify an effervescent area in artificial heart stimulation and it may cause such techniques to become widespread in medical guidelines and implemented in clinical practice. Thus, the study at hand shows positive perspectives in search for better results in cardiac resynchronization therapy. 617