Flattening of the ST-segment of the electrocardiogram
Keywords:
ventricular remodeling, electrocardiography, heart diseases.Abstract
ABSTRACT Objective: to define the incidence of the flattening of the ST-segment of the electrocardiogram (ECG) and to clarify its meaning and cause. Methods: one hundred and thirty electrocardiogram tracings from patients with different clinical diagnostics were analyzed. The Kappa Test of concordance and the Chi-Square Test were used for statistical analysis. Results: flattening of the ST-segment was found in 78 tracings (60%) and had no statistical correlation with any specific clinical diagnosis. Conclusion: the authors concluded that the flattening of the ST-segment represents a delay in ventricular repolarization which may lead to an incomplete repolarization, caused by different pathogens that would be captured by the derivation of the ECG corresponding to the affected area of the myocardium.Downloads
References
Rabiña P. Diagnóstico eletrocardiográfico precoce de la hipertrofia ventricular isquierda. Arq Inst Cardiol Mex. 1949; 19(3):373-90.
Oliveira Filho JA, Luna Filho B, Salles T, Brito R, Palma L, Barbieri A, et al. Teste de esforço: alterações do segmento ST restritas à fase de recuperação. Rev Assoc Med Bras. 1999; 45(2):137-41.
Lepeschkin E. Modern electrocardiography. Baltimore: Williams & Wilkins; 1951. p. 172.
Burch GE, Winsor T. A primer of electrocardiography. Philadelphia: Lea & Febiger; 1951.
Friedberg CK. Diseases of the heart. Philadelphia: Saunders, 1966.
Parmley WW, Chatterjee K. Cardiology. Philadelphia: Lippincott; 1997.
Tikian AG, Schroeder JS, Kao J, Hultgren H. Effect of lithium on cardiovascular performance: report on extended ambulatory monitoring and exercise testing before and during lithium therapy. Am J Cardiol. 1976; 38(6):701-8.
Armaganijan D, Abud RL, Meneghelo RS. Avaliação cicloergometrica do diltiazen na angina do peito estável. RBM Rev Bras Med. 1994; 51(8):1166-9.
Batlouni M, Armaganijan D, Campos CR. Avaliação clínico-ergométrica do maleato de timolol na angina estável: estudo duplo-cego, aleatório e cruzado. Arq Bras Cardiol. 1986; 46(2):143-6.
Braunwald E. Heart disease. Philadelphia: Saunders; 1980.
Park MH, Mehra MR. Pulmonary hypertension. J Am Coll Cardiol. 2012: 59(3):222-31.
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