AN extensive study has been made recently of acute hemolytic streptococcic disease of the respiratory tract among military personnel. A summary of the clinical and bacteriologic observations, so far as they contribute to the understanding of the etiology and pathogenesis of rheumatic fever, has been published.1 The data indicated (1) that rheumatic fever was invariably preceded by infection by group A hemolytic streptococci; (2) that a nonarthritic nonsuppurative continuing disease also frequently followed infection by these organisms, and (3) that electrocardiographic abnormalities, indicating the presence of carditis, were often present during the course of arthritic and nonarthritic illness.
It is the purpose of this paper to illustrate and describe the electrocardiographic abnormalities that were discovered and to compare them with those previously observed during the course of streptococcic and other types of infectious disease.
MATERIAL AND METHODS
All patients suffering from disease of the respiratory tract were