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  Indian J Med Microbiol
 

Figure 1: Electrocardiogram on day 2 showing sinoatrial exit block. Black arrows indicate normal timing of each P wave and blue arrows represent blocked sinus P wave impulses. Red line indicates pause around dropped P wave which is exactly double the preceding P-P interval

Figure 1: Electrocardiogram on day 2 showing sinoatrial exit block. Black arrows indicate normal timing of each P wave and blue arrows represent blocked sinus P wave impulses. Red line indicates pause around dropped P wave which is exactly double the preceding P-P interval