Your heart beats about 100,000 times in one day and about 35 million times in a year. During an average lifetime, the human heart will beat more than 2.5 billion times. Give a tennis ball a good ...

When your heart “skips a beat” it may feel like a brief flutter or flip-flop in your chest. A scary symptom that is usually harmless, that skipped beat feeling is actually an extra beat that ...

There does appear to be a prolonging PR interval before some dropped beats (second degree type I AV block), however ... R-R intervals making 3rd degree heart block unlikely. The rhythm on this ...