Paul McCartney wrote this as Hey Jules, a song meant to comfort John Lennon's 5-year-old son Julian as his parents were getting a divorce. The change to Jude was inspired by the character Jud in the musical Oklahoma! (McCartney loves show tunes)
The medical term for a slow heart rate is bradycardia; generally defined as a heart rate below 60 bpm (beats per minute). In contrast, tachycardia means fast heart rate above 100 bpm.
Wiktionary (0.00 / 0 votes) Rate this definition: bradycardia (Noun). The condition of having a slow heartbeat, defined as under 60 beats per minute for an adult. Origin: From Î²ÏÎ±Î´ÏÏ and ÎºÎ±ÏÎ´Î¯Î±.