A flat is an apartment or small home that does not have any stairs. It is flat, that is, all on one level.     Flet     From the Scottish word flet, meaniâ¦ng the inner part of a house.
Bradycardia in an adult is any heart rate less than 60 beats per minute (BPM), although symptoms usually manifest only for heart rates less than 50. The word bradycardia is from the Greek Î²ÏÎ±Î´ÏÏ, bradys slow, and ÎºÎ±ÏÎ´Î¯Î±, kardia, heart.
A heart rate above the normal values is referred to as tachycardia, a heart rate below the normal values is referred to as bradycardia: 1  Infants: 100 to 160 beats per minute. 2  Children 1 to 10 years: 70 to 120 beats per minute. 3  Children over 10 and adults: 60 to 100 beats per minute. 4  Athletes: 40 to 60 beats per minute.