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.
In premature babies, apnea is any pause in breathing that lasts longer than 20 seconds, causing bradycardia, or a drop in the babyâs blood oxygen level. Bradycardia means a slowed heart rate. In premature babies, bradycardia is a heart rate of less than 80 beats per minute.