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.
If the tests find that you do have mild bradycardia and you donât have symptoms, your doctor will keep an eye on your condition, but you may not need treatment. What Causes Bradycardia. Your heart has a built-in pacemaker called the sinoatrial (SA) node that tells your heart how quickly to beat. As you age, the sinoatrial node can slow down, and that slows down your heart beat rate. Another cause of bradycardia is when the atrioventricular (AV) node stops working well and leads to a slower heart rate, Moss says.