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.
1 The diphtheria, tetanus, and pertussis (whooping cough) vaccine (DTaP) are usually given to babies at ages 2, 4, and 6 months, and again at 15 to 18 months old. 2  DTap is a very effective vaccine for small children. 3  Kids will need another booster between ages 4 and 6. Td. 2  If you're an adult, get a Td (tetanus and diphtheria) booster shot every 10 years to stay protected. 3  Since some people may lose the protective antibody levels after 5 years, a booster vaccination is recommended if you get a deep, contaminated wound and haven't had a vaccination in more than 5 years.