In atrial fibrillation, the electrical impulse of the heart is not regular. 1  Parts of the heart cannot contract in an organized pattern. 2  As a result, the heart cannot pump enough blood to meet the body's needs.
Synonyms, crossword answers and other related words for IN A NUTSHELL. summed up briefly; gave the facts in a nutshell; just tell me the story in a nutshell; explained the situation in a nutshell.
Related words. 1  compact verb. 2  compact noun. 3  compact disc noun.  compact at 1  broadsheet. 1. smaller than most things of the same kind a compact car/camera. Synonyms and related words.  2. expressed clearly using few words Synonyms and related words. Using few words in speech or writing:quiet, silent, brief...