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.
something that makes a strong impression because it is so unexpected discovering that I had a long-lost sister was an absolute bombshell Synonyms surprise, jar, jaw-dropper, jolt, stunnerRelated Words shock, thunderclap; eye-opener, revelation, shocker; amazement, marvel, wonder; fillip, kick, kicker, twist, wrinkle.