fibrillation
fibrillation
Noun
This term describes a chaotic electrical state where cardiac muscle fibers twitch independently rather than pulsing in unison. It carries a high-urgency medical connotation, typically associated with life-threatening emergencies and the immediate need for defibrillation to restore a rhythmic heartbeat.
As a technical medical noun, it is treated as an uncountable mass noun when referring to the physiological state or the phenomenon of quivering. While it can be used countably in specific clinical reports to describe different types of the condition, it generally does not take a plural form in standard medical discourse.