The heart stopped effect built its audience on short form video and meme soundboards, where a medical monitor flatline has become visual shorthand for shock. Editors borrowed the trope from hospital dramas and cartoons, pairing the slowing beeps and final flat tone with freeze frames and stunned faces. Shared as a standalone clip, it works without any specific show or character attached, letting creators signal mock horror, disbelief or a dramatic fail in seconds and reuse it across gaming, anime and reaction edits.