A foxglove in a garden, a woman of eighty-three with atrial fibrillation, and a young man who took the whole bottle. Two patients, one blocked pump, one antidote. This Atlas edition walks the hour: the Na⁺/K⁺ ATPase and the calcium that follows, PVCs and the pathognomonic bidirectional VT (drawn beat by beat), the potassium fork — low in chronic, high in acute — the level that never excludes, Chan and Andrews Fab triggers with the dose ladders (one vial chronic, 80 mg acute, five-and-five in arrest), xanthopsia, the calcium caution, and the mantra to close. Grounded in the Antman NEJM 1982 s…
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