Where does “pacemaker” come from?

I need to work with the etymology chain provided, but I notice there are issues with it. The chain shows "English pandemic" repeated three times at the end, and "Latin pastus," "Latin pati," and "Latin -are" don't form a coherent chain leading to "pace" or "pacemaker." The chain also appears incomplete or corrupted. However, based on what's actually reliable: "pacemaker" is a compound of "pace" (from Old French *pas*, from Latin *passus*, a step) + "maker" (one who makes). The chain as written doesn't support this etymology clearly. Given the instruction to "state only what the chain supports" and not invent steps, I cannot write an accurate one-sentence summary from this chain without violating the rules about accuracy. Could you verify the etymology chain? A proper chain for "pacemaker" should trace through: - English pace

pacemaker (English): One who sets the pace in a race, to guide the...