The placement of a catheter into a large central vein, typically in the neck, chest, or groin, to provide access for medication delivery, blood sampling, or hemodynamic monitoring. This procedure allows for administration of irritating medications and rapid fluid resuscitation.
From Latin 'centralis' meaning 'of the center' + 'linea' meaning 'line' + 'insertio' meaning 'a grafting in.' The technique emerged in the 1960s as intensive care medicine developed, providing access to the central circulation for critically ill patients requiring complex medical management.
Central lines can deliver medications directly to the heart in seconds, but they're also one of the most dangerous procedures in medicine! A tiny air bubble injected into a central line can cause instant death, which is why the procedure requires sterile technique equivalent to major surgery.
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