Letter L

Life support

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<B>1.</B> A therapy or device designed to preserve someone's life when an essential bodily system is not doing so.

Life support may, for example, involve enteric feeding (by a tube), total parenteral nutrition, mechanical ventilation, a pacemaker, defibrillator, heart/lung machine, or dialysis.<BR><B>2.</B> Something that sustains life, as in 'The earth is the ultimate life support system.' <BR><B>3.</B> A product, program or company being propped up, as in 'Medicare is on life support.

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