In addition to surgical applications, it can be used in the intensive care unit for someone who may be intubated on a ventilator.

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But the third who did were far less likely to undergo cardiopulmonary resuscitation or be put on a ventilator or end up in an intensive-care unit.

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Each morning, a senior nurse walked through the unit, clipboard in hand, making sure that every patient on a ventilator had the bed propped at the right angle, and had been given the right medicines and the right tests.

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