Table 2.

Definitions of critical care interventions

Critical care intervention	Definition
Mechanical ventilation	Mechanical ventilation for acute respiratory failure
RBC transfusion	Transfusion of packed red blood cells
FFP transfusion	Transfusion of fresh frozen plasma
Neurosurgical intervention	Craniotomy/craniectomy, burr hole evaluation of hematoma, placement of a subdural drain, placement of an intracranial pressure monitor/intraventricular catheter, or treatment with mannitol or hypertonic saline
Invasive monitoring	Use of central venous catheter to measure central venous pressure (not for venous access alone), or the use an arterial line to measure blood pressure, or the use of a pulmonary artery catheter to measure pulmonary artery wedge pressure
Arrhythmia	Non-sinus arrhythmia less than 40 or greater than 120 beats/minute with the need for urgent intervention
Vasopressor or inotrope use	Use of dopamine, norepinephrine, epinephrine, dobutamine, phenylephrine, or vasopressin for vasopressor or inotropic support
Interventional angiography	Use of interventional angiography for therapeutic purposes
Cardiac arrest	Cardiac arrest requiring cardiopulmonary resuscitation