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. Author manuscript; available in PMC: 2015 Mar 10.
Published in final edited form as: Resuscitation. 2013 Dec 19;85(3):381–386. doi: 10.1016/j.resuscitation.2013.12.008

Table 1.

Patient and event factors.

Patient factors (dichotomous) Event factors (dichotomous) Treatment variables (continuous)
•Pre-existing CV support •Witnessed •Defibrillation attempts (number)
•Pre-existing respiratory support •Weekend •Epinephrine doses (number)
•Monitored •Subsequent vs. initial pVT/VF •Event duration (minutes)
Patient factors (categorical) Event factors (categorical) •Time from event to CPR (minutes)
•Age •Event location •Time from pVT/VF to defibrillation (minutes)
•Illness category ○ICU •Time from event to epinephrine (minutes)
Cardiac surgery ○ED
○Cardiac - non-surgical ○OR/PACU
○Trauma ○Diagnostic/interventional
○All others ○Ward
○Other

CV. cardiovascular; pVT/VF, pulseless ventricular tachycardia/ventricular fibrillation; ICU, intensive care unit; ED, emergency department; OR, operating room; PACU, post anesthesia care unit; CPR. cardiopulmonary resuscitation.