Table 2.

Inclusion/Exclusion Criteria and Services Involved (total n=36)

Variables		%	N
Typically included patient phenotypes	Cardiac arrest with VF/VT initial rhythm	75	27
	Cardiac arrest with any initial rhythm	61.1	22
	Respiratory arrest (not otherwise specified)	50	18
	Hypothermia	55.6	20
	Drug Overdose	47.2	17
	Cardiogenic shock with pulses	55.6	20
	Other	2.8	1
Exclusion criteria (any)	Age >60	8.3	3
	Age >70	27.8	10
	Obesity	5.6	2
	Cachexia	13.9	5
	Apparent dialysis access/fistula	11.1	4
	Concomitant major trauma	44.4	16
	Suspected/Presumed Drug Overdose	5.6	2
	Unwitnessed	55.6	20
	Non-Shockable Initial Rhythm	13.9	5
	No bystander CPR	38.9	14
	>5min of no bystander CPR	5.6	2
	>10min of no bystander CPR	25	9
	Other	22.2	8
Services involved throughout entire ECMO Process
Emergency Medicine (missing obs. =5)	Yes, always	41.9	13
	Yes, as needed	29	9
	No, but available	3.2	1
	No	25.8	8
Cardiothoracic Surgery (missing obs.=4)	Yes, always	68.8	22
	Yes, as needed	25	8
	No	6.3	2
Cardiology (missing obs.=7)	Yes, always	17.2	5
	Yes, as needed	41.4	12
	No	41.4	12
Interventional Cardiology (missing obs. =8)	Yes, always	17.9	5
	Yes, as needed	35.7	10
	No	46.4	13
Vascular Surgery (missing obs. =10)	Yes, always	3.9	1
	Yes, as needed	23.1	6
	No, but available	23.1	6
	No, not available	3.9	1
	No	46.2	12
Perfusion (missing obs. =6)	Yes, always	76.7	23
	Yes, as needed	16.7	5
	No	6.7	2
Neurology (missing obs.=9)	Yes, always	3.7	1
	Yes, as needed	33.3	9
	No	63.0	17
Palliative Care (missing obs.=10)	Yes, always	19.2	5
	Yes, as needed	19.2	5
	No	61.5	16
Pharmacy (missing obs.=8)	Yes, always	75	21
	Yes, as needed	10.7	3
	No, but available	3.6	1
	No	10.7	3

Abbreviations: VF--Ventricular Fibrillation; VT--Ventricular Tachycardia; CPR--Cardiopulmonary Resuscitation