TABLE 3.

Baseline characteristics of the study population stratified by index SCAI shock classification

Parameter	SCAI C N = 95	SCAI D N = 40	SCAI E N = 18
Access site
Radial	68 (71.6)	9 (22.5)	5 (27.8)
Femoral	27 (28.4)	31 (77.5)	13 (72.2)†
Demographics
Age, years	66 (58, 70)	69 (61.5, 75.5)	65 (58, 71) NS
Male	72 (75.8)	29 (72.5)	9 (50.0) NS
BMI median (Q1, Q3)	27.4 (23.8, 32.2)	29.32 (24, 31.75)	30.25 (26, 35.7) *
Cerebrovascular disease	2 (2.1)	15 (37.5)	7 (38.9)†
Clinical characteristics
Diabetes	33(34.7)	26(65.0)	13(72.2)†
Index GFR < 60 ml/min	45 (47.4)	27 (67.5)	16 (88.9) **
Prior MI/PCI/CABG/valve surgery	20(21.1)	4(10.0)	5(27.8) NS
EF ≤ 30%	53 (55.8)	30 (75.0)	10 (55.6) NS
Mechanical ventilation	48 (50.5)	39 (97.5)	18 (100)†
Number of vasopressors	1 (0, 2)	2 (2, 3)	3 (3, 3) NS
Systolic BP	90 (85,100)	73 (67, 78.5)	70 (65, 75) NS
Cardiac arrest	27 (28.4)	12 (30.0)	12 (66.7) **
Smoking history	54 (56.8)	13 (32.5)	5 (27.8) **
RA	12 (10, 17)	14 (10, 18)	16 (15, 18) *
PCWP	20 (15, 27)	24 (16, 28)	21 (20, 24) NS
RA/wedge ratio	0.6 (0.5, 0.7)	0.6 (0.5, 0.8)	0.8 (0.6, 1.0) NS
Baseline lactate	2.5 (1.5, 4.2)	3.4 (2.2, 4.7)	7.1 (2.4, 11.9) **
Baseline CPO	0.7 (0.6, 0.9)	0.7 (0.5, 0.8)	0.6 (0.5, 0.8) NS
Baseline PAPi	1.4 (0.9, 2)	1.2 (0.9, 2.0)	0.6 (0.4, 1) NS
Clinical presentation
NSTEMI	42 (44.2)	20 (50.0)	9 (50.0)
STEMI	51 (53.7)	20 (50.0)	9 (50.0) NS
Unstable angina	2 (2.1)	0 (0.0)	0 (0.0) NS

Note: Values presented are median (Q1, Q3) or frequency (percent), where appropriate.

Abbreviations: CABG, coronary artery bypass grafting; CAD, coronary artery disease; CPO, cardiac power output; EF, ejection fraction; NS, nonsignificant; NSTEMI, non-ST segment elevation myocardial infarction; PAPi, pulmonary arterial pulsatility index; PCI, percutaneous coronary intervention; PCWP, pulmonary capillary wedge pressure; RA, right atrium; SCAI, Society for Cardiovascular Angiography and Interventions; STEMI, ST-elevation myocardial infarction.

^*p < .05.

^**p < .01.

^†p < .001.