Table 1.
Select Baseline Characteristics of High Risk PCI Patients with and without an IABP
| Use of IABP | ||||
|---|---|---|---|---|
| Total (n=181599) | No (n=162609) | Yes (n=18990) | Overall P | |
|
| ||||
| Demographics | ||||
| Admission Status (%) | <0.001 | |||
| Outpatient Referral | 18549 (10.2) | 17628 (10.8) | 921 (4.8) | |
| Emergency Department | 96382 (53.0) | 85474 (52.6) | 10854 (57.2) | |
| Transfer from Acute Care Facility | 62602 (34.5) | 55887 (34.4) | 6715 (35.4) | |
| Transfer from Non-Acute Care Facility | 2099 (1.2) | 1885 (1.2) | 214 (1.1) | |
| Other | 2021 (1.1) | 1735 (1.1) | 286 (1.5) | |
| Age: Mean (SD) | 61.9 (13.1) | 61.7 (13.1) | 63.7 (13.0) | <0.001 |
| Female (%) | 52491 (28.9) | 46723 (28.7) | 5768 (30.4) | <0.001 |
| Race (%) | <0.001 | |||
| White | 153097 (84.3) | 137197 (84.4) | 15900 (83.7) | |
| Black | 11643 (6.4) | 10600 (6.5) | 1043 (5.5) | |
| Other | 16859 (9.3) | 14812 (9.1) | 2047 (10.8) | |
| Insurance Payor (%) | <0.001 | |||
| Government | 82549 (45.5) | 73119 (45.0) | 9430 (49.7) | |
| Commercial | 56831 (31.3) | 51469 (31.7) | 5362 (28.2) | |
| HMO | 22283 (12.3) | 20038 (12.3) | 2245 (11.8) | |
| Other | 19936 (11.0) | 17983 (11.1) | 1953 (10.3) | |
| Cardiac Status | ||||
| Admission Sx Presentation (%) | <0.001 | |||
| No Angina | 6804 (3.7) | 6356 (3.9) | 448 (2.4) | |
| Atypical Chest Pain | 2225 (1.2) | 2124 (1.3) | 101 (0.5) | |
| Stable Angina | 4249 (2.3) | 4118 (2.5) | 131 (0.7) | |
| ACS: Unstable Angina | 11874 (6.5) | 11047 (6.8) | 827 (4.4) | |
| ACS: Non-ST Elevation MI | 12257 (6.7) | 9670 (5.9) | 2587 (13.6) | |
| ACS: ST Elevation MI | 144190 (79.4) | 129924 (79.5) | 14896 (78.4) | |
| Cardiogenic Shock (%) | 21259 (11.7) | 11818 (7.3) | 9441 (49.7) | <0.001 |
| Door to Balloon time (minutes): Mean (SD) | 107.6 (246.1) | 108.5 (253.6) | 101.2 (176.6) | 0.002 |
| CHF – Current Status (%) | 28794 (15.9) | 22774 (14.0) | 6020 (31.7) | <0.001 |
| PCI Status | <0.001 | |||
| Elective | 20189 (11.1) | 19496 (12.0) | 693 (3.6) | |
| Emergency | 120102 (66.1) | 105325 (64.8) | 6409 (77.8) | |
| Salvage | 2452 (1.4) | 1274 (0.8) | 1178 (6.2) | |
| Ejection Fraction: Mean (SD) | 41.4 (15.2) | 42.2 (15.1) | 33.9 (14.2) | <0.001 |
| History and Risk Factors | ||||
| Previous MI (>7 Days) | 42701 (23.5) | 38350 (23.6) | 4351 (22.9) | 0.039 |
| CHF – Previous History | 21127 (11.6) | 18669 (11.5) | 2458 (12.9) | <0.001 |
| Previous Valvular Surgery | 1480 (0.8) | 1284 (0.8) | 196 (1.0) | <0.001 |
| Diabetes | 46577 (25.6) | 41050 (25.2) | 5527 (29.1) | <0.001 |
| Renal Failure – Previous History | 9250 (5.1) | 7768 (4.8) | 1482 (7.8) | <0.001 |
| Renal Failure – Dialysis | 2800 (1.5) | 2423 (1.5) | 377 (2.0) | <0.001 |
| Peripheral Vascular Disease | 16241 (8.9) | 14545 (8.9) | 1696 (8.9) | 0.95 |
| Hypertension | 116278 (64.0) | 104523 (64.3) | 11755 (61.9) | <0.001 |
| Current Use of Tobacco | 73587 (40.5) | 66786 (41.1) | 6801 (35.8) | <0.001 |
| Chronic Lung Disease | 27052 (14.9) | 23930 (14.7) | 3122 (16.4) | <0.001 |
| Dyslipidemia | 111215 (61.2) | 100773 (61.9) | 10482 (55.2) | <0.001 |
| Family History of CAD age <55 | 41704 (23.0) | 37865 (23.3) | 3839 (20.2) | <0.001 |
| Previous PCI | 39785 (21.9) | 36101 (22.2) | 3684 (19.4) | <0.001 |
| Previous CABG | 18812 (10.4) | 17274 (10.6) | 1538 (8.1) | <0.001 |
| Hospital Characteristics | ||||
| Hospital Location | <0.001 | |||
| Rural | 2289 (1.3) | 2085 (1.3) | 204 (1.1) | |
| Suburban | 163203 (89.9) | 146408 (90.0) | 16795 (88.4) | |
| Urban | 16107 (8.9) | 14116 (8.7) | 1991 (10.5) | |
| Hospital Profit Type | 0.237 | |||
| Government | 24276 (13.4) | 21705 (13.3) | 2571 (13.5) | |
| Private/Community | 47866 (26.4) | 42956 (26.4) | 4910 (25.9) | |
| University | 109457 (60.3) | 97948 (60.2) | 11509 (60.6) | |
| Patient Beds: Mean (SD) | 462 (232) | 461 (232) | 467 (238) | <0.001 |
ACS- Acute Coronary Syndrome; CAD- Coronary Artery Bypass Grafting; CABG- Coronary Artery Bypass Grafting; CHF- Congestive