1. Date of download: 5/30/2016 Copyright © 2016 American Medical Association. All rights reserved. From: Elective Intra-aortic Balloon Counterpulsation During High-Risk Percutaneous Coronary Intervention: A Randomized Controlled Trial JAMA. 2010;304(8):867-874. doi:10.1001/jama.2010.1190 CABG indicates coronary artery bypass graft; IABP, intra-aortic balloon pump; MACCE, major adverse cardiac and cardiovascular events; PCI, percutaneous coronary intervention. a Of the 147 patients who received no planned IABP insertion prior to PCI, 18 required rescue IABP insertion. Figure Legend:

2. Date of download: 5/30/2016 Copyright © 2016 American Medical Association. All rights reserved. From: Elective Intra-aortic Balloon Counterpulsation During High-Risk Percutaneous Coronary Intervention: A Randomized Controlled Trial JAMA. 2010;304(8):867-874. doi:10.1001/jama.2010.1190 Mortality at 6 months was numerically lower in the elective intra-aortic balloon pump (IABP) group than in the no planned IABP group, although this was not statistically significant (4.6% vs 7.4%, P =.32 by the χ 2 test). Figure Legend:

3. Date of download: 5/30/2016 Copyright © 2016 American Medical Association. All rights reserved. From: Elective Intra-aortic Balloon Counterpulsation During High-Risk Percutaneous Coronary Intervention: A Randomized Controlled Trial JAMA. 2010;304(8):867-874. doi:10.1001/jama.2010.1190 BCIS-1 indicates Balloon Pump–Assisted Coronary Intervention Study; CI, confidence interval; GFR, glomerular filtration rate; Gp, glycoprotein; IABP, intra-aortic balloon pump; OR, odds ratio. Vertical dashed line indicates overall estimate. Elective IABP insertion had no significant effect on the occurrence of major adverse cardiac and cardiovascular events in the overall study population or any of the predefined groups. a Median estimated GFR, 59.1 mL/min. b For clarity, only the comparison between BCIS-1 Jeopardy Scores 8 and 12 are shown; there was no significant interaction between Jeopardy Scores 8 vs 10 or 10 vs 12. Figure Legend: