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Table 2 Mortality evidence supporting intra-aortic balloon pump use in cardiogenic shock complicating an acute myocardial infarction

From: Clinical review: mechanical circulatory support for cardiogenic shock complicating acute myocardial infarction

Study

Patients

IABPa

No IABPa

P value

Pre-thrombolysis

    

   O'Rourke et al. [22] (1981)

30

50%

43%

0.09

   Flaherty et al. [23] (1985)

20

52%

53%

-

Thrombolysis era

    

   Kovack et al. [25] (1997)

335

93%

37%

0.0002

   GUSTO-I [26] (1997)

310

47%b

60%b

0.06

   SHOCK [27] (2000)

856

47%

63%

0.007

   NRMI-2 [28] (2001)

12,054c

49%

67%

-

Reperfusion by PCI

    

   NRMI-2 [28] (2001)

7,881c

47%

42%

-

  1. aIn-hospital mortality expressed as a percentage. bThirty-day mortality. cTotal number of patients in the study, including those with no reperfusion therapy, was 23,180. GUSTO-I, Global Utilization of Streptokinase and Tissue Plasminogen Activator for Occluded Coronary Arteries; IABP, intra-aortic balloon pump; NRMI-2, National Registry of Myocardial Infarction 2; PCI, percutaneous coronary intervention; SHOCK, Should We Emergently Revascularize Occluded Coronary Arteries for Cardiogenic Shock.
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