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. Author manuscript; available in PMC: 2017 Jun 1.
Published in final edited form as: Ann Thorac Surg. 2016 Apr 30;101(6):2168–2174. doi: 10.1016/j.athoracsur.2016.03.040

Table 4.

Risk factors for death following LVAD implantation.

Risk Factor for Death Phases of Hazard
Early Constant
Hazard ratio p-value Hazard ratio p-value
Age (years) 1.58 < .0001
Body mass index (higher) 1.49 .0003
Not Married 1.93 .0009
History of coronary artery bypass 1.56 .02
Blood urea nitrogen (higher) 1.10 .006 1.06 .01
Total bilirubin (higher) 1.78 .02
Creatinine (higher) 1.10 .001
Ventilator 2.18 .005
INTERMACS Level 1 2.74 .0001
INTERMACS Level 2 1.85 .004
RVAD 5.05 < .0001
Tricuspid regurgitation 1.35* .009
*

Hazard ratio represents the increased risk for one level of increase in tricuspid regurgitation, from mild, to moderate, to severe.

INTERMACS, Interagency Registry for Mechanically Assisted Circulatory Support; LVAD, left ventricular assist device; RVAD, right ventricular assist device.