Kraev et al identified risk factors associated with poor long-term survival following cardiac surgery with cardiopulmonary bypass. The authors are from Albany Medical College, Oregon Health & Science University, and Oregon State University.

Survival period: 2 years after surgery


Risk factors associated with poor survival:

(1) older age (> 65 years will be used in the implementation)

(2) history of stroke

(3) emergency surgery

(4) prolonged time on bypass

(5) respiratory failure in postoperative period

(6) hyperbilirubinemia (especially when > 2.8 mg/dL)

(7) history of treated diabetes mellitus


Risk factors for hyperbilirubinemia:

(1) decreased body mass index

(2) history of congestive heart failure

(3) heparin therapy before the operation

(4) amount of blood transfused

(5) bleeding

(6) postoperative renal failure

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