Preoperative Clinical Severity Score of Higgins et al in Coronary Artery Bypass Patients

Is the patient being evaluated for coronary artery bypass surgery?

Age of the patient

Body weight

Is this an emergency surgery?

Is this a 'redo' operation on the heart?

Has the patient had prior vascular surgery?

Has the patient had surgery for aortic valve stenosis in the past?

Does the patient have severe left ventricular dysfunction?

Does the patient have mitral valve insufficiency?

Does the patient have chronic obstructive lung disease being treated with bronchodilating agents?

Does the patient have diabetes mellitus being treated with an oral agent or insulin therapy?

Does the patient have cerebrovascular disease?

Hematocrit (enter from 0 to 100)

Serum creatinine