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1 Presented at the 30th Annual Meeting of the German Society for Cardiac, Thoracic and Vascular Surgery, Leipzig, Germany, Feb 18-21, 2001
Appendix A
Variables included in the logistic regression model:
Demographic
Gender, Age (years) at operation, weight, height, body mass index, obesity (men: height in cm - 90, women: height in cm - 100)
Cardiac comorbidity
NYHA (l = mild, 2 = mild symptoms, 3 = symptoms with normal activities, 4a = severe with symptoms at rest, 4b = unstable angina), Holper (l = mild, 2 = mild symptoms at higher degree of physical stress, 3 = symptoms at mid degree of physical stress, 4 = symptoms at low degree of physical stress, 5 = stable out of unstable angina, 6 = beginning unstable angina, 7 = unstable angina, 8 = cardiogenic shock), severe heart failure in history, subjective impression of heart failure, clinical sign of heart failure, dyspnea at exercise, dyspnea at rest, exercise-related angina, angina at rest, treatment for unstable angina (0 = neither oral, nor i. v.-medication. l = oral medication, 2 = intravenous medication), pathologic valvular findings without necessity for surgical treatment, urgency of operation (elective, urgent, emergent, emergent + CPR)
Left ventricular function
Normal left ventricular size, left ventricular hypertrophy, left ventricular dilatation, left ventricular hypokinesia, left ventricular akinesia, left ventricular aneurysm, systolic aortic pressure, diastolic aortic pressure, mean aortic pressure, left ventricular systolic pressure, left ventricular end diastolic pressure, left ventricular function qualifier (0 = good, l = fair, 2 = bad). Ejection fraction was available for only 63 % of all patients, acute myocardial infarction, chronic pulmonary edema, acute pulmonary edema, cardiogenic shock
Preoperative drugs
Diuretics, ACE inhibitors, antibiotics, aspirin, digitalis, β-blocker, calcium antagonists, anticoagulation, antiarrhythmic agents, any preoperative drug
Non-cardiac comorbidity
Smoking, diabetes, hyperlipoproteinemia, hypertension, hyperuricemia, positive family history, any of the known “risk” factors, syncope, embolism, gastrointestinal disease, extracardiac vascular disease, calcified aortic wall, pulmonary obstructive disease, pulmonary restrictive disease, any pulmonary disease, renal disease, dialysis dependency, neurological disease
Coronary status
Number of affected vessels, diffuse arteriosclerotic affection of coronary arteries, left main disease, dominant vessel, number of coronary vessels disease > 50 %, > 70 %, > 90 %, 100 % stenosis, number of coronary systems disease > 50 %, > 70 %, > 90 %, 100 % stenosis, stenosis of LAD > 50 %, > 70 %, > 90 %, 100 %, stenosis of RCA > 50 %, > 70 %, > 90 %, 100 %, stenosis of Circumflex artery > 50 %, > 70 %, > 90 %, 100 %, diagonals
Preoperative rhythm
Sinus rhythm, atrial fibrillation, ventricular tachycardia, pacemaker, ventricular ectopic beats
Previous procedures
PTCA, coronary stent implantation, laser ablation, complication of PTCA, unsuccessful PTCA, bypass occlusion, bypass stent implantation, thrombolytic therapy (within the last 14 days), reoperation for CABG, number of previously performed CABG procedures.
Surgical strategy
Use of IMA, incomplete revascularization, surgeon
Brigitte R. Osswald, MD
Department of Cardiac Surgery University of Heidelberg
Im Neuenheimer Feld 110
69120 Heidelberg
Germany
Telefon: +49 (6221) 56-6111
Fax: +49 (6221) 56-5585
eMail: Brigitte_osswald@med.uni-heidelberg.de