Coronary artery bypass. Long term-follow-up results

pp 275-281

Abstract

Study objective 
To determine a) Long-term survival (SA) rate, readmission-­free (LRE), reintervention-free (LR]) and combined events­ free (LEC) periods at 1 and 4 year follow-up of a group of patients who underwent isolated cardiac revascularization surgery (CRM); b) To identify independent and specificlong­ term predictors of death (MA), readmission (RE) and reintervention (Rl). 

Research design and methods 
This clinical trial comprised a group of957 patients aged 53 to 73 years, who underwent coronary surgery between Janu­ary 1997 and December 2001 and were followed up between 1 and 4 years. SA rate, LRE, LRI, and LEC were recorded in all patients. 

Results 
Eighty seven percent of the patients were male; the mean follow-up period was 771 (1-1844) days. The outcomes at 1 and 4 years were, respectively: SA rate = 93.5 and 87.8%; LRE = 94.9% and 87.3%; LRI = 97.8% and.94.9% and LEC = 88.8% and 76.3%. The independent MA variables were found to be: age (hazard ratio [HR]: 1.03 [CI 95% 1.01-1.06] p<0.001), severe ventricular dysfunction (HR: 1.94 [CI 95% 192-3.17] p<0.008), high creatinine (HR: 1.88 [CI 95% 1.51-2.33) p<0.001), previous CRM (HR: 2. 79 [CI 95% 1.64-4. 74] p<0.001), emergency CRM (HR: 2.26 [CI 95% 1.44-3.55] p<0.001) and diabetes (HR: 1.59 [CI 95% 1-2.52) p<0.04). Specific RE were: previous TCA (HR: 2.26 [CI 95% 1.39-3.65] p<0.001) and poor coronaryvessels (HR: 1.89 [CI 1.09-3.28] p=0.02). Specific RI were previous TCA (HR: 2.0 [CI 95% 1.1-4.1) p<0.05) and creatinine (HR: 2.1 [CI 95% 1.48-2.9) p<0.001). 

Conclusion/interpretation 
This follow-up study showed a high SA:rate. Almost 90% of the patients did not need readmission or reintervention af­ter 4 years.