Objectives: The objective of this study was to compare the outcomeof isolated coronary artery bypass grafting surgery in patients ≥ 70 yearswith those < 70 and identify the risk factors that may adversely affectmorbidities and mortality in patients aged seventy years and older.Methods: The cardiac surgery database of the Nasser Institute was used toobtain the characteristics of patients undergoing coronary artery bypassgrafting between January 2009 and December 2011. The patients weredivided into those ≥ 70 years of age and those < 70 years old. The data ofthese patients were retrospectively collected in a dedicated database. Manypreoperative, operative and postoperative assessment were included so astheir effect could be studied on the proposed findings for the analysis of postoperative morbidities, mortality, length of stay in ICU & in hospital.Results: During the study period, 220 cases of isolated coronary arterybypass grafting were carried out. The hospital mortality for patients aged 70and over was 5 (4.55%) out of 110 while that of patients < 70 years of agewas 3 (2.73%) out of 110 (p 0.471). Apart from a longer duration ofmechanical ventilation in elderly patients, the frequency of other majorcomplications was comparable in both groups. The average length ofpostoperative stay in ICU for the elderly patients was 1.96 ± 1.43 nightscompared to 1.46 ± 1.09 nights for the younger group (p 0.004). The averagelength of postoperative stay in hospital for the elderly patients was 10.47 ±5.17 days compared to 8.94 ± 1.99 days for the younger group (p 0.004).Conclusion: This study supports the continued performance of coronaryartery bypass grafting in patients ≥ 70 years. Advanced age alone should notdeter a cardiac surgeon from offering such a potentially beneficialintervention.