Limitations of our study are the relatively small size of our series and the lack of definite criteria for selection of patients for this study. As most coronary patients are already being treated with angiotensin receptor blocking agents, the results of our study will not have a major impact on clinical practice. Furthermore, it would have been better to test the predictivevalue of microalbuminuria on prognosis in this category of patients. However, we hope that this study will pioneer further studies on this method.