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Background To investigate the feasibility and safety oftransradial coronary angiography in outpatients.Methods From September 2010 to March 2012, 287 outpatients from our cardiovascular department, with precordial discomfort or with a purpose of re-examination after coronary stenting, were recruited.All the participants signed the informed consent of receiving the coronary angiography (CAG), and 600mg clopidogrel and 300 aspirin were routinely prescribed to each subject.