Conclusion: 5F catheter has advantages of less vascular complication, easy to stop bleeding, less bedrest time and less pain.Therefore it can be a choice.

• 结论：应用5F导管行冠状动脉造影与6F导管在手术成功率及手术时间方而相近，由于其容易止血、血管并发症少、卧床时间短、患者痛苦小的优点，可选择应用。