CT-DSA融合成像在左心耳封堵术中的应用OA

Objective:To investigate the efficacy and safety of CT-DSA fusion imaging in left atrial appendage occlusion(LAAO).Methods:A total of 110 patients undergoing LAAO were enrolled and randomly assigned to the CT-DSA fusion group(55 cases)and the standard DSA group(55 cases).CT-DSA fusion group underwent LAAO surgery guided by CT-DSA fusion images,while the standard DSA group underwent LAAO surgery guided by DSA.The procedural success rate,contrast agent usage,radiation dose,procedural duration,perioperative complications and follow-up outcomes at 6 months were compared between the two groups.Results:The CT-DSA fusion group showed a higher procedural success rate(96.36%vs.83.64%,P=0.026),less contrast media usage[(75.12±10.11)mL vs.(95.32±15.21)mL,P<0.001],lower radiation dose[(2 515.25±124.33)mGy·cm2 vs.(2 854.44±155.32)mGy·cm2,P<0.001],and shorter procedural duration[(50.1±10.21)min vs.(60.35±12.17)min,P=0.02],and lower incidence of stroke at 6 months(0 vs.5.45%)compared to DSA group.There were no significant differences in perioperative complications,including pericardial effusion,device-related thrombus,or device embolization(all P>0.05).Conclusions:CT-DSA fusion imaging significantly improves the success and safety of LAAO compared to standard DSA imaging.Integration of CT-DSA fusion imaging into standard practice for LAAO procedures is recommended to optimize patient outcomes.