Dear Editor： Chronic total occlusions （CTOs） of the coronary artery are commonly encountered complex lesionst11. Percutaneous coronary intervention （PCI） for CTO is technically challenging due to low procedural ...Dear Editor： Chronic total occlusions （CTOs） of the coronary artery are commonly encountered complex lesionst11. Percutaneous coronary intervention （PCI） for CTO is technically challenging due to low procedural success ratesTM. Microcatheter is one of the important devices for treatment of CTOTM. It has been widely used attributed to the excellent crossability whenever angula- tion and tortuousity of the coronary artery is encoun- tered. In the process, the microcatheter has to be withdrawn from the guide wire after the wire is proved to locate in the true lumen.展开更多
Background Judkins catheter is widely used in recent years, for clinical angiography and intervention of most normal coronary arteries, but still incapable to deal with the problems caused by difficult coronary artery...Background Judkins catheter is widely used in recent years, for clinical angiography and intervention of most normal coronary arteries, but still incapable to deal with the problems caused by difficult coronary artery （DCA）. DCA may influence the procedure of diagnosis and intervention of ischemic heart disease （IHD）. To cope with different subtypes of DCA, catheters like Amplatz, EBU, Leya, etc. were born at that moment, but these stan- dard catheters are used just in special cases and have so many sequences that a local hospital may not be able to keep all of them available routinely at any time. To overcome this problem, some centers perform angiography and intervention using modified catheters based on their own condition and have obtained some experiences. Catheter modification techniques used in these years are reviewed, and are stated respectively based on dealing with different subtypes of DCA to provide practical guidance for clinical diagnosis and intervention for IHD patients having DCA.展开更多
文摘Dear Editor： Chronic total occlusions （CTOs） of the coronary artery are commonly encountered complex lesionst11. Percutaneous coronary intervention （PCI） for CTO is technically challenging due to low procedural success ratesTM. Microcatheter is one of the important devices for treatment of CTOTM. It has been widely used attributed to the excellent crossability whenever angula- tion and tortuousity of the coronary artery is encoun- tered. In the process, the microcatheter has to be withdrawn from the guide wire after the wire is proved to locate in the true lumen.
基金supported by National Natural Science Foundation of China(No.81641058)
文摘Background Judkins catheter is widely used in recent years, for clinical angiography and intervention of most normal coronary arteries, but still incapable to deal with the problems caused by difficult coronary artery （DCA）. DCA may influence the procedure of diagnosis and intervention of ischemic heart disease （IHD）. To cope with different subtypes of DCA, catheters like Amplatz, EBU, Leya, etc. were born at that moment, but these stan- dard catheters are used just in special cases and have so many sequences that a local hospital may not be able to keep all of them available routinely at any time. To overcome this problem, some centers perform angiography and intervention using modified catheters based on their own condition and have obtained some experiences. Catheter modification techniques used in these years are reviewed, and are stated respectively based on dealing with different subtypes of DCA to provide practical guidance for clinical diagnosis and intervention for IHD patients having DCA.
