17、).Conclusion:Themanifestationofelectrocardiogramandechocardiography,whichplaceadiagnosticrole,isdifferentinacuteandchronicpulmonaryembolism. Author′s address:DepartmentofCardiology,SecondAffiliatedHospitalofWenzhouMedicalCollege,Wenzhou,Zhejiang,325000,China Ke