简介：BackgroundHospital-acquiredpneumonia(HAP)isthemostcommonandmostseriousnosocomialinfectionforcardiacsurgerypatients,withhighincidenceandfatalityrate1.ItisimportantforcardiacsurgeonstocorrectlyidentifyHAP,assesstheseverity,andthenadjustanti-infectionmethod,whichcanreducethemortalityrate,shortenhospitalizationtime,andreducethewasteofmedicalresources.ThepurposeofthisresearchistoevaluatetheapplicationvalueoflungCTindiagnosisandtreatmentofHAPaftercardiacsurgery.MethodsAretrospectiveanalysiswasconductedforclinicaldataabout76cardiacsurgerypatientswhowerediagnosedwithHAPduringJanuarytoDecember2013.Theclinicaldatamainlyincludedsymptoms,physicalsigns,laboratoryexaminations(suchasroutinebloodtestsandserumprocalcitonin),andlungCTandX-raydata.OurfocusisonthecomparisonbetweenlungCTandX-raydata.ResultsThepositivediagnosticrate,falsenegativerate,andfalsepositiverateoflungCTwere71/76(93.4%),5/76(6.6%),and1/76(1.3%)respectively.ThecoincidencerateofX-rayandCTwas45/76(59.2%),andthefalsenegativerateofX-raywas23/76(30.3%).ConclusionLungCTisbetterthanX-rayindiagnosisofHAPaftercardiacsurgeryandassessmentofseverity,andhasgreatersignificanceforguidingtherationaluseofantibiotics.Therefore,lungCTisworthyofapplicationandpopularization.