实验诊断学(英文版)第一章.ppt
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实验诊断学(英文版)第一章.ppt
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Chapter1GeneralofClinicalLaboratoryLIPingGeneralofclinicallaboratoryPrinciplestoclinicallaboratoryTheinterpretationoflaboratorytestsTheethicalpracticePrincipletoclinicallaboratoryResponsibilitiesCollectionofInformationCollectionofSpecimens(Informedconsent、Adequateprivacy)PerformanceofTestReportingofResultStorageandRetentionofMedicalRecordsAccesstoMedicalRecordsResponsibilitiesThepatient-assurancethequalityandintegralityoftheserviceColleagueandprofessional-maintainprofessionalreputation,aimtocontributetheadvancementofprofessionSociety-contributetothegeneralwell-beingofsociety;complywithrelevantlawsandregulationsofprofessionalactivities.CollectionofinformationIdentifyadequatelypatientsandspecimensEnablethetesttobecorrectlyinterpretedOtherlegitimatepurposesPerformanceofthetestAccreditationprogramPatientsinterestsProcessstandardWorkswithhighskillandcompetenceGoodperformanceoftestsReportingofResultTestresultsareconfidentialunlessdisclosureisauthorized.ReporttheresultscorrectlyandtimelyProvidetheconsultationabouttheselectionandinterpretationoftestsproperlyAccesstoMedicalRecordsclinicianrequestingthetest;thepatient;laboratoryandhospitalstaffifrequiredforthemanagementofthepatient;otherauthorizedindividuals.Whenarequestismadeforaccesstotestresultsbyanauthorizedperson,thelaboratorymustfirstsatisfyitselfastotheidentityofthepersonmakingtherequest.Who?
INTERPRETLABORATORYTESTSelecttestPatientsprepareforsamplingCollectspecimenPre-processofspecimenAnalyzespecimenCheck、reportresultMakeclinicaldecisionBiologicalvariability,improperorinconsistentpreparationImproperorinconsistantCollectionImproperprovisionsuboptimumselectionAnalyticalvariabiltyInadequateRVsMinimizevariabilityNoconfusionandmisunderstandingabouttestresultsTestingCycleBiologicvariatinonEndogenousbiorhythmsforphysiologicparametersDifferentconstitutionalfactorsandlifestyleamongsubjectswithin-subjectvariationsubject-tosubjectvariationBiologicalvariationWidthofthetestsReferencinterval(RI)thediagnosticefficiencyofalaboratorytestlBiologicalrhythmslConstitutionalfactorslExtrinsicfactorsThreetypesofBiologicalrhythmsCircadianRhythmsUltradianRhythmsInfradianRhythmsCycletime24h24hCharacterConsistentPredictableInconsistentUnpredictableunknowsolutionrhythm-adjustedRVsstimulationandsuppressiontestsunknowexampleNumberandactivityofbloodcellgonadalhormonemenstrualcycleBiologicvariationendogenousbiorhythmsforphysiologicparametersDifferentconstitutionalfactorsandlifestyleamongsubjectswithin-subjectvariationsubject-tosubjectvariationBiologicalvariationWidthofthetestsReferencinterval(RI)thediagnosticefficiencyofalaboratorytestlBiologicalrhythmslConstitutionalfactorslExtrinsicfactorsBiologicvariabiltyConstitutionalfactorinfantschildrenadultselderlyrapidphysiologicchanges、hemolysis、bilirubinPlasmaproteinenzymesexhormonesconstantuntilmenopauseinwomenandmiddleageinmenage-relateddifferencesinnutrition、intercurrentdiseaseAgespecificreferencelimitsageAgeBiologicvariabiltyConstitutionalfactorGeneticheterogeneityphenotypicdifferencesDifferentconcentrationofanalyteDifferentreactivitytowardsnucleicacidprobesandantibodiesfalse-negativeMisleadingGeneticheterogeneityBiologicvariabilty-ExtrinsicFactorsvascularinterstitialspacesupinestandH2OSmallanalyteplasmavolumeConcentrationofnondiffusiblanalytehomeostasisofvasculartonerenninaldosteronecatecholaminesPostureBiologicvariabiltyExtrinsicFactorsshiftsinplasmawaterglomerularfiltrationrateurineproductionreleaseofmacromoleculesfromcellsandtissuesExerciseBiologicvariabilty-ExtrinsicFactorsmealrelatedfastingrelatedlRecommendation:
durationoffastingbeforespecimencollectionistypically12hoursTGTCBUNGLU.LacAcetoneGlucagons.DietBiologicvariabiltyExtrinsicFactorsTypesofInterferenceAnalyticalinterferencePhysiologicinterferenceRecommendationRecognizedrugspotentialforoccurrence,withdrawmedicationsbeforesamplingwheneverpossible,Evaluatanysuspiciousresultsinlightofasubjectsmedicationhistory.DrugBiologicvariabilty-ExtrinsicFactorsplasmavolumeerythrocytemassplasmaproteinsynthesisaltereddistributionofcardiacoutputendocrinologicchangeshyperventilationPregnancyBiologicvariation-summaryBiologicalrhythmsCircadian,Ultradian,InfradianrhythmsConstitutinalfactorsGender,age,geneExtrinsicfactorsPosture,Exercise,Diet,Drugs,Pregnancy,Caffeine,Alcoholuse,OralContraceptives,IntercurrentIllnessEstablishandvalidateRVsEstablishclinicalperformancecharacteristicsWhy?
lHelpcliniciantoselectthemosteffectivetestsandtestingstrategieslHelpcliniciantotranslatelaborator
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