SonoSite S-Cath - Gestational Age Tables

Chapter 7: References 133
References
Estimated Date of Delivery (EDD) by Average
Ultrasound Age (AUA)
Resultsaredisplayedasmonth/day/year.
EDD=systemdate+(280days–AUAindays)
Estimated Date of Delivery (EDD) by Last
Menstrual Period (LMP)
Thedateenteredintothepatientinformationfor
LMPmustprecedethecurrentdate.
Resultsaredisplayedasmonth/day/year.
EDD=LMPdate+280days
Estimated Fetal Weight (EFW)
Hadlock,F.,etal.“EstimationofFetalWeight
withtheUseofHead,Body,andFemur
Measurements,AProspectiveStudy.”American
JournalofObstetricsandGynecology,151:3
(February1,1985),333‐337.
Hansmann,M.,etal.UltrasoundDiagnosisin
ObstetricsandGynecology.NewYork:
Springer‐Verlag,(1985),1 54.
OsakaUniversity.Ultrasound
inObstetricsand
Gynecology.(July 20,1990),103‐105.
ShepardM.J.,V.A.Richards,R.L.Berkowitz,et
al.“An EvaluationofTwoEquationsfor
PredictingFetalWeightbyUltrasound.”
AmericanJournalofObstetricsandGynecology,142:1
(January1,1982),47‐54.
UniversityofTokyo,Shinozuka,N.FJSUM,etal.
“Standard
ValuesofUltrasonographicFetal
Biometry.”JapaneseJournalofMedicalUltrasonics,
23:12(1996),880,Equation1.
Gestational Age (GA) by Last Menstrual
Period (LMP)
ThegestationalagederivedfromtheLMPdate
enteredonthepatientinformationform.
Resultsaredisplayedinweeksanddays,andis
calculatedasfollows:
GA(LMP)=Systemdate–LMPdate
Gestational Age (GA) by Last Menstrual
Period (LMPd) Derived from Established Due
Date (Estab. DD)
SameasGAbyEstab. DD.
Thegestationalagederivedfromthesystem
derivedLMPusingtheEstablishedDueDate
enteredonthepatientinformationform.
Resultsaredisplayedinweeksanddays,andis
calculatedasfollows:
GA(LMPd)=SystemDate–LMPd
Last Menstrual Period Derived (LMPd) by
Established Due Date (Estab. DD)
Resultsaredisplayedasmonth/day/year.
LMPd(Estab. DD)=Estab. DD–280days
Gestational age tables
Abdominal Circumference (AC)
Hadlock,F.,etal.“EstimatingFetalAge:
Computer‐AssistedAnalysisofMultipleFetal
GrowthParameters.”Radiology,152 :(1984),
497‐501.
Hansmann,M.,etal.UltrasoundDiagnosisin
ObstetricsandGynecology. NewYork:
Springer‐Verlag,(1985),431.
UniversityofTokyo,Shinozuka,N.FJSUM,etal.
“StandardValuesofUltrasonographicFetal
Biometry.”Japanese
JournalofMedicalUltrasonics,
23:12(1996),885.