worldwide prevalence and incidence of ectopic …€¦ · · 2016-06-27worldwide prevalence and...
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WorldwideWorldwide PrevalencePrevalence andandIncidence of Incidence of EctopicEctopic PregnancyPregnancy
A A ProtocolProtocol For A For A SystematicSystematic ReviewReview
Dr. Dr. EsraEsra ESIM BUYUKBAYRAKESIM BUYUKBAYRAKIstanbulIstanbul--TurkeyTurkey
TutorTutor: Dr. : Dr. LaleLale SaySay
WHO/GFMER/IAMANEHWHO/GFMER/IAMANEHPostgraduate Training Course in Reproductive HealthPostgraduate Training Course in Reproductive Health
Geneva 2004Geneva 2004
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OutlineOutline
DefinitionDefinitionBackgroundBackgroundObjectiveObjectiveMethodologyMethodologySummarySummary
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DEFINITIONDEFINITION
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PregnancyPregnancy in in whichwhich the implantation of the implantation of the the fertilisedfertilised eggegg occursoccurs outsideoutside the the uterineuterine cavitycavity, , mostmost frequentlyfrequently in the in the fallopianfallopian tube.tube.
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BACKGROUNDBACKGROUND
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EP EP shouldshould bebe consideredconsidered a relevant public a relevant public healthhealth indicatorindicator
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Presents as an acute Presents as an acute emergency and a life emergency and a life threatening eventthreatening event
Providing an overall Providing an overall picture of the capacity picture of the capacity of a health system to of a health system to deal with the diagnosis deal with the diagnosis and treatment of and treatment of emergency situationsemergency situations
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EP EP isis a a leadingleading cause of cause of maternalmaternalmortalitymortality andand morbiditymorbidity
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Responsible for thousands of hospital Responsible for thousands of hospital admissions, surgical interventions and admissions, surgical interventions and blood transfusions.blood transfusions.
Accounts for a sizeable proportion of Accounts for a sizeable proportion of infertility and infertility and ectopicectopic recurrence.recurrence.
Accounts for up to 10% of all maternal Accounts for up to 10% of all maternal deaths.deaths.
KamwendofKamwendof et al. et al. SexSex TransTrans Inf. 2000; 76 ; 28Inf. 2000; 76 ; 28--32.32.
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RiskRisk FactorsFactors
PreviousPrevious EPEPPreviousPrevious tubaltubalsurgerysurgery andand/or /or documenteddocumented tubaltubalpathologypathologyIn utero In utero diethylstilbestroldiethylstilbestrol(DES) (DES) exposure
PreviousPrevious genitalgenitalinfections (PID, infections (PID, chlamydia, chlamydia, gonorrhoeagonorrhoea))LifetimeLifetime sexualsexualpartnerpartner >1>1CurrentCurrent IUD usageIUD usageInfertilityInfertilitySmoking
exposure
Smoking
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EctopicEctopic PregnancyPregnancy
InfertilityInfertility AssistedAssistedReproductive Reproductive TechnologiesTechnologies
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The proportion ofThe proportion of EP EP afterafter IVF IVF ranges ranges fromfrom 4% to 11%4% to 11%
As the As the numbernumber of ART of ART attemptsattemptssteadilysteadily risesrises throughoutthroughout the the
world, all world, all centerscenters are are confrontedconfrontedwithwith the the problemproblem of EP.of EP.
DubissonDubisson J et J et allall. . FertilFertil SterilSteril. 1991; 56(4): 686. 1991; 56(4): 686--690.690.
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DifficultiesDifficulties in in determinationdetermination of of worldwideworldwide EP EP prevalenceprevalence andand
incidenceincidence
DifferentDifferent denominatorsdenominators
UnderestimationUnderestimation
OverestimationOverestimation
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Variation in availability of medical Variation in availability of medical surveillance resourcessurveillance resources
UnderdeclarationUnderdeclaration of patients who died of patients who died due to EP before receiving a diagnosis due to EP before receiving a diagnosis and treatmentand treatment
Many reports have been based upon Many reports have been based upon samples not representative of general samples not representative of general population.population.
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DifferentDifferent denominatorsdenominators
Due to Due to individualindividual definitionsdefinitions of the of the denominatordenominator reportedreported, the incidence of , the incidence of EP has been EP has been expressedexpressed in in variousvarious waysways
thatthat are are difficultdifficult to compareto compare
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ExamplesExamples of of reportedreported incidence rates of incidence rates of EPEP
Region Incidence rate
England-Wales 12.4/ 1000 reported pregnancy
Beijing-China 0.52/ 1000 women of reproductive age
Nigeria 1.68/ 100 total births
Ghana 4 %
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UnderestimationUnderestimation of EP;of EP;
SpontaneousSpontaneous abortions abortions maymay representrepresentselfself--resolvingresolving
ChemicalChemical pregnanciespregnancies extraextra--uterineuterinepregnanciespregnancies
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OverestimationOverestimation of EP;of EP;
IllegallyIllegally terminatedterminated andand unreportedunreportedpregnanciespregnancies
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WhyWhy isis itit important to important to estimateestimate EP EP incidence ?incidence ?
ItIt isis important to important to estimateestimate the the burdenburdenof the EP of the EP soso thatthat the planning of the planning of medicalmedical care care andand public public healthhealth policiespoliciescancan bebe betterbetter informedinformed..
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OBJECTIVE OBJECTIVE
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The information of worldwide EP The information of worldwide EP incidences are widely dispersed in incidences are widely dispersed in the literature and comparisons are the literature and comparisons are
difficult to make. difficult to make.
For this reason, we will conduct a For this reason, we will conduct a systematic review to systematic review to summarisesummarise all all
available information on the available information on the prevalence and incidence of EPprevalence and incidence of EP..
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METHODOLOGYMETHODOLOGY
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StudyStudy DesignDesign
AnyAny studystudy design design providingproviding prevalenceprevalenceor incidence rates for EP in or incidence rates for EP in anyanypopulation population willwill bebe assessedassessed..
EP EP couldcould bebe diagnoseddiagnosed by by clinicalclinical or or laboratorylaboratory examinationexamination or or selfself--reportedreported..
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SelectionSelection CriteriaCriteria
inclusion inclusion criteriacriteria
exclusion exclusion criteriacriteria
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Inclusion Inclusion criteriacriteria;;
All relevant All relevant studiesstudies relatedrelated withwith EP EP prevalenceprevalence or incidence,or incidence,
In In anyany languagelanguage
publishedpublished fromfrom 1997 to 2002.1997 to 2002.
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Exclusion Exclusion criteriacriteria;;
StudiesStudies withwith no data,no data,StudiesStudies withwith <200 participants,<200 participants,StudiesStudies withoutwithout anyany source of data source of data thatthatcancan bebe tractedtracted,,StudiesStudies referringreferring to data to data collectedcollected fromfrombeforebefore 1990,1990,StudiesStudies wherewhere no dates for data no dates for data collection collection periodsperiods are are availableavailable. .
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Type of participantsType of participants
WomenWomen whowho are are pregnantpregnant or or withinwithin 42 42 daysdays of of terminationtermination of of pregnancypregnancy or or womenwomen in reproductive age.in reproductive age.
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Type of Type of outcomeoutcome
EctopicEctopic pregnancypregnancy
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SearchSearch strategystrategy
ElectronicElectronic databasesdatabases searchingsearching((MedlineMedline, , PoplinePopline, , CochraneCochrane databasedatabase of of systematicsystematic reviewsreviews, , CochraneCochrane controlledcontrolled trial trial registerregister, , RegionalRegional WHO WHO onlineonlinedatabasesdatabases, etc.), etc.)
OtherOther electronicelectronic searchingsearching((ExistingExisting web pages web pages fromfrom ministriesministries of of healthhealth in all countries, in all countries, internetinternet searchsearch))
Hand Hand andand referencereference searchingsearchingPersonalPersonal contacts contacts andand specificspecificstrategiesstrategies..
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Description of Description of studiesstudies
A table with the characteristics of the A table with the characteristics of the included studies will be prepared containing included studies will be prepared containing the methods, participants and outcomes the methods, participants and outcomes studied.studied.
This table will show the studies listed This table will show the studies listed chronologically by year of publication and chronologically by year of publication and within each year the order will be within each year the order will be alphabetical.alphabetical.
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MethodsMethods of of ReviewReview
ReferenceReference manager manager bibliographicbibliographic software software willwillbebe usedused to store the to store the studiesstudies..
AllAll identifiedidentified studiesstudies accordingaccording to the to the inclusion inclusion criteriacriteria willwill bebe evaluatedevaluated initiallyinitially by by titlestitles/abstracts (/abstracts (screeningscreening formform).).
FollowingFollowing initial initial screeningscreening, , fullfull--textstexts of of eligibleeligiblestudiesstudies willwill bebe evaluatedevaluated..
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SUMMARYSUMMARY
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EP is an important public health EP is an important public health problem.problem.
The true extent of this problem is not The true extent of this problem is not known.known.
The best way to determine the extent is The best way to determine the extent is a systematic review.a systematic review.
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This This studystudy aimedaimed to to developdevelop a a protocolprotocolto to conductconduct a a systematicsystematic reviewreview on on incidence incidence andand prevalenceprevalence of EP.of EP.