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Interobserver variability when measuring the abdominal aorta with ultrasound: A comparison using the longitudinal and transverse axes
Jönköping University, School of Health and Welfare, HHJ, Dep. of Natural Science and Biomedicine.
Jönköping University, School of Health and Welfare, HHJ, Dep. of Natural Science and Biomedicine.
2018 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesisAlternative title
Observartörsvariation vid mätning av bukaortan med ultraljud : en jämförelse mellan mätvärden observerade i de longitudinella och transversella snitten (Swedish)
Abstract [en]

A rupturing abdominal aortic aneurysm (AAA) has a mortality rate of 50% while an elective repair has a mortality rate of 3-8%. Screening programmes with ultrasound are used in some countries to detect AAA at an early stage. Ultrasound is however very observer bias and dependent on the observer's experience. The study was performed in Vietnam, a country that have experienced exceptional economic growth with increasing risk factors for cardiovascular diseases but has no national screening programme. The aim of this study was to examine the interobserver variability when measuring the abdominal aorta with ultrasound on young adults in Vietnam. The abdominal aorta was measured in the longitudinal and the transverse axis by two different observers using the leading edge to leading edge method. Participants in this study were 31 voluntary students, 16 men and 15 women in the ages 18-26 years, from the Da Nang university of medical technology and pharmacy and the design was a cross-sectional study with a quantitative approach. The study showed a significant difference between the longitudinal measurements but not between the transverse measurements. Despite this statistical significance, the observers' differences were within the recommended limit of 5 mm.

Abstract [sv]

 

Ett rupturerande bukaortaaneurysm har en dödlighet på 50% medan förebyggande vaskulär kirurgi har en dödlighet på 3-8%. Screeingprogram med ultraljud används i vissa länder för att upptäcka bukaortaaneurysm i ett tidigt skede innan de rupterar. Ultraljudsundersökningen är dock väldigt beroende på utövarens erfarenhet och utbildning. Studien genomfördes i Vietnam, ett land som genomgått stor ekonomisk tillväxt men även en ökning av riskfaktorer för kardiovaskulära sjukdomar. Vietnam har dock inget nationellt screeningprogram för bukaortaaneurysm. Syftet med studien var att undersöka observatörsvariationen vid mätning av bukaortan med ultraljud på unga vuxna i Vietnam. Populationen var ung för att minska patologiska fynd. Bukaortan mättes med metoden leading edge to leading edge, både i det longitudinella och i det transversella snittet av två olika utövare. Observatörerna var två studenter från Biomedicinska analytikerprogrammet med inriktning klinisk fysiologi, Jönköpings Universitet. Deltagare i studien var 31 frivilliga studenter, 16 män och 15 kvinnor i åldrarna 18-26 år, från Da Nang University of medical technology and pharmacy och designen var en tvärsnittsstudie med kvantitativ ansats. Studien visade en signifikant skillnad i de longitudinella mätningarna men inte i de transversella mätningarna. Trots denna statistiska signifikans var observatörernas differenser inom den rekommenderade gränsen på 5 mm.

Place, publisher, year, edition, pages
2018.
Keywords [en]
Measurement accuracy, screening, abdominal aortic aneurysm, Vietnam
Keywords [sv]
Mätnoggrannhet, screening, bukaortaaneurysm, Vietnam
National Category
Medical Laboratory and Measurements Technologies
Identifiers
URN: urn:nbn:se:hj:diva-40563ISRN: JU-HHJ-BLA-1-20180073OAI: oai:DiVA.org:hj-40563DiVA, id: diva2:1220845
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Available from: 2018-06-27 Created: 2018-06-19 Last updated: 2018-06-27Bibliographically approved

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