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Feasibility of renal resistive index measurements performed by an intermediate and novice sonographer in a volunteer population
BACKGROUND: The Doppler-derived renal resistive index (RRI) is emerging as a promising bedside tool for assessing renal perfusion and risk of developing acute kidney injury in critically ill patients. It is not known what level of ultrasonography competence is needed to obtain reliable RRI values. O...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer Milan
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7237552/ https://www.ncbi.nlm.nih.gov/pubmed/32430724 http://dx.doi.org/10.1186/s13089-020-00175-6 |
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author | Renberg, Mårten Kilhamn, Naima Lund, Kent Hertzberg, Daniel Rimes-Stigare, Claire Bell, Max |
author_facet | Renberg, Mårten Kilhamn, Naima Lund, Kent Hertzberg, Daniel Rimes-Stigare, Claire Bell, Max |
author_sort | Renberg, Mårten |
collection | PubMed |
description | BACKGROUND: The Doppler-derived renal resistive index (RRI) is emerging as a promising bedside tool for assessing renal perfusion and risk of developing acute kidney injury in critically ill patients. It is not known what level of ultrasonography competence is needed to obtain reliable RRI values. OBJECTIVE: The aim of this study was to evaluate the feasibility of RRI measurements by an intermediate and novice sonographer in a volunteer population. METHODS: After a focused teaching session, an intermediate (resident), novice (medical student) and expert sonographer performed RRI measurements in 23 volunteers consecutively and blinded to the results of one another. Intraclass correlation coefficients and Bland–Altman plots were used to evaluate interobserver reliability, bias and precision. RESULTS: Both non-experts were able to obtain RRI values in all volunteers. Median RRI in the population measured by the expert was 0.58 (interquartile range 0.52–0.62). The intraclass correlation coefficient was 0.96 (95% confidence interval 0.90–0.98) for the intermediate and expert, and 0.85 (95% confidence interval 0.69–0.94) for the novice and expert. In relation to the measurements of the expert, both non-experts showed negligible bias (mean difference 0.002 [95% confidence interval − 0.005 to 0.009, p = 0.597] between intermediate and expert, mean difference 0.002 [95% confidence interval − 0.011 to 0.015, p = 0.752] between novice and expert) and clinically acceptable precision (95% limits of agreement − 0.031 to 0.035 for the intermediate, 95% limits of agreement − 0.056 to 0.060 for the novice). CONCLUSIONS: RRI measurements by both an intermediate and novice sonographer in a volunteer population were reliable, accurate and precise after a brief course. RRI is easy to learn and feasible within the scope of point-of-care ultrasound. |
format | Online Article Text |
id | pubmed-7237552 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Springer Milan |
record_format | MEDLINE/PubMed |
spelling | pubmed-72375522020-05-27 Feasibility of renal resistive index measurements performed by an intermediate and novice sonographer in a volunteer population Renberg, Mårten Kilhamn, Naima Lund, Kent Hertzberg, Daniel Rimes-Stigare, Claire Bell, Max Ultrasound J Original Article BACKGROUND: The Doppler-derived renal resistive index (RRI) is emerging as a promising bedside tool for assessing renal perfusion and risk of developing acute kidney injury in critically ill patients. It is not known what level of ultrasonography competence is needed to obtain reliable RRI values. OBJECTIVE: The aim of this study was to evaluate the feasibility of RRI measurements by an intermediate and novice sonographer in a volunteer population. METHODS: After a focused teaching session, an intermediate (resident), novice (medical student) and expert sonographer performed RRI measurements in 23 volunteers consecutively and blinded to the results of one another. Intraclass correlation coefficients and Bland–Altman plots were used to evaluate interobserver reliability, bias and precision. RESULTS: Both non-experts were able to obtain RRI values in all volunteers. Median RRI in the population measured by the expert was 0.58 (interquartile range 0.52–0.62). The intraclass correlation coefficient was 0.96 (95% confidence interval 0.90–0.98) for the intermediate and expert, and 0.85 (95% confidence interval 0.69–0.94) for the novice and expert. In relation to the measurements of the expert, both non-experts showed negligible bias (mean difference 0.002 [95% confidence interval − 0.005 to 0.009, p = 0.597] between intermediate and expert, mean difference 0.002 [95% confidence interval − 0.011 to 0.015, p = 0.752] between novice and expert) and clinically acceptable precision (95% limits of agreement − 0.031 to 0.035 for the intermediate, 95% limits of agreement − 0.056 to 0.060 for the novice). CONCLUSIONS: RRI measurements by both an intermediate and novice sonographer in a volunteer population were reliable, accurate and precise after a brief course. RRI is easy to learn and feasible within the scope of point-of-care ultrasound. Springer Milan 2020-05-20 /pmc/articles/PMC7237552/ /pubmed/32430724 http://dx.doi.org/10.1186/s13089-020-00175-6 Text en © The Author(s) 2020 Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Original Article Renberg, Mårten Kilhamn, Naima Lund, Kent Hertzberg, Daniel Rimes-Stigare, Claire Bell, Max Feasibility of renal resistive index measurements performed by an intermediate and novice sonographer in a volunteer population |
title | Feasibility of renal resistive index measurements performed by an intermediate and novice sonographer in a volunteer population |
title_full | Feasibility of renal resistive index measurements performed by an intermediate and novice sonographer in a volunteer population |
title_fullStr | Feasibility of renal resistive index measurements performed by an intermediate and novice sonographer in a volunteer population |
title_full_unstemmed | Feasibility of renal resistive index measurements performed by an intermediate and novice sonographer in a volunteer population |
title_short | Feasibility of renal resistive index measurements performed by an intermediate and novice sonographer in a volunteer population |
title_sort | feasibility of renal resistive index measurements performed by an intermediate and novice sonographer in a volunteer population |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7237552/ https://www.ncbi.nlm.nih.gov/pubmed/32430724 http://dx.doi.org/10.1186/s13089-020-00175-6 |
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