keywords computed tomography
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Author(s):  
Karla Cristina Spadafora ◽  
Erik Lima ◽  
Felipe Favaro Capeleti ◽  
Rafael Eidi Goto ◽  
Homero Jose Farias e Melo ◽  
...  

Introdução: A utilização de meios de contraste, muitas vezes, permite uma análise mais adequada da morfologia e identificação de doenças. O meio de contraste é comumente administrado por uma bomba de infusão, garantindo fluxo contínuo. No entanto, essa administração automatizada pode aumentar a incidência dos extravasamentos, acarretando a vazão de grandes volumes em um curto período de tempo. Objetivo: correlacionar fatores de risco para o extravasamento do meio de contraste a base de iodo com as barreiras utilizadas e medidas adotadas quando instalada a ocorrência. Métodos: revisão sistematizada utilizando as bases de dados Pubmed e Scielo, nas quais formam analisados 16 artigos dos últimos 10 anos. Resultados: embora pequena a ocorrência, entre 0,01 a 0,09% dos exames contrastados realizados, o extravasamento é um assunto constante nos centros de imagens radiológicas, sendo de maior incidência em exames de tomografia computadorizada. Um adequado acesso venoso juntamente com meio de contraste que favoreça a infusão estão entre os principais fatores para a transcorrência adequada deste tipo de procedimento. Conclusão: elaboração e aplicação de protocolos que assegurem a não ocorrência, assim como os que abranjam a diminuição das complicações como a síndrome compartimental, proporcionará o aumento de satisfação ao serviço.  Casos em que a prevenção não se faz suficiente, uma adequada abordagem que vise diminuir maiores efeitos indesejáveis, diferenciar o serviço oferecido e a credibilidade dos profissionais envolvidos. Palavras chave: Tomografia computadorizada, Meios de contraste, Diagnóstico por imagem, Extravasamento de materiais terapêuticos e diagnósticos Abstract Introduction: The use of contrast media often allows a more adequate analysis of the morphology and identification of diseases. Contrast medium is commonly administered by an infusion pump, ensuring continuous flow. However, this automated administration can increase the incidence of overflows, resulting in the flow of large volumes in a short period of time. Objective: a systematic review of the correlation of risk factors for extravasation of iodine- based contrast medium, with the most used barriers, as well as measures adopted when such an occurrence occurs. Methods: analysis and review of correlated data from PUBMED and Scielo platforms and websites. Eleventh articles were selected, of these, after reading the abstracts and adequacy of objectives, 16 articles from the last 10 years were used. Results: although the occurrence is small, between 0.01 and 0.09% of contrast-enhanced exams performed, extravasation is a constant issue in radiological imaging centers, with higher incidence in computed tomography exams. The study seeks to elucidate the direct correlation between venous access and the conditions of the contrast medium used, which together favor the infusion, especially when specific risk factors are identified early, thus favoring the proper course of this procedure. Conclusion: elaboration and application of protocols that ensure the non-occurrence, as well as those that cover the reduction of complications such as compartment syndrome, will provide increased satisfaction with the service. In cases where prevention is not enough, an adequate approach aimed at reducing further undesirable effects will differentiate the service offered and the credibility of the professionals involved. Keywords: Computed tomography, Contrast media, Diagnostic imaging, Extravasation of diagnostic and therapeutic materials  


2021 ◽  
Vol 15 (6) ◽  
pp. 1139-1144
Author(s):  
S. Nisar ◽  
F. Farooq ◽  
Rabia . ◽  
M. N. Anjum ◽  
M. Fatima ◽  
...  

Aim: To compare the high resolution computed tomography features in Covid and other viral pneumonia presented in recent literature. Methodology: For this study, total 25 studies were included which follow the Preferred Reporting Items guideline for conducting this systematic review analysis (PRISMA). Electronic articles of Covid from January 2020 to April 2020 were searched on PUB Med, online Willey library, and Science Direct site by using keywords related to CT imaging and Corona virus. For pneumonia related studies articles from year 2010 to year 2017 were included for better comparison. Results: After pooling data, it was observed that bilateral involvement was found in 76.8% of studies, 68.4% GGO, and 62.2% ratio was occupied by peripheral distribution in different studies. Total 48.7% of studies were concerned about the ground glass opacity (GGO) consolidation, 33.2% observed consolidation, 27.7% look for crazy paving pattern, and 25% of studies observed mixed central and peripheral distribution. Conclusion: Study concludes that the chest CT finding results of selected studies for Covid and pneumonia cases were overlapping. Only high prevalence related to upper and lower lobe involvement and peripheral distribution was relatively high in Covid studies. Keywords: Computed tomography, pneumonia viral disease, Sars Covid-19


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