Mensuração do volume de fluxo portal em pacientes esquistossomóticos: avaliação da reprodutibilidade do ultra-som Doppler

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Date
2008-10-01Author
Leão, Alberto Ribeiro de Souza [UNIFESP]
Santos, José Eduardo Mourão [UNIFESP]
Moulin, Danilo Sales [UNIFESP]
Shigueoka, David Carlos [UNIFESP]
Colleoni Neto, Ramiro [UNIFESP]
D'Ippolito, Giuseppe [UNIFESP]
Type
ArtigoISSN
0100-3984Is part of
Radiologia BrasileiraDOI
10.1590/S0100-39842008000500007Metadata
Show full item recordAlternative Title
Portal blood flow volume measurement in schistosomal patients: evaluation of Doppler ultrasonography reproducibilityAbstract
OBJECTIVE: To evaluate the reproducibility of Doppler ultrasonography in the measurement of portal blood flow volume in schistosomal patients. MATERIALS AND METHODOS: Prospective, transversal, observational and self-paired study evaluating 21 patients with hepatosplenic schistosomiasis submitted to Doppler ultrasonography performed by three independent observers for measurement of portal blood flow. Pairwise interobserver agreement was calculated by means of the intraclass correlation coefficient, paired t-test and Pearson's correlation coefficient. RESULTS: Interobserver agreement was excellent. Intraclass correlation ranged from 80.6% to 93.0% (IC at 95% [65.3% ; 95.8%]), with the Pearson's correlation coefficient ranging between 81.6% and 92.7% with no statistically significant interobserver difference regarding the mean portal blood flow volume measured by Doppler ultrasonography (p = 0.954 / 0.758 / 0.749). CONCLUSION: Doppler ultrasonography has demonstrated to be a reliable method for measuring the portal blood flow volume in patients with portal hypertension secondary to schistosomiasis, with a good interobserver agreement. OBJETIVO: Avaliar a reprodutibilidade do ultra-som Doppler na quantificação do volume de fluxo portal em pacientes esquistossomóticos. MATERIAIS E MÉTODOS: Estudo prospectivo, transversal, observacional e autopareado, avaliando 21 pacientes portadores de esquistossomose hepatoesplênica, submetidos a mensuração do fluxo portal pelo ultra-som Doppler por três observadores, de forma independente, sendo calculada a concordância entre estes, dois a dois, pelo coeficiente de correlação intraclasse, teste t-pareado e grau de linearidade de Pearson. RESULTADOS: A concordância interobservador foi excelente. O coeficiente de correlação intraclasse variou entre 80,6% e 93,0% (IC a 95% [65,3% ; 95,8%]), com coeficiente de correlação de Pearson variando entre 81,6% e 92,7% e sem diferença estatisticamente significante entre os observadores quanto à média do fluxo portal mensurado pelo ultra-som Doppler (p = 0,954 / 0,758 / 0,749). CONCLUSÃO: O ultra-som Doppler é um método confiável para quantificar o fluxo portal em pacientes portadores de hipertensão porta de origem esquistossomótica, apresentando boa concordância interobservador.
Citation
Radiologia Brasileira. Colégio Brasileiro de Radiologia e Diagnóstico por Imagem, v. 41, n. 5, p. 305-308, 2008.Keywords
Portal flowMeasurement
Doppler ultrasonography
Reproducibility
Portal hypertension
Fluxo portal
Mensuração
Ultra-sonografia Doppler
Reprodutibilidade
Hipertensão portal
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- EPM - Artigos [17709]
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