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OBJETIVO: Diagnóstico precoce de distúrbios miccionais pode diminuir as repercussões sociais e psicológicas e evitar lesões renais. O jato ureteral pode ser avaliado por estudo Doppler, método que apresenta boa associação com dados clínicos dos pacientes no que diz respeito ao diagnóstico de disfunção miccional. O objetivo deste estudo é avaliar a concordância interobservadores entre os tipos de jato ureteral. MATERIAIS E MÉTODOS: Estudo prospectivo de concordância interobservadores. Um total de 41 pacientes foi examinado sequencialmente por dois médicos ultrassonografistas. Para cada paciente, três curvas dopplerfluxométricas foram obtidas de jatos consecutivos de cada ureter. O número de picos em cada curva foi observado e classificado. A velocidade máxima do maior pico de cada onda foi observada. Coeficientes kappa (&#954;) foram calculados. RESULTADOS: A concordância interobservadores foi moderada (&#954; = 0,48; intervalo de confiança 95%: 0,36-0,60). O padrão platô foi o mais frequente. As velocidades máximas dos ureteres, medidas pelos dois observadores, foram de 32,37 cm/s e 35,63 cm/s, respectivamente. CONCLUSÃO: O exame das curvas dopplerfluxométricas do jato ureteral é método que demonstrou moderada concordância interobservadores. OBJECTIVE: Early diagnosis of voiding dysfunction can minimize social and psychological repercussions and avoid renal lesions. The ureteric jet can be evaluated by color Doppler, and a good correlation has been observed between this method and patients' clinical data in the diagnosis of voiding dysfunction. This study was aimed at evaluating the interobserver agreement in the assessment of the ureteral jet in asymptomatic children. MATERIALS AND METHODS: Interobserver agreement was prospectively evaluated. A total of 41 patients were sequentially evaluated by two medical sonographers. For each patient, three consecutive Doppler waveforms were obtained from each of the two ureteral jets. The number of peaks on each wave was observed and classified. The maximum velocity of the highest peak of each waveform was also observed. Kappa coefficients (&#954;) were calculated. RESULTS: Moderate interobserver agreement was observed (&#954; = 0.48; 95% confidence interval: 0.36-0.60). Most frequently a plateau pattern was observed for the ureteric jet. Maximum velocities measured by the two observers were respectively 32.37 cm/s and 35.63 cm/s. CONCLUSION: Moderate interobserver agreement was observed in the evaluation of the ureteric jet by means of color Doppler

Formato da onda do jato ureteral ao estudo Doppler espectral: comparação interobservadores. Estudo prospectivo em crianças assintomáticas