RESUMO
OBJECTIVES: To assess the usefulness of Doppler ultrasound in the evaluation of the vascular changes in the splanchnic circulation and bowel wall described in patients with active Crohn's disease (ACD). DESIGN: We analyzed prospectively with Doppler ultrasound the mean velocity of portal flow, the resistive index (RI) of the superior mesentery artery (SMA) and we looked for vessels within the bowel wall. PATIENTS: 50 patients with ACD and 30 normal individuals. RESULTS: In comparison with normal individuals, patients with ACD showed a statistically significant difference (p < 0.001) in the mean velocity of the portal flow and in the RI of the SMA. In all patients with ACD, vessels could be seen within the bowel wall using the color Doppler ultrasound. CONCLUSION: Doppler ultrasound can be used as a non-invasive method to evaluate the vascular changes which develop in the splanchnic circulation and bowel wall of patients with ACD.
Assuntos
Colo/diagnóstico por imagem , Doença de Crohn/diagnóstico por imagem , Íleo/diagnóstico por imagem , Adulto , Velocidade do Fluxo Sanguíneo , Colo/irrigação sanguínea , Doença de Crohn/fisiopatologia , Feminino , Humanos , Íleo/irrigação sanguínea , Masculino , Estudos Prospectivos , Circulação Esplâncnica , Ultrassonografia Doppler em CoresAssuntos
Fígado/irrigação sanguínea , Telangiectasia Hemorrágica Hereditária/complicações , Ultrassonografia Doppler em Cores , Adulto , Angiografia , Feminino , Artéria Hepática/diagnóstico por imagem , Humanos , Fígado/diagnóstico por imagem , Telangiectasia Hemorrágica Hereditária/diagnóstico por imagemRESUMO
OBJECTIVE: To evaluate the changes in the Doppler waveform of the hepatic veins in patients with cirrhosis. DESIGN: We analyzed prospectively with Doppler ultrasound the flow of the hepatic veins and we compared the different Doppler waveform patterns with the degree of liver failure according to the Child-Pugh score. PATIENTS: Forty three patients with cirrhosis and 60 normal individuals with similar age and sex. RESULTS: Abnormal hepatic vein waveforms were found in 40 of 43 patients with cirrhosis and in none of the 50 controls subjects. No statistically significant differences were detected between the different Doppler waveform patterns and the Child-Pugh score (p = 0.063). CONCLUSIONS: Our findings indicate that an alteration of the Doppler waveform pattern of hepatic veins suggest the presence of cirrhosis and that there is no association between the degree of the liver failure and the waveform patterns.