Hepatic artery resistance in alcoholic liver disease

Ultrasound approach to the Wilson’s disease

“…The usual range in normal individuals is between 0.55 and 0.65. Compared with controls, the patients with WD, and alcoholicpatients without liver disease, the chronic alcoholic patientswith cirrhosis had an elevated hepatic arterial RI, as didpatients with cirrhosis of viral etiology indicatingthat the progression of liver damage from WD to cirrhosisimpairs the arterial responsiveness because offibrosis [13].…”

Splanchnic Arterial Doppler Parameters in Portal Hypertension

“…2 Consequently, a difference in hepatic artery RI between normal and diseased livers was only found when measured inside the liver, either when increased 2-4 or decreased, as also recently shown in this journal. 4 Furthermore, in the work by Taourel et al, the hepatic artery RI was not corrected according to the heart rate, as proposed by Mostbeck et al for parenchymal arteries, 5 so that it is not possible to exclude that differences in heart rates among patients could have hindered a final positive resultThe superior mesenteric artery RI was used by Taourel et al to correlate the degree of splanchnic vasodilatation, a landmark of cirrhotic hyperkinetic circulation, with portal pressure, but no statistically significant relationship was found. 1 Some recent data show that the pulsatility index is more sensitive than the RI in detecting early impedance changes in the superior mesenteric artery.…”

“…2 Consequently, a difference in hepatic artery RI between normal and diseased livers was only found when measured inside the liver, either when increased 2-4 or decreased, as also recently shown in this journal. 4 Furthermore, in the work by Taourel et al, the hepatic artery RI was not corrected according to the heart rate, as proposed by Mostbeck et al for parenchymal arteries, 5 so that it is not possible to exclude that differences in heart rates among patients could have hindered a final positive result…”

Avaliação ultrassonográfica e dopplervelocimétrica da esquistossomose mansônica: estudo de campo em áreas de baixa, média e alta endemicidades

“…O padrão das curvas espectrais das veias supra-hepáticas em cirróticos também foi investigado por Bolondi et al (1991 O comportamento da artéria hepática na hipertensão portal também foi objeto de estudo de vários autores, todos com resultados bastante semelhantes (Sacerdoti et al, 1995;Piscaglia et al, 1997;Colli et al, 1998e Schneider et al, 1999: o aumento do índice de resistividade da artéria concomitante ao aumento da pressão portal. Erden et al (1999), avaliando o índice de resistividade da artéria hepática de pacientes com hipertensão portal em sítios diferentes (pré-sinusoidal e sinusoidal) e de indivíduos sadios, destacaram que a resistência arterial hepática não se altera nos pacientes com quadro hipertensivo pré-sinusoidal, enquanto nos pacientes com hipertensão sinusoidal essa resistência encontra-se significativamente aumentada.…”

“…Os estudos do comportamento da artéria hepática na hipertensão portal cirrótica indicam que paralelamente ao aumento da pressão portal ocorre aumento do índice de resistividade da artéria (Sacerdoti et al, 1995;Piscaglia et al, 1997;Colli et al, 1998;Schneider et al, 1999). No entanto, Erden et al (1999) Bogliolo (1956b), Coutinho et al (1964) e Speranzini (1971, apud Cerri, 1984a, estava dentro dos limites normais em todos os parâmetros avaliados e acompanhou passivamente a hemodinâmica do processo patogênico esquistossomótico.…”