PURPOSE: to assess the signs of TIPS dysfunction at Doppler sonography. MATERIALS AND METHODS: retrospective study of signs observed in 106 TIPS including 31 TIPS with dysfunction (portoauricular pressure gradient > 12 mmHg). RESULTS: the signs of TIPS dysfunction were a decrease in the mean velocity in the TIPS (for a velocity < 40 cm/sec, 90% sensitivity, 96%), a hepatopetal intrahepatic portal flow (on the right 90% sensitivity, 100% specificity, on the left 95% sensitivity, 92% specificity), a lack of cardiac modulation of the signal in the TIPS (93% sensitivity, 65% specificity), a hepatic vein flow reversal (30% sensitivity, 100% specificity), and, the only direct sign of stenosis, an increase of the mean velocity in the stenosis (42% sensitivity, 95% specificity for a velocity > or = 1 m/sec). CONCLUSION: the most sensitive Doppler signs of tips dysfunction are the indirect signs of stenosis.
PURPOSE: to assess the signs of TIPS dysfunction at Doppler sonography. MATERIALS AND METHODS: retrospective study of signs observed in 106 TIPS including 31 TIPS with dysfunction (portoauricular pressure gradient > 12 mmHg). RESULTS: the signs of TIPS dysfunction were a decrease in the mean velocity in the TIPS (for a velocity < 40 cm/sec, 90% sensitivity, 96%), a hepatopetal intrahepatic portal flow (on the right 90% sensitivity, 100% specificity, on the left 95% sensitivity, 92% specificity), a lack of cardiac modulation of the signal in the TIPS (93% sensitivity, 65% specificity), a hepatic vein flow reversal (30% sensitivity, 100% specificity), and, the only direct sign of stenosis, an increase of the mean velocity in the stenosis (42% sensitivity, 95% specificity for a velocity > or = 1 m/sec). CONCLUSION: the most sensitive Doppler signs of tips dysfunction are the indirect signs of stenosis.
Authors: Charlotte Nicolas; Amélie Le Gouge; Louis d'Alteroche; Jean Ayoub; Monica Georgescu; Vincent Vidal; Denis Castaing; Jean-Pierre Cercueil; Patrick Chevallier; Jérôme Roumy; Hervé Trillaud; Louis Boyer; Vincent Le Pennec; Christophe Perret; Bruno Giraudeau; Jean-Marc Perarnau Journal: World J Hepatol Date: 2017-09-28