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  • Title: Portal vein velocities measured by ultrasound: usefulness for evaluating shunt functioning following TIPS placement and TIPS revision.
    Author: Fung Y, Glajchen N, Shapiro RS, Wolf DC, Cooper JM.
    Journal: Abdom Imaging; 1998; 23(5):511-4. PubMed ID: 9841065.
    Abstract:
    BACKGROUND: To assess the usefulness of following portal vein velocities by Doppler ultrasound in evaluating shunt functioning after transhepatic intrajugular portosystemic shunt (TIPS) placement and revision. METHODS: We retrospectively analyzed 39 patients who underwent a TIPS procedure in the preceding 4 years. Portal vein (PV) velocities were measured by Doppler ultrasound before and after TIPS insertion and revision and were correlated with portosystemic gradients (PSG) measured at angiography. RESULTS: Mean PV velocities increased from 18 +/- 6 cm/s before TIPS placement to 50 +/- 21 cm/s (p < 0.001) after TIPS placement, with corresponding decrease of mean PSG from 20 +/- 6 to 8 +/- 3 mmHg (p < 0.001). Mean PV velocities significantly increased from 24 +/- 6 to 43 +/- 14 cm/s after TIPS revision (p < 0.02), with decrease of PSG from 17 +/- 6 to 9 +/- 5 mmHg (p < 0.05). A significant correlation was found between all PV velocities and their corresponding PSG (Spearman r < 0.61, p < 0.001). CONCLUSION: PV velocities significantly correlate with changes in PSG. Following portal vein velocities by ultrasound is useful for early evaluation of shunt functioning following TIPS.
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