Published in:
01-07-2020 | Ascites | ABDOMINAL RADIOLOGY
Radiation exposure during transjugular intrahepatic portosystemic shunt creation in patients with complete portal vein thrombosis or portal cavernoma
Authors:
Roberto Miraglia, Luigi Maruzzelli, Christine Cannataci, Roberta Gerasia, Giuseppe Mamone, Kelvin Cortis, Biagio Cimò, Ioannis Petridis, Riccardo Volpes, Angelo Luca
Published in:
La radiologia medica
|
Issue 7/2020
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Abstract
Background
This study aims to evaluate radiation exposure in patients with complete portal vein thrombosis (CPVT) or portal cavernoma (PC) undergoing transjugular intrahepatic portosystemic shunt (TIPS) creation using real-time ultrasound guidance for portal vein targeting.
Materials and methods
This is a single institution retrospective analysis. Between August 2009 and September 2018, TIPS was attempted in 49 patients with CPVT or PC. Radiation exposure (dose area product [DAP], air KERMA (AK) and fluoroscopy time [FT]), technical success, clinical success, complications and survival were analyzed.
Results
In total, 29 patients had CPVT and 20 patients had PC. 41/49 patients had cirrhosis. TIPS indications were refractory ascites (n = 25), variceal bleeding (n = 16) and other (n = 8). TIPS was successfully placed in 94% (46/49) of patients via a transjugular approach alone (n = 40), a transjugular/transhepatic approach (n = 5) and a transjugular/transsplenic approach (n = 1). Median DAP was 261 Gy * cm2 (range 29–950), median AK was 0.2 Gy (range 0.05–0.5), and median FT was 28.2 min (range 7.7–93.7). Mean portosystemic pressure gradient decreased from 16.8 ± 5.1 mmHg to 7.5 ± 3.3 mmHg (P < 0.01). There were no major procedural complications. Overall clinical success was achieved in 77% of patients (mean follow-up of 21.1 months). Encephalopathy was observed in 16 patients (34%), grade II–III encephalopathy in 7 patients (15%). TIPS revision was performed in 15 patients (32%). Overall survival rate was 75%.
Conclusion
In our experience, the use of real-time ultrasound guidance allowed the majority of the TIPS to be performed via a transjugular approach alone with a reasonably low radiation exposure considering the high technical difficulties of the selected cohort of patients with CVPT or PC.