Ahmad Parvinian, James T. Bui, M. Grace Knuttinen, Jeet Minocha, Ron C. Gaba
Purpose. To elucidate the impact of right atrial (RA) pressure on early mortality after transjugular intrahepatic portosystemic shunt (TIPS). Material and methods. In this single institution retrospective study, 125 patients (M:F = 75:50, mean age 55 years) who underwent TIPS with recorded intra-procedural RA pressures between 1999-2012 were studied. Demographic (age, gender), liver disease (Child-Pugh, Model for End Stage Liver Disease or MELD score), and procedure (indication, urgency, Stent type, portosystemic gradient or PSG reduction, baseline and post-TIPS RA pressure) data were identified, and the influence of these parameters on 30- and 90-day mortality was assessed using binary logistic regression. Results. TIPS were created for variceal hemorrhage (n = 55) and ascites (n = 70). Hemodynamic success rate was 99% (124/125) and mean PSG reduction was 13 mmHg. 30- and 90-day mortality rates were 18% (19/106) and 28% (29/106). Baseline and final RA pressure were significantly associated with 30- (12 vs. 15 mmHg, P = 0.021; 18 vs. 21 mmHg, P = 0.035) and 90-day (12 vs. 14 mmHg, P = 0.022; 18 vs. 20 mmHg, P = 0.024) survival on univariate analysis. Predictive usefulness of RA pressure was not confirmed in multivariate analyses. Area under receiver operator characteristic (AUROC) curve analysis revealed good pre- and post-TIPS RA pressure predictive capacity for 30- (0.779, 0.810) and 90-day (0.813, 0.788) mortality among variceal hemorrhage patients at 14.5 and 21.5 mm Hg thresholds. Conclusion. Intra-procedural RA pressure may have predictive value for early post-TIPS mortality. Pre-procedure consideration and optimization of patient cardiac status may enhance candidate selection, risk stratification, and clinical outcomes, particularly in variceal hemorrhage patients.
Key words. Right atrium., Liver., TIPS., Outcome.