Abstract
Background
Large scale data on preoperative risk stratification for gastrointestinal bleeding (GIB) following continuous-flow left ventricular assist device (CF-LVAD) implantation are scarce.
Aims
To identify independent predictors for GIB following CF-LVAD implantation.
Methods
We conducted a retrospective cohort study of consecutive 243 patients who underwent CF-LVAD implantation (HeartMateII) from January 2009 to March 2015 at the University of Chicago Medical Center. GIB was defined as the presence of overt bleeding or occult GIB with ≥ 2 g/dl drop in hemoglobin (Hgb) from recorded baseline values and hemoccult-positive stool. The preoperative and postoperative data were reviewed.
Results
Within a median follow-up duration of 408 (IQR 113–954) days, 83 (34%) patients developed GIB after a median of 149 (IQR 27–615) days after implantation of CF-LVAD. There were no significant differences between the groups of GIB and non-GIB with respect to preoperative demographics and comorbidity except for ethnicity. The source of bleeding was identified in 39 (47%) patients and arteriovenous malformation or submucosal streaming vessel was the most frequent cause of bleeding (18/39, 46%). Multivariate-adjusted analysis demonstrated preoperative central venous pressure (CVP) ≥ 18 mmHg (HR 3.56; 95% CI 1.16–10.9; p = 0.026), mean pulmonary artery pressure (mPA) ≥ 36 mmHg (HR 4.14; 95% CI 1.35–12.7; p = 0.013), and the presence of moderate/severe tricuspid valve disease (HR 1.01; 95% CI 1.01–3.86; p = 0.046) were associated with the risk of GIB.
Conclusions
In this study, preoperative right-sided cardiac congestion (i.e., increased CVP, mPA and the presence of moderate/severe tricuspid valve disease) was associated with GIB in patients with CF-LVAD.
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Tomizawa, Y., Tanaka, A., Kitahara, H. et al. Preoperative Right-Sided Cardiac Congestion Is Associated with Gastrointestinal Bleeding in Patients with Continuous-Flow Left Ventricular Assist Devices. Dig Dis Sci 63, 1518–1524 (2018). https://doi.org/10.1007/s10620-018-4916-8
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DOI: https://doi.org/10.1007/s10620-018-4916-8