Regulation of Angiopoietin-2 Before and After Mechanical Circulatory Support Therapy.
2020
Gastrointestinal bleeding (GIB) during mechanical circulatory support (MCS) is a major unsolved comorbidity. Inadequate activation of angiopoietin-2-related systems is considered as a major cause of GIB. However, the regulation of angiopoietin-2 remains unknown. Consecutive 20 patients who received continuous-flow MCS therapy (MCS group) and 12 with advanced heart failure (HF; HF group) were prospectively enrolled and their angiopoetin-2 levels were compared. Angiopoietin-2 level had a moderate correlation with log10 B-type natriuretic peptide (BNP; r = 0.39, p 4.3) was significantly associated with the occurrence of GIB with a hazard ratio of 296 (95% confidence interval 2.24-38620, p = 0.0224). Angiopoietin-2 was already elevated in the HF cohort and more elevated following MCS initiation. Among the MCS cohort, angiopoietin-2 was particularly elevated in patients with systemic congestion and inflammation and was associated with higher incidence of GIB.
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