Prognostic value of estimated glomerular filtration rate and presence of proteinuria in type B aortic intramural hematoma

BACKGROUND: Although aggressive medical treatment is recommended in patients with type B aortic intramural hematoma (IMH), a variety of aortic events can occur during the later period. For early identification of these patients, the present study was aimed at evaluating the prognostic validity of estimated glomerular filtration rate (eGFR) and the presence of proteinuria in type B aortic IMH. METHODS: Data of 61 patients with type B IMH in Peking University People’s Hospital from January 2008 to December 2018 were retrospectively collected. The serum creatinine level and urine protein levels were measured at admission. And eGFR were calculated by the CKD-EPI equation. Adverse aortic-related events were defined as a composite of satisfaction of criteria for surgical conversion (with or without actual surgical intervention) and death from aortic rupture. RESULTS: Initial eGFR was significantly different between patients with adverse aortic-related events and those without (P=0.003). On multivariate analysis, eGFR <90 mL/min/1.73 m(2) (OR, 8.726; 95% CI: 1.711–46.144; P=0.009) and ULP (OR, 17.516; 95% CI: 3.322–92.258; P=0.001) were independent predictors of adverse aorta-related events. Furthermore, eGFR <90 mL/min/1.73 m(2) and proteinuria (+) (OR, 8.344; P=0.030) had significantly greater rates of aortic-related events. In addition, eGFR <90 mL/min/1.73 m(2) and proteinuria (+) had incremental prognostic value (C-statistic, 0.860, P=0.039) compared with ulcer-like projection (C-statistic, 0.815) alone. CONCLUSIONS: Initial eGFR and presence of proteinuria were able to provide incremental prognostic information in addition to ulcer-like projection in patients with type B aortic IMH.