Acute ischemic stroke in a patient with Cogan's syndrome.

Cogan's syndrome is a rare disorder characterized by inflammatory eye and inner ear/vestibular disease. In some cases patients may present medium and large vessel vasculitis which may produce neurological manifestations. We present the case of a patient who was admitted with clinical manifestations of stroke. After intense study, Cogan's syndrome was diagnosed and treated.

Alactic base excess is an independent predictor of death in sepsis: A propensity score analysis.

PURPOSE: Alactic base excess (ABE) is a novel biomarker defined as the sum of lactate and standard base excess and estimates the renal capability of handling acid-base disturbances in sepsis. The objective of this study is to see if ABE is an independent predictor of mortality in septic patients with and without renal dysfunction. MATERIALS AND METHODS: We retrospectively studied 1178 patients with sepsis and septic shock. Patients were divided according to ABE values: 1) negative ABE (<-3 mmol/L); 2) neutral ABE (≥ - 3 and < 4 mmol/L); and 3) positive ABE (≥4 mmol/L). The effect of ABE on mortality was evaluated using Cox regression weight by inverse probability weighting (IPWT) analysis after propensity score assessment. Additionally, we performed a stratified analysis in patients with GFR > 60 mL/min/1.73 m2. RESULTS: Negative ABE patients had higher mortality than patients with neutral ABE (adjusted HR 1.43; 95%CI 1.02-2.01). Also, in patients with GFR > 60 mL/min/1.73 m2 (n = 493), we observed higher mortality in patients with negative ABE (adjusted HR 2.43; 95%CI 1.07-5.53). CONCLUSIONS: Negative ABE is an independent predictor of in-hospital mortality in septic patients with and without renal dysfunction.