[OBSTRUCTION OF THE OUTFLOW TRACT OF THE LEFT VENTRICLE DURING CARDIAC SURGERY].

Obstruction of the outflow tract of the left ventricle is well understood as a complication of hypertrophic cardiomyopathy. But other clinical situations are not described in Russian. The aim of this work was the description of the clinical, echocardiographic criteria and pathogenetically substantiated therapy dynamic subaortic obstruction in operations with extracorporeal circulation.

Markedly reduced apparent blood volume on bolus contrast magnetic resonance imaging as a predictor of hemorrhage after thrombolytic therapy for acute ischemic stroke.

Background And Purpose: Accurate assessment of the risk of hemorrhage could help to improve patient selection for thrombolytic therapy and reduce hemorrhagic complications, especially for patients with longer or uncertain time after symptom onset. This study sought to define characteristics of hemodynamic magnetic resonance imaging (MRI), which best predict hemorrhage.

Methods: Bolus contrast and diffusion MRI were performed before intravenous tissue plasminogen activator (tPA) therapy in 20 patients presenting with acute stroke symptoms within the first 6 hours after symptom onset.