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BACKGROUND Little is known about the regional distribution of cerebral blood flow (CBF) in nonanesthetized animals during periods of lowered blood pressure. The present investigation addresses the specific reaction patterns of local cerebral blood flow (LCBF) in comparison with mean CBF during graded pressure-controlled hemorrhagic shock in conscious rats.(More)
BACKGROUND Bronchoscopy is frequently used to assess invasion of esophageal cancer into the tracheobronchial tree. Prospective studies evaluating the role of bronchoscopy in pretherapeutic staging of esophageal cancer are lacking. STUDY OBJECTIVES To evaluate the diagnostic utility of fiberoptic bronchoscopy for the assessment of airway involvement by(More)
BACKGROUND Chronic thromboembolic pulmonary hypertension (CTEPH), subsequent to pulmonary embolism is a relatively frequent cause of pulmonary hypertension. Similar to patients with pulmonary arterial hypertension (PAH), CTEPH carries a poor prognosis. There is no hard evidence for any other therapy except pulmonary endarterectomy and none for those(More)
BACKGROUND The nephrotoxicity induced by contrast media remains a serious clinical problem, and the underlying mechanism has not been completely understood. Experimental and clinical investigations suggest that reactive oxygen species (ROS) are critical determinants of radiocontrast nephropathy (RCN), and that antioxidants can prevent this damage. METHODS(More)
— The free and open source Tele-Operation Platform of the MPI for Biological Cybernetics (TeleKyb) is an end-to-end software framework for the development of bilateral teleoperation systems between human interfaces (e.g., haptic force feedback devices or gamepads) and groups of quadrotor Unmanned Aerial Vehicles (UAVs). Among drivers for devices and robots(More)
BACKGROUND Factors possibly predicting airway invasion of oesophageal cancer in the absence of frank oesophagotracheal fistulas have not been studied. OBJECTIVES To identify possible predictors of airway invasion by oesophageal cancer that are readily accessible in the preoperative setting. METHODS We prospectively investigated 148 patients with newly(More)