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In an effort to restore visual perception in retinal diseases such as age-related macular degeneration or retinitis pigmentosa, a design was recently presented for a high-resolution optoelectronic retinal prosthesis having thousands of electrodes. This system requires real-time image processing fast enough to convert a video stream of images into electrical(More)
It has been already demonstrated that electrical stimulation of retina can produce visual percepts in blind patients suffering from macular degeneration and retinitis pigmentosa. Current retinal implants provide very low resolution (just a few electrodes), while several thousand pixels are required for functional restoration of sight. We present a design of(More)
BACKGROUND Coronary revascularization on the beating heart is an attractive alternative to conventional coronary artery bypass grafts (CCABG), but remains controversial. Our study compares the outcomes of consecutive patients undergoing off-pump CABG (OPCABG) with a group of similar patients undergoing consecutive CCABG. METHODS A retrospective analysis(More)
The role of reactive oxygen metabolites in extrapancreatic organ dysfunction associated with acute hemorrhagic pancreatitis was studied in dogs. Experimental pancreatitis was induced by the intraductal infusion of activated trypsin and taurocholate. Cardiac output, pulmonary and systemic blood pressure, pulmonary wedge pressure, central venous pressure,(More)
In a patient with acute hemorrhagic pancreatitis complicated by pancreatic abscess, closure of the abdominal wall 7 days following marsupialization was difficult owing to the marked distension and edema of the bowel wall, especially the transverse colon. A simple technique using retention sutures with internal and external rubber "booties" above and below(More)
Previous reports suggest that in response to increasing FIO2, peripheral resistance increases, cardiac output falls, and regional blood flow decreases. This study examined the influence of varying FIO2 on pulmonary and systemic vascular resistances (PVR, SVR), cardiac output, ventricular work, and regional blood flows in ten anesthetized Yorkshire white(More)
Massive coagulopathy and bleeding continues to play a major role in the operative mortality and perioperative multi-system failure of patients requiring elective thoracoabdominal aneurysm repair. It was the purpose of this study to determine the coagulation defect that occurs with supraceliac aortic clamping and the effects of increasing aortic cross-clamp(More)
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