James O. Warren

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Three dimensional reconstruction images of bony and soft tissue surfaces have improved understanding of complex facial deformities. Applied to CT studies of complex craniofacial abnormalities, this method has delineated abnormal facial soft tissue and bony morphology, facilitated surgical planning, and improved quantitative postoperative evaluation.(More)
The understanding of complex craniofacial deformities has been aided by high resolution computed tomography. Nonetheless, the planar format limits spatial comprehension. Reconstruction of fully three-dimensional bony and soft tissue surfaces from high resolution CT scans has been accomplished by a level slicing edge detector coupled to a hidden surface(More)
Recent developments in computer-aided medical imaging coupled with the related emergence of computer-aided design and manufacturing technology have had a significant effect on our management of patients with congenital and acquired head and neck deformities. In our institution, plain film skull radiography, cephalometry, and pluridirectional tomography have(More)
In pregnant patients with myasthenia gravis and respiratory compromise, neuraxial anesthesia for lower abdominal surgery can risk further respiratory depression. We report the use of epidural anesthesia for dilation and curettage and tubal ligation in a 26-yr-old woman with a 12-wk intrauterine pregnancy with severe myasthenia gravis and respiratory(More)
A patient with sleep apnea syndrome, concurrently taking clonidine as an antihypertensive, presented with severe respiratory acidosis, hypotension, and associated central nervous system depression. Acidosis was improved by mechanical ventilation, and central nervous system (CNS) depression and hypotension were reversed with yohimbine. Clonidine may have an(More)
The cardiac output has been measured during the immediate post-Valsalva maneuver recovery period in normal subjects, patients with clinically significant mitral stenosis, and patients with alterations of the autonomic nervous system. When compared with the resting value, it was found that normal subjects had a decrease in cardiac output during the immediate(More)