William B Abernethy

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Microvascular density was determined in the supraoptic nuclei (SON) and paraventricular nuclei (PVN) of fixed brain tissue from 19 human subjects ranging in age from 30 to 85 years. Eight of these patients had hypertension. No sex- or hypertension-related differences in microvascular density were found in either the SON or PVN. However, capillary density(More)
The authors aimed to delineate the risk factors and radiologic pattern of stroke complicating cardiac catheterization. Twenty-two cases were matched with three control subjects. Stroke was significantly associated with severity of coronary artery disease and length of fluoroscopy time (OR 1.96 and 1.65). The use of MRI with diffusion weighting allowed the(More)
OBJECTIVE To review, systematically, the physical diagnosis of hypovolemia in adults. METHODS We searched MEDLINE (January 1966-November 1997), personal files, and bibliographies of textbooks on physical diagnosis and identified 10 studies investigating postural vital signs or the capillary refill time of healthy volunteers, some of whom underwent(More)
OBJECTIVES We examined the echocardiographic characteristics of highly trained American football players. BACKGROUND Intense physical training is associated with morphologic and physiologic cardiac changes often referred to as the "athlete's heart." Echocardiographic features peculiar to elite football players have not been described. METHODS We studied(More)
In experimental animals, coadministration of calcium (Ca) salts with beta-adrenergic receptor agonists reduces the increased blood pressure and cyclic AMP (cAMP) produced by beta-adrenergic receptor agonists alone. In patients, coadministration of these drugs reduces the increased cardiac output and blood glucose produced by selective administration of(More)
The role of radiologic evaluation of esophageal motility in patients with chest pain has been studied rarely. Consequently, we compared the results of radiologic and manometric examinations of the esophagus in 170 patients (106 women, 64 men; mean age, 53 years) with chest pain. Manometry, used as the standard, was normal in 114 (67%) patients, and showed(More)