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991.
In recent years, we have begun to understand the progressive nature of benign prostatic hyperplasia. By careful analysis of
population studies and clinical trials, we can determine the factors most likely to predict progression to one of its most
distressing complications, acute urinary retention. Acute urinary retention is a common urologic emergency and causes significant
suffering, although rarely has it any serious consequences. Using our knowledge regarding the progression of benign prostatic
hyperplasia, new treatment modalities are being assessed for their effectiveness at halting progression and ultimately preventing
this distressing condition. 相似文献
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J. J. Twomey MB A. H. Laughter MSc P. H. Jordan Jr MD 《Digestive diseases and sciences》1971,16(12):1075-1081
There is a significant correlation between intrinsic factor (IF) and HCI content in 2-hour gastric aspirates after maximal stimulation with betazole. This correlation is due only in part to the fact that IF and HCI values from each subject are derived from the same volumes of gastric juice. There is an exception to this correlation among acid hypersecretors; their IF output is elevated to a lesser order of magnitude. Mean IF secretion by groups of elderly subjects is less than mean IF secretion by groups of younger subjects. However, an analysis of individual results shows that some elderly males can secrete as much IF as younger men. This suggests that reduced IF secretion is not an inevitable consequence of senescence. Preliminary evidence is presented which suggests that vagotomy may reduce betazole-stimulated IF secretion in most patients by a comparable amount as it reduces HCI secretion; IF secretion is not reduced in a minority of patients. 相似文献
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John E. Morch MD CM FRCP Stuart W. Klein MD FRCP Peter Richardson MD FRCP Gordon Froggatt MB Leonard Schwartz MD FRCP Michael McLoughlin MB MRCP 《The American journal of cardiology》1972,29(6):812-816
Mitral regurgitant flow levels and fractions were measured in 91 patients using a constant infusion of 133xenon solution as an indicator. Regurgitant flow measurements ranged from 0.01 to 11.8 liters/min. Uniformity of left atrial mixing and negligible recirculation was achieved. The 133xenon method was compared with other methods of measuring mitral regurgitation. This convenient technique was of great assistance in reaching conclusions about patients with mixed mitral stenosis and regurgitation, multiple valve replacement or mitral regurgitation associated with myocardial disease. We conclude that, because of the few sources of error and its clinical reliability, the 133xenon method is one of the most accurate available. 相似文献
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