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991.
James Reed III Joseph F. Lucke Kathleen A. Moser Linda A. Faust Pamela Robson 《Journal of medical systems》1993,17(1):17-24
Lehigh Valley Hospital initiated a program of total quality management using the model taught by Philip Crosby Associates. When the training began in the Research Department, we used the application of this model to identify, define and chart the various processes that a research project or study moves through from conception to publication. The resulting charts and process outlines enabled the Research Department personnel to recognize problem areas in the processes, and to chart the progress of a study at any given time. This provided us with both a better understanding of input and output in the research processes, and an opportunity to improve efficiency by correcting problem areas. 相似文献
992.
993.
994.
DM Surgenor ; EL Wallace ; WH Churchill ; S Hao ; WB Hale ; J Schnitzer 《Transfusion》1989,29(9):761-767
Red cell transfusions in all patients within specific medical or surgical diagnosis-related groups (DRGs) and International Classification of Diseases (ICD-9-CM) classes were analyzed by a unique body of data that combined abstracted patient discharge records with the numbers of red cell units transfused. Informative measures of transfusion practice within an ICD-9-CM class were the proportion of patients transfused, the mean units transfused per patient, and the ratio of standard deviation to the mean of units transfused. Transfusion frequency plots (percentage of patients against units of red cells transfused per patient) revealed the existence of a modal transfusion frequency, as well as an asymmetric tail on the high frequency side. These and other features make it possible to characterize transfusion practice in specific ICD-9-CM classes. The mean units of red cells transfused for all patients in a DRG is a measure of blood resource utilization and should be useful in planning to meet future needs. 相似文献
995.
996.
Detection of renal masses: sensitivities and specificities of excretory urography/linear tomography, US, and CT 总被引:4,自引:0,他引:4
Warshauer DM; McCarthy SM; Street L; Bookbinder MJ; Glickman MG; Richter J; Hammers L; Taylor C; Rosenfield AT 《Radiology》1988,169(2):363-365
A prospective blinded study of 201 patients was performed to determine the relative sensitivities and specificities of excretory urography/linear tomography (EU/LT) and ultrasound (US) for the diagnosis of renal parenchymal masses. Computed tomography (CT) was used as a standard. EU/LT permitted detection of 10% of CT-confirmed masses (cystic or solid) less than 1 cm, 21% of lesions greater than or equal to 1 cm but less than 2 cm, 52% of lesions greater than or equal to 2 cm but less than 3 cm, and 85% of lesions 3 cm or more in diameter. US permitted detection of 26% of CT-confirmed lesions less than 1 cm, 60% of lesions greater than or equal to 1 cm but less than 2 cm, 82% of lesions greater than or equal to 2 cm but less than 3 cm, and 85% of lesions 3 cm or more in size. The results confirm the relative insensitivity of EU/LT for masses less than 3 cm in diameter and of US for masses less than 2 cm. Further, they suggest that CT may have a role not only in evaluation of cases in which the urographic or sonographic results are questionable or positive, but also in confirmation of apparently negative urographic findings when clinical suspicion of a lesion is high. 相似文献
997.
998.
在HCI-KCI(pH1~2)介质中,用循环伏安和示差脉冲极谱(DPP)等电化学方法研究了拉氧头孢钠(噻吗灵)的电极反应机理,并建立了用DPP测定的新方法。其峰电位为-0.62V(vsAg/AgCl),峰电流与拉氧头孢钠浓度在1×10-8~5×10-6mol·L-1(富集时间tac=90s),5×10-6~5×10-5mol·L-1(tac=70s),5×10-5~8×10-4mol·L-1(tac=30s)范围内成线性关系。检测限为4×10-9mol·L-1(tac=90s)。本法可用于注射剂中该物质的测定,同时也探讨了直接测定尿中拉氧头孢钠的可能性。 相似文献
999.
1000.