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John M Rivas Alejro Perez Marlow Hernez Alison Schneider Ferno J Castro 《World journal of gastroenterology : WJG》2014,20(30):10620-10627
AIM:To compare the bowel cleansing efficacy of same day ingestion of 4-L sulfa-free polyethylene glycol(4-L SF-PEG)vs 2-L polyethylene glycol solution with ascorbic acid(2-L PEG+Asc)in patients undergoing afternoon colonoscopy.METHODS:206 patients(mean age 56.7 years,61%male)undergoing outpatient screening or surveillance colonoscopies were prospectively randomized to receive either 4-L SF-PEG(n=104)or 2-L PEG+Asc solution(n=102).Colonoscopies were performed by two blinded endoscopists.Bowel preparation was graded using the Ottawa scale.Each participant completed a satisfaction and side effect survey.RESULTS:There was no difference in patient demographics amongst groups.4-L SF-PEG resulted in better Ottawa scores compared to 2-L PEG+Asc,4.2 vs4.9(P=0.0186);left colon:1.33 vs 1.57 respectively(P=0.0224),right colon:1.38 vs 1.63 respectively(P=0.0097).No difference in Ottawa scores was found for the mid colon or amount of fluid.Patient satisfaction was similar for both arms but those assigned to 4-L SF-PEG reported less bloating:23.1%vs 11.5%(P=0.0235).Overall polyp detection,adenomatous polyp and advanced adenoma detection rates were similar between the two groups.CONCLUSION:Morning only 4-L SF-PEG provided superior cleansing with less bloating as compared to 2-L PEG+Asc bowel preparation for afternoon colonoscopy.Thus,future studies evaluating efficacy of morning only preparation for afternoon colonoscopy should use4-L SF-PEG as the standard comparator. 相似文献
43.
Sequential viewing of abdominal CT images at varying rates 总被引:2,自引:0,他引:2
Gur D; Good WF; Oliver JH; Thaete FL; Baron RL; Federle MP; Campbell WL; Rosenthal MS 《Radiology》1994,191(1):119
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KS Tai J Brockwell FL Chan ED Janus KSL Lam 《Journal of Medical Imaging and Radiation Oncology》1995,39(1):61-65
Cerebrotendinous xanthomatosis is a rare familial sterol storage disease with accumulation of cholestanol and cholesterol particularly in xanthomas, bile and brain. Magnetic resonance imaging is a useful modality for imaging the affected tissues. It contributes to the evaluation and management of the disease. 相似文献
47.
5-单硝酸异山梨酯血药浓度测定及其在人的药代动力学 总被引:4,自引:0,他引:4
采用气相色谱-电子捕获检测法测定 5-单硝酸异山梨酯的血药浓度。样品经乙醚—正己烷混合溶剂提取,三氟醋酐进行衍生化后,用5% SE-30硅烷化玻璃填充柱分离,以硝酸异山梨酯为内标,63Ni电子捕获检测器检测。此法操作简便,日内、日间误差分别小于4%和6.5%,平均回收率为99.62%±1.19%。在20~800ng·mL-1血浆浓度范围内呈线性关系(γ=0.9995)。最低检测浓度为2.0ng·mL-1。应用此法研究了10名健康志愿者单次口服20mg 5-单硝酸异山梨酯片后的药代动力学。 相似文献
48.
Convergence of neural systems processing stimulus associations and coordinating motor responses 总被引:1,自引:1,他引:0
McIntosh AR; Lobaugh NJ; Cabeza R; Bookstein FL; Houle S 《Cerebral cortex (New York, N.Y. : 1991)》1998,8(7):648-659
A sensory-sensory learning paradigm was used to measure neural changes in
humans during acquisition of an association between an auditory and visual
stimulus. Three multivariate partial least-squares (PLS) analyses of
positron emission tomography data identified distributed neural systems
related to (i) processing the significance of the auditory stimulus, (ii)
mediating the acquisition of the behavioral response, and (iii) the spatial
overlap between these two systems. The system that processed the
significance of the tone engaged primarily right hemisphere regions and
included dorsolateral prefrontal cortex, putamen, and inferior parietal and
temporal cortices. Activity changes in left occipital cortex were also
identified, most likely reflecting the learned expectancy of the upcoming
visual event. The system related to behavior was similar to that which
coded the significance of the tone, including dorsal occipital cortex. The
PLS analysis of the concordance between these two systems showed
substantial regional overlap, and included occipital, dorsolateral
prefrontal, and limbic cortices. However, activity in dorsomedial
prefrontal cortex was strictly related to processing the auditory stimulus
and not to behavior. Taken together, the PLS analyses identified a system
that contained a sensory-motor component (comprised of occipital, temporal
association and sensorimotor cortices) and a medial prefrontallimbic
component, that as a group simultaneously embodied the learning-related
response to the stimuli and the subsequent change in behavior.
相似文献
49.
A temporal high-pass filtration technique for digital subtraction angiocardiography was studied, using real-time digital studies performed simultaneously with routine cineangiocardiography (cine) for qualitative image comparison. The digital studies showed increased contrast and suppression of background anatomy and also enhanced detection of wall motion abnormalities when compared with cine. This digital technique is compatible with panning the image intensifier during an injection. The digital images are comparable with, and in some cases better than, cine images. Clinical efficacy of this digital technique is currently being evaluated. Real-time display, as well as potential reductions in radiation and contrast material doses, may make digital angiocardiography an attractive technique. 相似文献
50.
Fefer A; Cheever MA; Thomas ED; Appelbaum FR; Buckner CD; Clift RA; Glucksberg H; Greenberg PD; Johnson FL; Kaplan HG; Sanders JE; Storb R; Weiden PL 《Blood》1981,57(3):421-430
Thirty-four patients aged 4-67 yr (median 17) with acute lymphocytic leukemia (ALL) (18 patients) or acute nonlymphocytic leukemia (ANL) (16 patients) who failed to enter complete remission (CR) or relapsed on conventional chemotherapy were treated with cyclophosphamide (CY), 60 mg/kg/day for 2 days, 1000 rad total body irradiation, and a marrow transplant from a genotypically identical normal twin. Sixteen of the patients received additional chemotherapy within the week before CY. After the transplant, 23 patients received immunotherapy consisting of killed autologous leukemic cells and/or normal twin peripheral blood lymphocytes, 16 as part of a prospectively randomized study. One moribund patient died before engraftment. Nine patients (6 ALL, 3 ANL) continued to have detectable leukemic cells. Twenty-four patients (70%) achieved CR. One of them died of viral hepatitis at 1 mo and another of viral interstitial pneumonitis at 4 mo in CR. Fourteen patients (7 ALL, 7 ANL) relapsed 2-16 mo (median 4) after transplantation. However, 8 patients (24%) (3 ALL, 5 ANL) remain in CR without any maintenance chemotherapy at 29-103 mo (median 80) after the transplant. The end results were not signficantly influenced by the type of leukemia, the immediated pre-CY chemotherapy, or the immunotherapy. The results show that this approach, even when applied to endstage patients with acute leukemia in relapse, causes tolerable morbidity, rare nonleukemic deaths, and frequent remissions, some of which represent cures. 相似文献