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51.
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Glen C. Griffin 《Postgraduate medicine》2013,125(7):27-29
Healthcare reform threatens to jeopardize the role of physicians in deciding what is appropriate care for their patients. Factors outside the doctor-patient relationship, such as a global budget and limited access, will exert increasing influence on the decision-making process, according to Dr Dewberry. In this commentary, he explores the roots of this dangerous trend and suggests that physicians take an uncompromising stance against it. 相似文献
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Karl A. Sporer Nicholas J. Johnson Clement C. Yeh Glen M. Youngblood 《Prehospital emergency care》2013,17(4):470-478
Objective. The Medical Priority Dispatch System is an emergency medical dispatch (EMD) system that is widely used to categorize 9-1-1 calls andoptimize resource allocation. This study evaluates the ability of EMD andnon-EMD codes (calls not processed by EMD) to predict prehospital use of medications andprocedures. Methods. All transported prehospital patients placed in an EMD or non-EMD category that exceeded 500 total calls from January 1, 2004, to December 31, 2006, in a suburban California county were matched with their prehospital electronic patient care record. These records (N = 69,541) were queried for the following prehospital interventions: basic life support (BLS) care only, intravenous line placement only, medication given, andprocedures. Advanced life support (ALS) interventions were defined as the administration of a medications or a procedure. The numbers of medications andprocedures that were performed on patients in each EMD code were measured. Results. Thirty-one of 141 EMD andnon-EMD codes met inclusion criteria andcomprised 73% of all calls during the study period. Non-EMD codes accounted for 48% of all calls in this study. Patients with shortness of breath, chest pain, diabetic problems, andaltered mental status received the most medications. High rates of medication administration were also seen in the following codes: 17A (fall, 27%), 17B (fall, 14%), EMDX (unable to complete EMD process, 22%), MED (medical aid requested—details to follow, 26%), andMED3 (medical aid requested by police—code 3, 18%). Procedures were performed on only 0.9% of all calls, of which 75% were related to advanced airways. Higher rates of ALS interventions in higher-acuity categories (Alpha, Bravo, etc.) were seen in a number of EMD categories, including seizure, laceration/hemorrhage, sick, andtraffic accident, but not seen in many categories, including abdominal pain, falls, andchest pain. Conclusions. This study demonstrated only a modest ability of the EMD system to predict which patients would require ALS intervention. There were limited differences noted in the ALS rates between the different codes (Alpha, Bravo, etc.) in the same complaint category, bringing into question the utility of the multiple subgroups. Non-EMD codes made up a large portion of calls (48%) andshould be included in future studies. 相似文献
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Abstract Earlier this year, a 14-year-old boy from Canton, Massachusetts was convicted for beating to death a fellow student. One defense psychiatrist at the trial, Dr. Bernard Yudowitz, argued that the documentary film Faces of Death had inspired Rod Matthews to commit this murder by swinging a wooden Louisville Slugger at Shaun Quillette at least three times. After watching the film, Matthews said the “he needed to see what it was like to kill someone,” commented Yudowitz. 相似文献
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Chung Owyang MD Hunter Heath III MD Glen W. Sizemore MD Dr. Vay Liang W GO MD 《Digestive diseases and sciences》1978,23(12):1084-1088
We compared the effects of exogenous pentagastrin and meal-stimulated gastrin on plasma immunoreactive calcitonin (iCT) in various studies of 13 normal adult men. Bolus intravenous injection of pentagastrin (0.5 μg/kg) produced increases of iCT in 8 of 9 men. There was a linearly increasing response of iCT concentrations to increasing doses of pentagastrin (0.0625, 0.125, 0.25, and 0.5 μg/kg) and to achieved serum immunoreactive pentagastrin concentrations (r=0.72, P<0.01). To determine the effects of endogenous gastrin upon peripheral iCT concentrations, we measured serum immunoreactive gastrin (iG) and plasma iCT in four men at frequent intervals for 240 min after ingestion of low-(100 mg) and high- (400 mg) calcium meals. Serum iG increased in all subjects, with a peak at ~30 min. However, plasma iCT levels were unchanged from basal throughout the study. The increase of pentagastrin (0.3 pmol/ml) which caused a barely detectable increase of iCT was five-to tenfold greater than the mean maximal increases of gastrin after low- and high-calcium meals (0.04 and 0.06 pmol/ml, respectively). These results suggest that increases of plasma iCT concentrations after administration of pentagastrin in man reflect pharmacologic phenomena and that postprandial gastrin secretion may be insufficient to affect peripheral iCT concentrations. 相似文献
59.
Chemoradiotherapy, the combination of chemotherapy and radiotherapy to treat cancer, has the potential to enhance local therapeutic effects and simultaneously treat systemic disease. However, chemoradiotherapy may also enhance normal tissue effects leading to both acute and late toxicities. Furthermore, subtherapeutic chemoradiotherapy may result in aggressive tumor repopulation. Tumor-specific radiosensitizing chemotherapy may yield a synergistic therapeutic effect and avoid augmentation of normal tissue toxicity. In this study, the radiosensitizing effects of gossypol were investigated. Also, Pluronics were studied for gossypol solubilization and co-radiosensitization effects. Gossypol inhibits Bcl-2 and Bcl-XL, antiapoptotic proteins that are overexpressed in various cancer cells. Pluronic micelles (P85, F88, L35, and P123) effectively encapsulated gossypol, raising its water solubility by more than 1000-fold. Cytotoxic, anticlonogenic, and radiosensitizing effects were evaluated to characterize gossypol and Pluronic combinations. Gossypol and P85 had the strongest antiproliferative effect on A549 human lung adenocarcinoma cells in a cell viability assay. The IC50 value was seven times lower than gossypol only treatment (330 ± 70 nM vs 2400 ± 400 nM, (mean ± SE)). Gossypol and P85 showed significant inhibition of clonogenic survival, approximately 30% inhibition, compared to treatment with gossypol alone. An experimental sequencing study demonstrated greater inhibition of clonogenic survival when drug treatment followed radiation compared to a sequence of drug treatment followed by radiation. These results suggest that Pluronic micelles readily solubilize gossypol and that the combination of gossypol and P85 may augment the therapeutic effects of ionizing radiation.KEY WORDS: chemoradiotherapy, gossypol, Pluronic, polymeric micelles, radiosensitization 相似文献
60.
Thomas A. Ruffolo Stuart Sherman Dr. Glen A. Lehman MD Robert H. Hawes 《Digestive diseases and sciences》1994,39(2):289-292
Theoretically, relative distal common bile duct obstruction due to sphincter of Oddi dysfunction may be a cause of poor gallbladder evacuation observed on quantitative cholescintigraphy. In this study, the relationship of sphincter of Oddi dysfunction to the gallbladder ejection fraction by quantitative cholescintigraphy was explored. Eighty-one patients with biliary-type pain and otherwise normal evaluations underwent quantitative cholescintigraphy, sphincter of Oddi manometry, and ERCP. Abnormalities of stimulated quantitative cholescintigraphy and/or sphincter of Oddi manometry were present in 70% of this study group. Manometric evidence of sphincter dysfunction was present in patients with similar frequency irrespective of the degree of gallbladder evacuation. In conclusion, abnormalities of quantitative cholescintigraphy and sphincter manometry appear to be independent factors, although frequent findings in this patient population. 相似文献