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51.
Clinical trial registration: a statement from the International Committee of Medical Journal Editors 下载免费PDF全文
52.
Shelly Haug Sara Farooqi Christopher G. Wilson Andrew Hopper Grace Oei Brian Carter 《Journal of pain and symptom management》2018,55(3):979-984.e2
Context
Infants of age less than one year have the highest mortality rate in pediatrics. The American Academy of Pediatrics published guidelines for palliative care in 2013; however, significant variation persists among local protocols addressing neonatal comfort care at the end-of-life (EOL).Objectives
The purpose of this study was to evaluate current neonatal EOL comfort care practices and clinician satisfaction across America.Methods
After institutional review board approval (516005), an anonymous, electronic survey was sent to members of the American Academy of Pediatrics Section on Neonatal-Perinatal Medicine. Members of the listserv include neonatologists, neonatal fellow physicians, neonatal nurses, and neonatal nurse practitioners from across America (U.S. and Canada).Results
There were 346/3000 (11.5%) responses with wide geographic distribution and high levels of intensive care responding (46.1% Level IV, 50.9% Level III, 3.0% Level II). Nearly half (45.2%) reported that their primary institution did not have neonatal comfort care guidelines. Of those reporting institutional neonatal comfort care guidelines, 19.1% do not address pain symptom management. Most guidelines also do not address gastrointestinal distress, anxiety, or secretions. Thirty-nine percent of respondents stated that their institution did not address physician compassion fatigue. Overall, 91.8% of respondents felt that their institution would benefit from further education/training in neonatal EOL care.Conclusion
Across America, respondents confirmed significant variation and verified many institutions do not formally address neonatal EOL comfort care. Institutions with guidelines commonly appear to lack crucial areas of palliative care including patient symptom management and provider compassion fatigue. The overwhelming majority of respondents felt that their institutions would benefit from further neonatal EOL care training. 相似文献53.
Temporary loss of perivascular aquaporin-4 in neocortex after transient middle cerebral artery occlusion in mice 下载免费PDF全文
Frydenlund DS Bhardwaj A Otsuka T Mylonakou MN Yasumura T Davidson KG Zeynalov E Skare O Laake P Haug FM Rash JE Agre P Ottersen OP Amiry-Moghaddam M 《Proceedings of the National Academy of Sciences of the United States of America》2006,103(36):13532-13536
The aquaporin-4 (AQP4) pool in the perivascular astrocyte membranes has been shown to be critically involved in the formation and dissolution of brain edema. Cerebral edema is a major cause of morbidity and mortality in stroke. It is therefore essential to know whether the perivascular pool of AQP4 is up- or down-regulated after an ischemic insult, because such changes would determine the time course of edema formation. Here we demonstrate by quantitative immunogold cytochemistry that the ischemic striatum and neocortex show distinct patterns of AQP4 expression in the reperfusion phase after 90 min of middle cerebral artery occlusion. The striatal core displays a loss of perivascular AQP4 at 24 hr of reperfusion with no sign of subsequent recovery. The most affected part of the cortex also exhibits loss of perivascular AQP4. This loss is of magnitude similar to that of the striatal core, but it shows a partial recovery toward 72 hr of reperfusion. By freeze fracture we show that the loss of perivascular AQP4 is associated with the disappearance of the square lattices of particles that normally are distinct features of the perivascular astrocyte membrane. The cortical border zone differs from the central part of the ischemic lesion by showing no loss of perivascular AQP4 at 24 hr of reperfusion but rather a slight increase. These data indicate that the size of the AQP4 pool that controls the exchange of fluid between brain and blood during edema formation and dissolution is subject to large and region-specific changes in the reperfusion phase. 相似文献
54.
Use of robotized DNA isolation and real-time PCR to quantify and identify close correlation between levels of Neisseria meningitidis DNA and lipopolysaccharides in plasma and cerebrospinal fluid from patients with systemic meningococcal disease 下载免费PDF全文
Øvstebø R Brandtzaeg P Brusletto B Haug KB Lande K Høiby EA Kierulf P 《Journal of clinical microbiology》2004,42(7):2980-2987
The present study, using robotized DNA isolation and quantitative PCR based on the Neisseria meningitidis-specific capsular transport A gene, demonstrates the ease, rapidity, specificity, and sensitivity of quantifying neisserial DNA in plasma (n = 65) and cerebrospinal fluid (CSF) (n = 12) from patients with systemic meningococcal disease. We found a close correlation between the levels of neisserial DNA and lipopolysaccharides in plasma (r = 0.905) and in CSF (r = 0.964). The median concentration of neisserial DNA in plasma in 23 patients with persistent shock was 2 x 10(7) copies/ml, versus <10(3) copies/ml in 42 nonshock patients. Furthermore, quantitative PCR made possible estimates of the total number of meningococci in plasma, as opposed to conventional blood cultures, suggesting about 1,000 dead meningococci for every viable bacterium. Finally, with logistic regression analyses, neisserial DNA may predict a patient's disease severity and outcome at hospital admission. The number of meningococci in plasma and CSF appears to be the main determinant of the lipopolysaccharide levels, clinical presentation, and outcome. 相似文献
55.
How to use the world's scarce selenium resources efficiently to increase the selenium concentration in food 总被引:1,自引:0,他引:1
Haug A Graham RD Christophersen OA Lyons GH 《Microbial Ecology in Health and Disease》2007,19(4):209-228
The world's rare selenium resources need to be managed carefully. Selenium is extracted as a by-product of copper mining and there are no deposits that can be mined for selenium alone. Selenium has unique properties as a semi-conductor, making it of special value to industry, but it is also an essential nutrient for humans and animals and may promote plant growth and quality. Selenium deficiency is regarded as a major health problem for 0.5 to 1 billion people worldwide, while an even larger number may consume less selenium than required for optimal protection against cancer, cardiovascular diseases and severe infectious diseases including HIV disease. Efficient recycling of selenium is difficult. Selenium is added in some commercial fertilizers, but only a small proportion is taken up by plants and much of the remainder is lost for future utilization. Large biofortification programmes with selenium added to commercial fertilizers may therefore be a fortification method that is too wasteful to be applied to large areas of our planet. Direct addition of selenium compounds to food (process fortification) can be undertaken by the food industry. If selenomethionine is added directly to food, however, oxidation due to heat processing needs to be avoided. New ways to biofortify food products are needed, and it is generally observed that there is less wastage if selenium is added late in the production chain rather than early. On these bases we have proposed adding selenium-enriched, sprouted cereal grain during food processing as an efficient way to introduce this nutrient into deficient diets. Selenium is a non-renewable resource. There is now an enormous wastage of selenium associated with large-scale mining and industrial processing. We recommend that this must be changed and that much of the selenium that is extracted should be stockpiled for use as a nutrient by future generations. 相似文献
56.
Arterial damage, causing ischemia of the limb, occurs in less than 5 per cent of all instances of thoracic outlet syndrome. Arterial complications are usually associated with cervical ribs or rudimentary first ribs, but 12 per cent have occurred in patients with no osseous abnormality. The physiopathologic factors begin with compression of the subclavian artery which, in most patients, produces stenosis, poststenotic dilatation, formation of aneurysms and mural thrombosis. In other patients, aneurysms do not form, but the compression still causes stenosis, intimal injury and mural thrombosis. With either scenario, distal embolization can occur and produce signs and symptoms of ischemia that can limb-threatening. In this study, more than 200 patients reported previously and five additional sides in four patients were reviewed. Treatment depends upon the condition of the patient at presentation. Those with osseous abnormalities and no aneurysm or symptoms are not treated, while those with poststenotic dilatation or small aneurysms undergo rib resection only. Aneurysms more than twice the arterial diameter, intimal injury or mural thrombus are indications to resect, replace or bypass the subclavian artery. Patients who have had distal embolization and severe ischemic symptoms require, in addition to the aforementioned, distal thromboembolectomy, dorsal sympathectomy or both. Good results from treatment have been reported in 84 per cent of the 137 patients reported since 1970; 3 per cent required amputation and 3 per cent had cerebral emboli. Because the severe arterial complications were primarily the result of delayed therapy, they can best be avoided by early recognition, diagnosis and treatment. 相似文献
57.
Effects of dietary long-chain polyunsaturated fatty acids on the essential fatty acid status of premature infants 总被引:12,自引:0,他引:12
B. Koletzko E. Schmidt H. J. Bremer M. Haug G. Harzer 《European journal of pediatrics》1989,148(7):669-675
The effect of different diets on the percentage content of long-chain polyunsaturated fatty acids (LCP; metabolites of linoleic and alpha-linolenic acids) in plasma lipids was studied in 29 premature infants on days 4 and 21 of life. Eleven infants were fed human milk which supplies LCP (1.7% of the fatty acids), 10 a commercially available milk formula without LCP, and 8 a new formula enriched with LCP of the omega-6 and the omega-3 series (0.5% LCP). LCP values in plasma lipids remained stable during the observation period in infants fed human milk. In contrast, LCP decreased markedly in plasma lipids of infants fed the conventional formula. Since the precursor fatty acids linoleic and alpha-linolenic acids were high in their diet and plasma, this finding indicates that premature infants have a limited capacity for LCP biosynthesis and may require their dietary supplementation. Infants fed the LCP enriched formula had significantly higher LCP proportions in plasma lipids than infants given the conventional formula, but less than infants fed human milk. Our results demonstrate that small concentrations of dietary LCP have marked effects on plasma lipid composition, particularly on phospholipids, suggesting that dietary LCP are preferentially channelled into structural lipids. We conclude that the essential fatty acid status of formula-fed premature infants can be improved by a supplementation of omega-6- and omega-3-LCP.Abbreviation LCP
long-chain polyunsaturated fatty acids 相似文献
58.
Vitamin K1 content of maternal milk: influence of the stage of lactation, lipid composition, and vitamin K1 supplements given to the mother 总被引:3,自引:0,他引:3
Using a sensitive electrochemical assay for vitamin K1 and standardized techniques for breast-milk collection, we studied the vitamin K1 content of human milk during the first 5 wk of lactation with respect to 1) individual and interindividual differences, 2) the relationship of vitamin K1 to other lipids, and 3) the influence of oral supplements of vitamin K1 on breast milk concentrations. Comparison of fore and hind milk from the mothers revealed higher vitamin K1 concentrations in hindmilks, suggesting that the lipid content influences the vitamin K1 concentration in maternal milk. Samples of maternal milk from nine mothers collected from day 1 to day 36 of lactation showed significantly higher vitamin K1 concentrations in colostral milk than in mature milk. For colostral milk there was a significant correlation of vitamin K1 to cholesterol (r = 0.62) but not to total lipid or phospholipid suggesting a role for cholesterol in the secretion of vitamin K1 into colostral milk. For mature milk correlation coefficients of vitamin K1 with all lipids were low (r = 0.29-0.37) suggesting that at later stages of lactation dietary fluctuations of vitamin K1 may be a more important determinant of the vitamin K1 content of breast milk than the lipid composition. To test the influence of diet, mothers were given oral supplements of vitamin K1.(ABSTRACT TRUNCATED AT 250 WORDS) 相似文献
59.
Dietary long chain polyunsaturates for premature infants 总被引:1,自引:0,他引:1
60.
Distante S Elmberg M Foss Haug KB Ovstebø R Berg JP Kierulf P Hultcrantz R Bell H 《Scandinavian journal of gastroenterology》2003,38(8):871-877
BACKGROUND: The majority of hemochromatosis patients are homozygous for the HFE-C282Y mutation. However, less than half of C282Y homozygous subjects identified by population screening studies actually develop the disease. The cytokine TNF-alpha is implicated in the regulation of iron metabolism at different levels. Our aim was to study the role of TNF-alpha and its promoter polymorphisms in the phenotypic expression of hemochromatosis in individuals with and without the C282Y mutation. METHODS: We studied 4 groups of 10 subjects each: (1) C282Y homozygotes without clinical hemochromatosis; (2) C282Y homozygotes with hemochromatosis; (3) secondary hemochromatosis (without C282Y mutation); and (4) controls. Groups were age-matched and sex-matched. Peripheral blood mononuclear cells (PBMC) were stimulated with lipopolysaccharide (LPS) and the release of TNF-alpha was measured. Additionally, the G/A polymorphisms at position -238 and -308 of the TNF-alpha, gene were determined by PCR and RFLP analysis in 178 hemochromatosis patients and 41 controls. RESULTS: TNF-alpha production from PBMC at 8 and 24 h after increasing concentrations of LPS stimulation were similar in the four groups. The prevalence of TNF-alpha polymorphisms was similar in patients and controls. The prevalences of cirrhosis, siderosis, median s-ferritin and median ALT values were similar in patients with and without the TNF-alpha polymorphisms. CONCLUSIONS: Neither TNF-alpha, released from PBMC nor the presence of TNF-alpha polymorphisms seem to be associated with disease manifestation in hemochromatosis. 相似文献