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排序方式: 共有327条查询结果,搜索用时 15 毫秒
1.
ABSTRACT. In a well defined geographical area a total of 1590 accidents related to home products in children 0–15 years of age were prospectively registered. The incidence of product-related accidents was 279 per 10 000 children per year. A higher incidence in boys and a decreasing incidence of accidents with age was found. The most common localization of lesions was upper extremities 41% and face and skull 30%. In children 0–4 years of age household and child furniture, constructional features of the house and corrosives, hot liquids and heating equipment were the most common products causing accidents, whereas in children 5–15 years of age playthings and sports equipment as well as constructional features of the house were involved in a higher percentage of accidents. 相似文献
2.
Seven middle-aged men with manifest type II diabetes mellitus underwent an endurance training programme for 10–15 weeks. The maximal aerobic capacity, as well as the endurance capacity, was improved by 10% (p<0.05). The intramuscular glycogen store increased by more than 80% (p<0.05) from 350 μmol/g dw (dry weight), and the activities of citrate synthase and 3-hydroxy-acyl-CoA dehydrogenase increased by more than 50% (p<0.05) and 30% (p<0.05). The activity of glycogen synthase was decreased by approximately 20% (p<0.05), whereas lactate dehydrogenase remained unchanged. Capillaries/fibre and fibre area increased by more than 50% (p<0.05) and 30% (p<0.05) leaving the area of supply constant. Training did not influence fasting blood lipids and glucose, glycosylated hemoglobin, oral glucose tolerance, and insulin response to an oral glucose load measured 72 hours post-exercise. It is concluded that patients with manifest type II diabetes, as normoglycaemic individuals, adapt to physical training. However, no persistent effect on glucohomeostasis and lipaemia is produced by short-term training in the diabetic patients. 相似文献
3.
Evaluation of an Educational Programme for Telephone Advisers in Primary Health Care 总被引:1,自引:0,他引:1
Marklund B, Silfverhielm B and Bengtsson C. Evaluation of aneducational programme for telephone advisers in primary healthcare. Family Practice 1989; 6: 263267. Telephone advisers, usually registered nurses, have a very importantrole in the Swedish primary health care service. In order toimprove this service, a special educational programme has beenworked out for registered nurses working at a Swedish healthcentre. The purpose of this paper is to evaluate this educationalprogramme at one of the health centres. The quality of the telephoneadvice was evaluated by a blind observer. After the educationalprogramme the quality of advice was improved. Among the participatingnurses, the confidence and the satisfaction with the work increasedafter the educational programme. 相似文献
4.
NILS DAHLGREN BENGT NILSSON TAKEFUMI SAKABE BO K. SIESJ
《Acta physiologica (Oxford, England)》1981,111(4):475-485
The effect of the fatty acid cyclo-oxygenase inhibitor indomethacin on cerebral blood flow (CBF) and the metabolic rate for oxygen (CMRO2) was studied in paralyzed and artificially ventilated rats. In normocapnic animals, the drug (10 mg·kg-1i. v.) reduced CBF to 50% of control without a measurable effect on CMRO2. During hypercapnia (PaCO2 70–80 mmHg) the increase in CBF was reduced by about 80% but CMRO2 remained unchanged. Autoradiographic evaluation of local CBF in 20 brain structures indicated that the reduction in CBF was relatively uniform throughout the brain. Dose response curves showed that an effect on CBF was evident already at an indomethacin dose of 1 mg·kg-1 and maximal effects were obtained with 3–5 mg·kg-1. Following i. v. injection of the drug reduction in CBF was observed already after 10 s and the full response occurred after 1–2 min. It is concluded that metabolites of arachidonic acid, possibly mainly prostacyclin, are powerful modulators of normal cerebrovascular tone, and help to mediate the CBF response to increased CO2 tensions. However, since indomethacin does not modify the circulatory response in other conditions with increased CBF these substances do not qualify as general coupling factors controlling CBF in physiological or pathological states. 相似文献
5.
TORE K. USKI KARL-ERIK ANDERSSON LENNART BRANDT BENGT LJUNGGREN 《Acta physiologica (Oxford, England)》1984,121(4):369-378
The contractile and relaxant effects of various prostanoids were studied on isolated human pial arteries. Contractions were elicited with the following order of potency: U46619?U44069>PGB2>PGF2a>PGE2?PGD2>PGF1a≥TXB2, indicating that prostanoid-induced contractions probably are mediated by a thromboxane-sensitive receptor. Relaxation of PGF2a-contracted arteries was induced with the order of potency: PGE2> PGE1>PGD2?PGD1. Vessels contrated by K+ were relaxed only by PGE,. Since PGI2 was previously found to be more potent than all the prostanoids tested in the present study, relaxant responses are probably mediated via a PGI2-sensitive receptor. The roles of free extracellular and cellularly bound calcium for the contractile effects of PGF2a and K+ were estimated by incubating the arteries for various times in calcium-free medium containing 10-5 M EGTA. Incubation for 5–10 min abolished K+-induced contractions, whereas after 40 min of incubation PGF2a still induced contractions that reached 70% of control. The PGF2a-induced contraction was biphasic in 8 out of 10 preparations. The second phase could be eliminated by increasing the EGTA-concentration to 10-4 M, as well as by nifedipine pretreatment. In calcium-free, high K+ medium calcium-induced contractions were elicited at lower concentrations in the presence of PGF2a. The results suggest that PGF2a-induced contractions in human pial arteries are relatively independent of free extracellular calcium. PGF2a may promote trans-membrane influx of calcium, as well as release calcium from seemingly superficially located cellular stores. 相似文献
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7.
BENGT ANDRÉASSON MAGNUS LINDROTH NILS W. SVENNINGSEN BJÖRN DREFELDT GERT-INGE JÖNSSON LISBET NIKLASON BJÖRN JONSON 《Acta paediatrica (Oslo, Norway : 1992)》1989,78(2):194-204
ABSTRACT. A new method has been evaluated for measuring ventilation and lung mechanics in spontaneously breathing infants by means of a face chamber. Airway flow is measured with a pneumotachograph inserted between the face chamber and a stable pressure source. Oesophageal pressure is measured via a water-filled oesophageal catheter. The method is suitable for use in conjunction with continuous positive airway pressure (CPAP) treatment in neonatal intensive care. A flat frequency response curve up to 15 Hz for the two measuring systems (i.e., airway flow and oesophageal pressure), and a time shift between the two respective signals of less than 2 msec are prerequisites for correct evaluation of respiratory mechanics. In preterm infants with chest distortion, the inhomogeneity of pleural pressure affects the significance of resistance and compliance values, as calculated from oesophageal pressure. Supra-diaphragmatic pressure variations reflect the resistive and elastic load on the diaphragm exerted by the lungs and thorax. Thus, oesophageal pressure is still useful in studies of respiratory mechanics in preterm infants. 相似文献
8.
Plasma Valine and Urinary C-Peptide in Breast-fed and Artificially Fed Infants up to 6 Months of Age
B. E. GINSBURG B. S. LINDBLAD A. LUNDSJÖ B. PERSSON R. ZETTERSTRÖM 《Acta paediatrica (Oslo, Norway : 1992)》1984,73(2):213-217
ABSTRACT. Plasma branched-chain amino acids and urinary C-peptide-creatinine excretion was determined at 3, 41/2 and 6 months of age in a group of 50 infants who were either breast-fed or artificially fed and selected at random. The average concentrations of valine in plasma and C-peptide in urine as well as the ratio between C-peptide and creatinine in urine were 2–3 times higher ( p < 0.01) in artificially fed as compared to breast-fed infants at all the ages studied. Plasma valine values correlated significantly with the urinary C-peptide/creatinine ratio ( r = 0.76, p < 0.01), which suggests that the enhanced insulin response induced by the artificial formula is related to its protein content. 相似文献
9.
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