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- Andersson-Engels, S., et al.
(author)
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Tissue diagnostics using laser-induced fluorescence
- 1989
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In: Berichte der Bunsengesellschaft für Physikalische Chemie. - : Wiley. - 0005-9021. ; 93:3, s. 335-342
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Journal article (peer-reviewed)abstract
- We have performed extensive investigations of laser-induced fluorescence in animal and human tissue aimed at instant tissue characterization. Autofluorescence, as well as specific fluorescence from HPD/DHE and other photosensitizers, has been utilized. The studies have been focused on the demarcation of malignant tumours and atheroscleortic plaques. A nitrogen laser or an excimer-pumped dye laser was used to induce fluorescence, which was analysed with an intensified optical multichannel system. A fibre-optic sensor system was developed for the clinical work. Multi-colour fluorescence imaging has also been demonstrated along a line and equipment for two-dimensional imaging is being constructed. Dimensionless spectroscopic functions, which are not affected by factors that are clinically uncontrollable have been employed for optimum tissue discrimination. The investigations have so far been performed in a time-integrated mode, but time-resolved studies are now being initiated to fully exploit the diagnostic power of tissue laser-induced fluorescence. In addition to a presentation of our own work a brief review of tissue fluorescence studies performed by other groups is also given.
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2. |
- Bergqvist, D, et al.
(author)
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Abdominal injury from sporting activities
- 1982
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In: British journal of sports medicine. - : BMJ. - 1473-0480 .- 0306-3674. ; 16:2, s. 76-79
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Journal article (peer-reviewed)abstract
- The frequency of abdominal injury is rising. In an analysis of 1,354 cases of closed abdominal trauma sustained during a 30-year period (1950-1979) in Skaraborg County, Sweden, a distinct increase was found in the numbers associated with sporting activities. The severity of the injuries caused by sports likewise showed an increase. The representation of injured organs was of the same order as in the total series of closed abdominal injuries. An analysis of the 136 cases of sports-associated injury is presented with regard to cause and type of the injuries, diagnosis and prognosis.
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3. |
- Bergqvist, D, et al.
(author)
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Abdominal trauma in persons older than 60 years
- 1982
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In: Acta Chirurgica Scandinavica. - 0001-5482. ; 148:7, s. 569-573
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Journal article (peer-reviewed)abstract
- Abdominal trauma occurring in persons older than 60 years over a 30-year period (1950-79) in a well defined region of Sweden was reviewed. The 177 patients comprised 12.5% of the total with abdominal trauma during that period. Road traffic accidents were the main cause of trauma (48% of cases). The incidence of motor-car accidents rose sharply during the first two decades of the study. Injuries to the liver and bile ducts and multiple intra-abdominal injuries were more common in the elderly than in younger patients, but injury to the abdominal wall was less common. A tendency towards more severe injuries and multiple trauma with extra-abdominal involvement emerged during the study period. The mortality rate was 27.6% in the patients older than 60, but 9.1% in the overall patient series with abdominal trauma. One-third of all the deaths among the older patients were directly due to the abdominal trauma. One consequence of the increasing numbers of old people in the general population is probably that more and more cases of abdominal trauma will be seen in the higher age groups.
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5. |
- Bergqvist, D, et al.
(author)
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Intestinal trauma, Analysis of 101 cases
- 1981
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In: Acta Chirurgica Scandinavica. - 0001-5482. ; 147:8, s. 629-635
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Journal article (peer-reviewed)abstract
- Intestinal injuries sustained by 101 Swedish patients during the period 1950-1979 are reviewed. The abdominal trauma was blunt in 78 cases and penetrating in 23. Small-bowel and mesenteric, but not large-bowel, injuries showed increasing frequency. This was associated with rising numbers of motorcar accidents. Injuries to other abdominal organs were found in 56 of the 101 patients, particularly in those with mesenteric or large-bowel trauma. Clear physical signs of intra-abdominal injury led to rapid surgical exploration in most cases, but some operations were performed after relatively long observation. Most injuries, including those in the colon, were treated with primary repair or resection. Decompressive colostomy or exteriorization were rarely performed. Deaths were mainly caused by other factors than the type of operation. The mortality rate (35%) was constant.
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6. |
- Bergqvist, D, et al.
(author)
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Patients with abdominal trauma and fatal outcome: analysis of a 30-year series
- 1983
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In: Journal of Trauma. - 0022-5282. ; 23:6, s. 499-502
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Journal article (peer-reviewed)abstract
- Patients with blunt abdominal trauma and fatal outcome during 30 years in a well-defined rural Swedish area have been analyzed. There were 127 patients. Several facts indicate that more severe trauma has been appearing more often during this period The mortality rate has, however, been stable, but the patients have become older. More patients die from pulmonary complications than from the trauma itself. One very important development is the significant decrease in mortality among children.
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7. |
- Bergqvist, D, et al.
(author)
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Upper gastrointestinal trauma. Analysis of 45 cases of gastric, duodenal or pancreatic injury
- 1981
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In: Acta Chirurgica Scandinavica. - 0001-5482. ; 147:8, s. 637-643
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Journal article (peer-reviewed)abstract
- Injuries to the upper gastrointestinal tract occurring over a 30-year period in a geographically well defined region were analyzed. The incidence was low in comparison with other abdominal injuries, but duodenal and pancreatic injuries were increasingly common in the study's last decade. The stomach injuries were mainly caused by penetrating trauma. The duodenal and pancreatic injuries most commonly resulted from road-traffic accidents. Two duodenal injuries were overlooked at the initial exploration, in which the duodenum was incompletely exposed. Anastomotic insufficiency occurred in one of the three patients who underwent duodenal resection. Most of the pancreatic injuries were contusions that could be managed with drainage. The pancreas was severely damaged in five patients, all of whom had multiple intra-abdominal injuries. Three of the five patients died before or during operation.
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8. |
- Björkman, Sven, et al.
(author)
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Thermic and tremorogenic effects of thyroliberin (TRH) in reserpine-treated mice--the non-involvement of GABA-ergic mechanisms.
- 1981
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In: Journal of Pharmacy and Pharmacology (JPP). - : Oxford University Press (OUP). - 0022-3573 .- 2042-7158. ; 33:9, s. 580-585
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Journal article (peer-reviewed)abstract
- Administration of thyroliberin (TRH) to reserpinized mice causes tremor and counteracts the hypothermia in a dose-dependent fashion. The thyroliberin response is inhibited by gamma-hydroxybutyric acid (GHB) and baclofen, but not by other, more specific GABA-ergic agents, such as THIP, gamma-acetylenic GABA, and sodium valproate. Picrotoxin neither potentiates nor inhibits the thyroliberin actions. Nor are the thyroliberin effects dependent on cholinergic, monoaminergic or histaminergic mechanisms. The results repudiate a current hypothesis, that the peptide actions may be mediated by GABA-ergic pathways in the brain.
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