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| 2. |
- Dasu, Alexandru, et al.
(författare)
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Treatment modelling : the influence of micro-environmental conditions.
- 2008
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Ingår i: Acta Oncol. - : Informa Healthcare. - 1651-226X .- 0284-186X. ; 47:5, s. 896-905
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The interest in theoretical modelling of radiation response has grown steadily from a fast method to estimate the gain of new treatment strategies to an individualisation tool that may be used as part of the treatment planning algorithms. While the advantages of biological optimisation of plans are obvious, accurate theoretical models and realistic information about the micro-environmental conditions in tissues are needed. This paper aimed to investigate the clinical implications of taking into consideration the details of the tumour microenvironmental conditions. The focus was on the availability of oxygen and other nutrients to tumour cells and the relationship between cellular energy reserves and DNA repair ability as this is thought to influence the response of the various hypoxic cells. The choice of the theoretical models for predicting the response (the linear quadratic model or the inducible repair model) was also addressed. The modelling performed in this project has shown that the postulated radiobiological differences between acute and chronic hypoxia have some important clinical implications which may help to understand the mechanism behind the current success rates of radiotherapy. The results also suggested that it is important to distinguish between the two types of hypoxia in predictive assays and other treatment simulations.
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| 3. |
- Dasu, Alexandru, et al.
(författare)
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Vascular oxygen content and the tissue oxygenation--a theoretical analysis.
- 2008
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Ingår i: Med Phys. - : American Association of Physicists in Medicine (AAPM). - 0094-2405. ; 35:2, s. 539-45
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Several methods exist for evaluating tumor oxygenation as hypoxia is an important prognostic factor for cancer patients. They use different measuring principles that highlight various aspects of oxygenation. The results could be empirically correlated, but it has been suspected that there could be discordances in some cases. This study describes an analysis of the relationship between vascular and tissue oxygenations. Theoretical simulation has been employed to characterize tissue oxygenations for a broad range of distributions of intervessel distances and vascular oxygenations. The results were evaluated with respect to the implications for practical measurements of tissue oxygenations. The findings showed that although the tissue oxygenation is deterministically related to vascular oxygenation, the relationship between them is not unequivocal. Variability also exists between the fractions of values below the sensitivity thresholds of various measurement methods which in turn could be reflected in the power of correlations between results from different methods or in the selection of patients for prognostic studies. The study has also identified potential difficulties that may be encountered at the quantitative evaluation of the results from oxygenation measurements. These could improve the understanding of oxygenation measurements and the interpretation of comparisons between results from various measurement methods.
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| 5. |
- Jukkala, Tanya, et al.
(författare)
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Economic strain, social relations, gender, and binge drinking in Moscow
- 2008
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Ingår i: Social Science and Medicine. - Oxford : Elsevier BV. - 0277-9536 .- 1873-5347. ; 66, s. 663-674
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Tidskriftsartikel (refereegranskat)abstract
- The harmful effects of alcohol consumption are not necessarily limited to the amounts consumed. Drinking in binges is a specific feature of Russian alcohol consumption that may be of importance even for explaining the current mortality crisis. Based on interviews conducted with a stratified random sample of 1190 Muscovites in 2004, this paper examines binge drinking in relation to the respondents’ economic situation and social relations. Consistent with prior research, this study provides further evidence for a negative relationship between educational level and binge drinking. Our results also indicate a strong but complex link between economic strain and binge drinking. The odds ratios for binge drinking of men experiencing manifold economic problems were almost twice as high compared to those for men with few economic problems. However, the opposite seemed to be true for women. Being married or cohabiting seemed to have a strong protective effect on binge drinking among women compared to being single, while it seemed to have no effect at all among men. Women having regular contact with friends also had more than twice the odds for binge drinking compared to those with little contact with friends, while again no effect was found among men. Gender roles and the behavioural differences embedded in these, may explain the difference. The different effects of economic hardship on binge drinking may also constitute an important factor when explaining the large mortality difference between men and women in Russia.
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| 6. |
- Roxberg, Åsa, 1953-, et al.
(författare)
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The meaning of consolation as experienced by nurses in a home-care setting
- 2008
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Ingår i: Journal of Clinical Nursing. - Chichester : Wiley-Blackwell. - 0962-1067 .- 1365-2702. ; 17:8, s. 1079-1087
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Tidskriftsartikel (refereegranskat)abstract
- Aims and objective. The aim of this study was to illuminate nurses’ experiences of consolation and how these experiences relate to suffering and care.Background. Consolation is commonly associated with the relief of suffering. The question of consolation in terms of its definition and relevance for care has, however, been a matter of discussion among nurse researchers. The question raised concerns about the nature of consolation, its place and its role in relation to care and the caring sciences.Design. An explorative qualitative interview study with 12 participants, six registered and six enrolled nurses, was carried out in a home-care context.Methods. A phenomenological-hermeneutic method inspired by the French philosopher Paul Ricoeur was used for the text analysis.Results. Two main aspects of consolation appeared: ‘the present consolation’, which is flexible, sustaining and opening and ‘the absent consolation’, which conceals the suffering and is incapable of consoling. The result was interpreted from a philosophical-ethical perspective, based on the works of Levinas and Lögstrup.Conclusions. Consolation appears as a complex phenomenon, both in terms of its existence and its absence consolation, constituting a caring and non-caring consolation. A caring consolation entails meeting the other as different and being present in a way that gives the other space to be the one he or she really is. It requires acceptance, accepting the sufferer and his/her way of suffering as unique.Relevance to clinical practice. The clinical nurse is involved in complex care situations, which entails both reflecting upon and using intuition when consoling. A caring consolation is a contradictory phenomenon that requires a nurse to be capable of both reflecting upon and acting intuitively on the unique suffering of the other. © 2008 Blackwell Publishing Ltd.
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| 7. |
- Öresland, Stina, et al.
(författare)
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Nurses as guests or professionals in home health care
- 2008
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Ingår i: Nursing Ethics. - : SAGE Publications. - 0969-7330 .- 1477-0989. ; 15:3, s. 371-383
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Tidskriftsartikel (refereegranskat)abstract
- The aim of this study was to explore and interpret the diverse subject of positions, or roles, that nurses construct when caring for patients in their own home. Ten interviews were analysed and interpreted using discourse analysis. The findings show that these nurses working in home care constructed two positions: 'guest' and 'professional'. They had to make a choice between these positions because it was impossible to be both at the same time. An ethics of care and an ethics of justice were present in these positions, both of which create diverse ethical appeals, that is, implicit demands to perform according to a guest or to a professional norm.
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| 8. |
- Thuresson, Marie, et al.
(författare)
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Factors that influence the use of ambulance in acute coronary syndrome.
- 2008
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Ingår i: American heart journal. - Amsterdam : Elsevier BV. - 1097-6744 .- 0002-8703. ; 156:1, s. 170-6
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: National guidelines recommend activation of the emergency medical service by patients who have symptoms of acute coronary syndrome (ACS). In spite of this, only 50% to 60% of persons with myocardial infarction initiate care by using the emergency medical service. The aim of this study was to define factors influencing the use of ambulance in ACS. METHODS: The method used in this study was a national survey comprising intensive cardiac care units at 11 hospitals in Sweden; 1,939 patients with diagnosed ACS and symptom onset outside the hospital completed a questionnaire a few days after admission. RESULTS: Half of the patients went to the hospital by ambulance. Factors associated with ambulance use were knowledge of the importance of quickly seeking medical care and calling for an ambulance when having chest pain (odds ratio [OR] 3.61, 95% CI 2.43-5.45), abrupt onset of pain reaching maximum intensity within minutes (OR 2.08, 1.62-2.69), nausea or cold sweat (OR 2.02, 1.54-2.65), vertigo or near syncope (OR 1.63, 1.21-2.20), ST-elevation ACS (OR 1.58, 1.21-2.06), increasing age (per year) (OR 1.03, 1.02-1.04), previous history of heart failure (OR 2.48, 1.47-4.26), and distance to the hospital of >5 km (OR 2.0, 1.55-2.59). Those who did not call for an ambulance thought self-transport would be faster or did not believe they were sick enough. CONCLUSIONS: Symptoms, patient characteristics, ACS characteristics, and perceptions and knowledge were all associated with ambulance use in ACS. The fact that knowledge increases ambulance use and the need for behavioral change pose a challenge for health-care professionals.
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| 9. |
- Bergquist, Annika, et al.
(författare)
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Increased risk of primary sclerosing cholangitis and ulcerative colitis in first-degree relatives of patients with primary sclerosing cholangitis
- 2008
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Ingår i: Clinical Gastroenterology and Hepatology. - New York : Elsevier. - 1542-3565 .- 1542-7714. ; 6:8, s. 939-943
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Tidskriftsartikel (refereegranskat)abstract
- Background & Aims: The importance of genetic factors for the development of primary sclerosing cholangitis (PSC) is incompletely understood. This study assessed the risk of PSC and inflammatory bowel disease (IBD) among first-degree relatives of patients with PSC, compared with the first-degree relatives of a cohort without PSC. Methods: Subjects from the national Swedish cohort of PSC patients (n = 678) were matched for date of birth, sex, and region to up to 10 subjects without a diagnosis of PSC (n = 6347). Linkage through general population registers identified first-degree relatives of subjects in both the PSC and comparison cohorts (n = 34,092). Diagnoses among first-degree relatives were identified by using the Inpatient Register. Results: The risk of cholangitis was statistically significantly increased in offspring, siblings, and parents of the PSC patient cohort, compared with relatives of the comparison cohort, with the hazard ratios and 95% confidence intervals, 11.5 (1.6–84.4), 11.1 (3.3–37.8), and 2.3 (0.9–6.1), respectively. The hazard ratios for ulcerative colitis (UC) among first-degree relatives of all PSC patients was 3.3 (2.3–4.9) and for Crohn's disease 1.4 (0.8–2.5). The risk of UC for relatives of PSC patients without IBD was also increased, 7.4 (2.9–18.9). Conclusions: First-degree relatives of patients with PSC run an increased risk of PSC, indicating the importance of genetic factors in the etiology of PSC. First-degree relatives of PSC patients without IBD are also at an increased risk of UC, which might indicate shared genetic susceptibility factors for PSC and UC.
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| 10. |
- Lundmark, Linda, et al.
(författare)
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Vilka är ute i naturen? Delresultat från en nationell enkät om friluftsliv och naturturism i Sverige
- 2008
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Samlingsverk (redaktörskap) (övrigt vetenskapligt/konstnärligt)abstract
- Detta är en av fyra rapporter som ger en översiktlig bild av resultaten från en nationell enkätundersökning om friluftsliv och naturturism i Sverige. Studien är genomförd av forskningsprogrammet Friluftsliv i förändring. Resultaten som presenteras här fokuserar bl a på vilka som är ute i naturen och vilka aktiviteter man ägnar sig åt. Nästan alla uppfattar skogar, fjäll, sjöar och hav som ”natur” men det är inte alls lika självklart med t.ex. badstränder, trädgårdar och elljusspår. Mer än hälften av de svarande är ute i naturen ganska ofta, eller mycket ofta, under vardagar. Under längre ledigheter ökar denna andel till 89 %. Naturen är också en central miljö för barns uppväxt och t.ex. har hela 94 % av de svarande ofta, eller mycket ofta, tillbringat lov och semestrar i naturen. Nöjes- och motionspromenader är vanligast att ha ägnat sig åt åtminstone en gång under en 12- månadersperiod (nästan 95 % av de svarande), följt av strövat i skog och mark (90 %), arbetat i trädgården (84 %), solbadat (81 %), och haft picknick eller grillat i naturen (80 %). Även om vi ser till de aktiviteter som är vanligast att ägna sig åt ofta (mer än 60 gånger per år) så toppas listan av nöjes- och motionspromenader (ca 32 %), följt av cykla på vägar, arbeta i trädgården, ströva i skog och mark och promenera med hund. Vi har också gjort en fördjupad analys när det gäller de tio vanligaste aktiviteterna som de svarande angett att de utövat mer än 20 gånger under en 12-månadersperiod (ca 1-2 gånger per månad). Det visar sig då att kvinnorna generellt är mer aktiva. Jogging/terränglöpning, jakt och fiske är mer vanligt bland män medan solbad, picknick och stavgång är mer representerat hos kvinnor. Gruppen under 30 år skiljer ut sig något genom att promenera med hund är vanligare och arbete i trädgården mindre vanligt, jämfört med övriga grupper. Joggning/terränglöpning tycks också vara en aktivitet främst hos yngre och medelålders, medan det omvända gäller för stavgång. Föräldrarnas uppväxtland tycks inte ha så stor betydelse för vilka aktiviteter man väljer, men svarande med svenska föräldrar utövar aktiviteterna i större utsträckning jämfört med personer vars föräldrar vuxit upp utomlands. Ett undantag finns emellertid för picknick eller att grilla i naturen vilket är vanligare hos svarande med utländska föräldrar.
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