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  • Rystedt, Jenny M. L., et al. (författare)
  • Post cholecystectomy bile duct injury : early, intermediate or late repair with hepaticojejunostomy - an E-AHPBA multi-center study
  • 2019
  • Ingår i: HPB. - : Elsevier. - 1365-182X .- 1477-2574. ; 21:12, s. 1641-1647
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Treatment of bile duct injuries (BDI) during cholecystectomy depends on the severity of injury and the timing of diagnosis. Standard of care for severe BDIs is hepaticojejunostomy. The aim of this retrospective multi-center study was to assess the optimal timing for repair of BDI with hepaticojejunostomy.Methods: Members of the European-African HepatoPancreatoBiliary Association were invited to report all consecutive patients with hepaticojejunostomy after BDI from January 2000 to June 2016. Patients were stratified according to the timing of biliary reconstruction with hepaticojejunostomy: early (day 0-7), intermediate (1-6 weeks) and late (6 weeks-6 months). Primary endpoint was re-intervention >90 days after the hepaticojejunostomy and secondary endpoints were severe 90-day complications and liver-related mortality.Results: In total 913 patients from 48 centers were included in the analysis. In 401 patients (44%) the bile duct injury was diagnosed intraoperatively, and 126 patients (14%) suffered from concomitant vascular injury. In multivariable analysis the timing of hepaticojejunostomy had no impact on postoperative complications, the need for re-intervention after 90 days nor liver-related mortality. The rate of re-intervention more than 90 days after the hepaticojejunostomy was significantly increased in male patients but decreased in older patients. Severe co-morbidity increased the risk for liver-related mortality (HR 3.439; CI 1.37-8.65; p = 0.009).Conclusion: After BDI occurring during cholecystectomy, the timing of biliary reconstruction with hepaticojejunostomy did not have any impact on severe postoperative complications, the need for re-intervention or liver-related mortality. Individualised treatment after iatrogenic bile duct injury is still advisable.
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  • Fu, M., et al. (författare)
  • Adherence to optimal heart rate control in heart failure with reduced ejection fraction : insight from a survey of heart rate in heart failure in Sweden (HR-HF study)
  • 2017
  • Ingår i: Clinical Research in Cardiology. - : SPRINGER HEIDELBERG. - 1861-0684 .- 1861-0692. ; 106:12, s. 960-973
  • Tidskriftsartikel (refereegranskat)abstract
    • Despite that heart rate (HR) control is one of the guideline-recommended treatment goals for heart failure (HF) patients, implementation has been painstakingly slow. Therefore, it would be important to identify patients who have not yet achieved their target heart rates and assess possible underlying reasons as to why the target rates are not met. The survey of HR in patients with HF in Sweden (HR-HF survey) is an investigator-initiated, prospective, multicenter, observational longitudinal study designed to investigate the state of the art in the control of HR in HF and to explore potential underlying mechanisms for suboptimal HR control with focus on awareness of and adherence to guidelines for HR control among physicians who focus on the contributing role of beta-blockers (BBs). In 734 HF patients the mean HR was 68 +/- 12 beats per minute (bpm) (37.2% of the patients had a HR > 70 bpm). Patients with HF with reduced ejection fraction (HFrEF) (n = 425) had the highest HR (70 +/- 13 bpm, with 42% > 70 bpm), followed by HF with preserved ejection fraction and HF with mid-range ejection fraction. Atrial fibrillation, irrespective of HF type, had higher HR than sinus rhythm. A similar pattern was observed with BB treatment. Moreover, non-achievement of the recommended target HR (< 70 bpm) in HFrEF and sinus rhythm was unrelated to age, sex, cardiovascular risk factors, cardiovascular diseases, and comorbidities, but was related to EF and the clinical decision of the physician. Approximately 50% of the physicians considered a HR of > 70 bpm optimal and an equal number considered a HR of > 70 bpm too high, but without recommending further action. Furthermore, suboptimal HR control cannot be attributed to the use of BBs because there was neither a difference in use of BBs nor an interaction with BBs for HR > 70 bpm compared with HR < 70 bpm. Suboptimal control of HR was noted in HFrEF with sinus rhythm, which appeared to be attributable to physician decision making rather than to the use of BBs. Therefore, our results underline the need for greater attention to HR control in patients with HFrEF and sinus rhythm and thus a potential for improved HF care.
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  • Svalkvist, Angelica, et al. (författare)
  • Evaluation of an improved method of simulating lung nodules in chest tomosynthesis.
  • 2012
  • Ingår i: Acta radiologica. - : Informa Healthcare / Wiley-Blackwell / Royal Society of Medicine Press. - 1600-0455 .- 0284-1851. ; 53:8, s. 874-884
  • Tidskriftsartikel (refereegranskat)abstract
    • BackgroundSimulated pathology is a valuable complement to clinical images in studies aiming at evaluating an imaging technique. In order for a study using simulated pathology to be valid, it is important that the simulated pathology in a realistic way reflect the characteristics of real pathology.PurposeTo perform a thorough evaluation of a nodule simulation method for chest tomosynthesis, comparing the detection rate and appearance of the artificial nodules with those of real nodules in an observer performance experiment.Material and MethodsA cohort consisting of 64 patients, 38 patients with a total of 129 identified pulmonary nodules and 26 patients without identified pulmonary nodules, was used in the study. Simulated nodules, matching the real clinically found pulmonary nodules by size, attenuation, and location, were created and randomly inserted into the tomosynthesis section images of the patients. Three thoracic radiologists and one radiology resident reviewed the images in an observer performance study divided into two parts. The first part included nodule detection and the second part included rating of the visual appearance of the nodules. The results were evaluated using a modified receiver-operating characteristic (ROC) analysis.ResultsThe sensitivities for real and simulated nodules were comparable, as the area under the modified ROC curve (AUC) was close to 0.5 for all observers (range, 0.43-0.55). Even though the ratings of visual appearance for real and simulated nodules overlapped considerably, the statistical analysis revealed that the observers to were able to separate simulated nodules from real nodules (AUC values range 0.70-0.74).ConclusionThe simulation method can be used to create artificial lung nodules that have similar detectability as real nodules in chest tomosynthesis, although experienced thoracic radiologists may be able to distinguish them from real nodules.
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6.
  • Dalen, Magnus, et al. (författare)
  • Percutaneous Fluoroscopic-Guided Endomyocardial Delivery in an Experimental Model of Left Ventricular Assist Device Support
  • 2015
  • Ingår i: Journal of Cardiovascular Translational Research. - 1937-5387 .- 1937-5395. ; 8:6, s. 381-384
  • Tidskriftsartikel (refereegranskat)abstract
    • Endomyocardial delivery in the setting of active left ventricular assist device (LVAD) support has rarely been studied. The objective was to establish a protocol for endomyocardial injections during LVAD support without compromising mechanical circulation. LVAD implantation was performed in four pigs. A curved needle catheter was percutaneously inserted into the right carotid artery and positioned into the left ventricle under fluoroscopic guidance. In the setting of increasing LVAD flows (2.3-3.1 l/min), percutaneous methylene blue dye administration into the myocardium proceeded without complications in all pigs. Transection of excised hearts revealed an anterior, lateral, inferior, and septal wall distribution of methylene blue documenting injections in all four regions of the left ventricle. Ex vivo, the catheter could be maneuvered close to the LVAD inflow cannula despite augmentation of LVAD flow up to 5 l/min. Endomyocardial injections during LVAD support was found to be feasible and safe with the curved needle catheter.
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  • Månsson, K. N. T., et al. (författare)
  • Predicting long-term outcome of Internet-delivered cognitive behavior therapy for social anxiety disorder using fMRI and support vector machine learning
  • 2015
  • Ingår i: Translational Psychiatry. - 2158-3188 .- 2158-3188. ; 5
  • Tidskriftsartikel (refereegranskat)abstract
    • Cognitive behavior therapy (CBT) is an effective treatment for social anxiety disorder (SAD), but many patients do not respond sufficiently and a substantial proportion relapse after treatment has ended. Predicting an individual’s long-term clinical response therefore remains an important challenge. This study aimed at assessing neural predictors of long-term treatment outcome in participants with SAD 1 year after completion of Internet-delivered CBT (iCBT). Twenty-six participants diagnosed with SAD underwent iCBT including attention bias modification for a total of 13 weeks. Support vector machines (SVMs), a supervised pattern recognition method allowing predictions at the individual level, were trained to separate long-term treatment responders from nonresponders based on blood oxygen level-dependent (BOLD) responses to self-referential criticism. The Clinical Global Impression-Improvement scale was the main instrument to determine treatment response at the 1-year follow-up. Results showed that the proportion of long-term responders was 52%(12/23). From multivariate BOLD responses in the dorsal anterior cingulate cortex (dACC) together with the amygdala, we were able to predict long-term response rate of iCBT with an accuracy of 92% (confidence interval 95% 73.2–97.6). This activation pattern was, however, not predictive of improvement in the continuous Liebowitz Social Anxiety Scale—Self-report version. Follow-up psychophysiological interaction analyses revealed that lower dACC–amygdala coupling was associated with better long-term treatment response. Thus, BOLD response patterns in the fear-expressing dACC–amygdala regions were highly predictive of long-term treatment outcome of iCBT, and the initial coupling between these regions differentiated long-term responders from nonresponders. The SVM-neuroimaging approach could be of particular clinical value as it allows for accurate prediction of treatment outcome at the level of the individual.
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8.
  • Palma, Marzia, et al. (författare)
  • Ibrutinib induces rapid down-regulation of inflammatory markers and altered transcription of chronic lymphocytic leukaemia-related genes in blood and lymph nodes
  • 2018
  • Ingår i: British Journal of Haematology. - : WILEY. - 0007-1048 .- 1365-2141. ; 183:2, s. 212-224
  • Tidskriftsartikel (refereegranskat)abstract
    • In chronic lymphocytic leukaemia (CLL) patients, treatment with the Bruton tyrosine kinase inhibitor ibrutinib induces a rapid shift of tumour cells from lymph nodes (LN) to peripheral blood (PB). Here, we characterized in depth the dynamics of ibrutinib-induced inflammatory, transcriptional and cellular changes in different compartments immediately after treatment initiation in seven relapsed/refractory CLL patients. Serial PB and LN samples were taken before start and during the first 29 days of treatment. Changes in plasma inflammation-related biomarkers, CLL cell RNA expression, B-cell activation and migration markers expression, and PB mononuclear cell populations were assessed. A significant reduction of 10 plasma inflammation markers, the majority of which were chemokines and not CLL-derived, was observed within hours, and was paralleled by very early increase of CD19(+) circulating cells. At the RNA level, significant and continuous changes in transcription factors and signalling molecules linked to B-cell receptor signalling and CLL biology was observed in both PB and LN CLL cells already after 2 days of treatment. In conclusion, ibrutinib seems to instantly shut off an ongoing inflammatory response and interfere with diverse sensitive pathways in the LN.
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  • Shev, S, et al. (författare)
  • HCV genotypes in Swedish blood donors as correlated to epidemiology, liver disease and hepatitis C virus antibody profile
  • 1995
  • Ingår i: Infection. - : Urban & Vogel. - 1439-0973 .- 0300-8126. ; 23:5, s. 253-257
  • Tidskriftsartikel (refereegranskat)abstract
    • Sixty-two anti-HCV and HCV-RNA positive Swedish blood donors (44 men, 18 women; median age 34 years) were studied. HCV genotypes were correlated to parenteral risk factors, liver morphology, serum alanine aminotransferase (ALAT) levels and HCV antibody profile. Forty percent of the donors were infected with HCV genotype 1a, 10% with 1b, 21% with 2b, and 29% with 3a. Intravenous drug use (IVDU) was more common in donors with genotype 3a than in those with genotype 1a (p = 0.024), and prior blood transfusion more common in genotype 2b than in 3a (p = 0.012). Chronic active hepatitis with and without cirrhosis was found in 38% of donors infected with genotype 2b as compared to 8% of donors infected with 1a (p = 0.034). Forty percent of donors with genotype 1a had normal ALAT at the time of liver biopsy versus 11% with genotype 3a (p = 0.046). Antibodies to C33c and C22-3 were present in nearly all donors whereas reactivity to C100-3 and 5-1-1 was detected more often in donors with genotypes 1a and 1b as compared to donors with genotypes 2b and 3a. In conclusion, genotype 3a was correlated to IVDU or tattooing as parenteral risk factors for the acquisition of HCV infection, and genotype 2b to prior blood transfusion. Donors with genotypes 1a seemed to have less severe liver disease than those infected with genotypes 2b and 3a.
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