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Sökning: WFRF:(Ragnarsson Oskar)

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61.
  • Jakobsson, Hugo, et al. (författare)
  • Adrenal venous sampling: The learning curve of a single interventionalist with 282 consecutive procedures
  • 2018
  • Ingår i: Diagnostic and Interventional Radiology. - : Galenos Yayinevi. - 1305-3825 .- 1305-3612. ; 24:2, s. 89-93
  • Tidskriftsartikel (refereegranskat)abstract
    • PURPOSE Primary aldosteronism (PA) is a common cause of secondary hypertension. Adrenal venous sampling (AVS) is the gold standard for assessing laterality of PA, which is of paramount importance to decide adequate treatment. AVS is a technically complicated procedure with success rates ranging between 30% and 96%. The aim of this study was to investigate the success rate of AVS over time, performed by a single interventionalist. METHODS This was a retrospective study based on consecutive AVS procedures performed by a single operator between September 2005 and June 2016. Data on serum concentrations of aldosterone and cortisol from right and left adrenal vein, inferior vena cava, and peripheral vein were collected and selectivity index (SI) calculated. Successful AVS was defined as SI >5. RESULTS In total, 282 AVS procedures were performed on 269 patients, 168 men (62%) and 101 women (38%), with a mean age of 55±11 years (range, 26–78 years). Out of 282 AVS procedures, 259 were successful, giving an overall success rate of 92%. The most common reason for failure was inability to localize the right adrenal vein (n=16; 76%). The success rates were 63%, 82%, and 94% during the first, second, and third years, respectively. During the last 8 years the success rate was 95%, and on average 27 procedures were performed annually. CONCLUSION Satisfactory AVS success rate was achieved after approximately 36 procedures and satisfactory success rate was maintained by performing approximately 27 procedures annually. AVS should be limited to few operators that perform sufficiently large number of procedures to achieve, and maintain, satisfactory AVS success rate. © Turkish Society of Radiology 2018.
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62.
  • Jakobsson, Sofie, 1968, et al. (författare)
  • Extended Support Within a Person-Centered Practice After Surgery for Patients With Pituitary Tumors: Protocol for a Quasiexperimental Study.
  • 2020
  • Ingår i: JMIR research protocols. - : JMIR Publications Inc.. - 1929-0748. ; 9:7
  • Tidskriftsartikel (refereegranskat)abstract
    • Patients with pituitary tumors often live with lifelong consequences of their disease. Treatment options include surgery, radiotherapy, and medical therapy. Symptoms associated with the tumor or its treatment affect several areas of life. Patients need to adhere to long-term contact with both specialist and general health care providers due to the disease, complex treatments, and associated morbidity. The first year after pituitary surgery constitutes an important time period, with medical evaluations after surgery and decisions on hormonal substitution. The development and evaluation of extended patient support during this time are limited.The aim of this study is to evaluate whether support within a person-centered care practice increases wellbeing for patients with pituitary tumors. Our main hypothesis is that the extended support will result in increased psychological wellbeing compared with the support given within standard of care. Secondary objectives are to evaluate whether the extended support, compared with standard care, will result in (1) better health status, (2) less fatigue, (3) higher satisfaction with care, (4) higher self-efficacy, (5) increased person-centered content in care documentation, and (6) sustained patient safety.Within a quasiexperimental design, patients diagnosed with a pituitary tumor planned for neurosurgery are consecutively included in a pretest-posttest study performed at a specialist endocrine clinic. The control group receives standard of care after surgery, and the interventional group receives structured patient support for 1 year after surgery based on person-centeredness covering self-management support, accessibility, and continuity. A total of 90 patients are targeted for each group.Recruitment into the control group was performed between Q3 2015 and Q4 2017. Recruitment into the intervention group started in Q4 2017 and is ongoing until Q4 2020. The study is conducted according to the Declaration of Helsinki, and the protocol has received approval from a regional ethical review board.This study entails an extensive intervention constructed in collaboration between clinicians, patients, and researchers that acknowledges accessibility, continuity, and self-management support within person-centeredness. The study has the potential to compare standard care to person-centered practice adapted specifically for patients with pituitary tumors and evaluated with a combination of patient-reported outcomes and patient-reported experience measures. Following the results, the person-centered practice may also become a useful model to further develop and explore person-centered care for patients with other rare, lifelong conditions.Researchweb.org. https://www.researchweb.org/is/sverige/project/161671.DERR1-10.2196/17697.
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63.
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64.
  • Jakobsson Ung, Eva, 1960, et al. (författare)
  • The pre- and postoperative illness trajectory in patients with pituitary tumours.
  • 2019
  • Ingår i: Endocrine connections. - 2049-3614. ; 8:7, s. 878-886
  • Tidskriftsartikel (refereegranskat)abstract
    • Experiences and need of support during surgery and start of replacement therapy in patients with pituitary tumours are highly unknown. This study therefore aimed at exploring patient experiences during pre- and postoperative care and recovery after pituitary surgery in patients with a pituitary tumour.Within a qualitative study design, 16 consecutive patients who underwent surgery for pituitary tumours were repeatedly interviewed. In total 42 interviews were performed before and after surgery. Analysis was performed using qualitative interpretation.Suffering a pituitary tumour was overwhelming for many patients and struggling with existential issues was common. Patients expressed loneliness and vulnerability before and after surgery. How professionals handled information in connection with diagnosis greatly affected the patients. Other patients with the same diagnosis were experienced as the greatest support. Normalisation of bodily symptoms and relationships with others were reported during postoperative recovery. However, a fear that the tumour would return was present.Patients with pituitary tumours need structured support, including peer support, which acknowledges physical, cognitive as well as emotional and existential concerns. Information related to diagnosis and surgery should be adapted in relation to the loneliness and the existential seriousness of the situation. Care and support for patients with pituitary tumours should preferably be organised based on continuity and an unbroken care pathway from the first pre-operative evaluation through to post-operative care and the start of a life-long endocrine treatment and tumour surveillance.
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65.
  • Johannsson, Gudmundur, 1960, et al. (författare)
  • Cardiovascular and metabolic impact of glucocorticoid replacement therapy.
  • 2014
  • Ingår i: Frontiers of hormone research. - : S. Karger AG. - 1662-3762. ; 43, s. 33-44
  • Tidskriftsartikel (refereegranskat)abstract
    • Cortisol in man is essential for life. Excess cortisol as in Cushing's syndrome and during pharmacological glucocorticoid (GC) therapy is associated with increased cardiovascular morbidity and mortality. Recent data from patients with adrenal insufficiency (AI) have demonstrated that currently used replacement regimens are associated with a poor cardiovascular outcome. In particular, a more than doubled vascular mortality rate has been observed in patients with primary AI. The unphysiological GC replacement, both in terms of the total daily dose and the pattern of delivery, may explain this poor outcome together with an inadequate treatment during an intercurrent illness. The mechanism may be both an induction of classical metabolic risk factors for vascular disease, such as obesity and hypertension, but also an unphysiological cortisol exposure to the vascular endothelium and the immune system that may induce an accelerated atherosclerotic process. This review summarizes some of the cardiovascular data associated with GC excess and outcome data in patients with AI. Studies that have compared various regimens for replacement therapy will be addressed and recent developments that may improve outcome in patients with AI will be discussed.
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66.
  • Johannsson, Gudmundur, 1960, et al. (författare)
  • Growth hormone deficiency in adults with hypopituitarism-What are the risks and can they be eliminated by therapy?
  • 2021
  • Ingår i: Journal of Internal Medicine. - : Wiley. - 0954-6820 .- 1365-2796. ; 290:6, s. 1180-1193
  • Tidskriftsartikel (refereegranskat)abstract
    • Growth hormone (GH) deficiency develops early in patients with hypothalamic-pituitary disorders and is therefore common among these patients. GH deficiency in adults is associated with increased morbidity, increased body fat mass, abdominal obesity, dyslipidaemia, reduced exercise capacity, impaired cardiac function as well as reduced self-reported well-being and impaired quality of life. Since recombinant human GH became available as replacement therapy more than 25 years ago, randomised controlled trials and long-term studies, together with meta-analyses, have shown improved outcomes in adult hypopituitary patients receiving GH. Many of the features associated with GH deficiency in adults improve, or even normalizes, and the safety profile is reassuring. The increased interest in GH deficiency in adults with hypothalamic-pituitary disorders has also contributed to the identification of others factors of importance for an outcome such as the replacement of other pituitary hormone deficiencies, and the management of the underlying hypothalamic-pituitary disease, most commonly a pituitary tumour. In this narrative review, we summarize the burden of GH deficiency in adults with hypopituitarism, the impact of GH replacement on the outcome, as well as safety. Based on currently available data, GH replacement should be considered routine management of adults with hypopituitarism.
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67.
  • Johannsson, Gudmundur, 1960, et al. (författare)
  • Improved cortisol exposure-time profile and outcome in patients with adrenal insufficiency : a prospective randomised trial of a novel hydrocortisone dual-release formulation
  • 2012
  • Ingår i: Journal of Clinical Endocrinology and Metabolism. - : The Endocrine Society. - 0021-972X .- 1945-7197. ; 97:2, s. 473-481
  • Tidskriftsartikel (refereegranskat)abstract
    • Context: Patients with treated adrenal insufficiency (AI) have increased morbidity and mortality rate. Our goal was to improve outcome by developing a once-daily (OD) oral hydrocortisone dual-release tablet with a more physiological exposure-time cortisol profile.Objective: The aim was to compare pharmacokinetics and metabolic outcome between OD and the same daily dose of thrice-daily (TID) dose of conventional hydrocortisone tablets.Design and Setting: We conducted an open, randomized, two-period, 12-wk crossover multicenter trial with a 24-wk extension at five university hospital centers.Patients: The trial enrolled 64 adults with primary AI; 11 had concomitant diabetes mellitus (DM).Intervention: The same daily dose of hydrocortisone was administered as OD dual-release or TID.Main Outcome Measure: We evaluated cortisol pharmacokinetics.Results: Compared with conventional TID, OD provided a sustained serum cortisol profile 0-4 h after the morning intake and reduced the late afternoon and the 24-h cortisol exposure. The mean weight (difference = -0.7 kg, P = 0.005), systolic blood pressure (difference = -5.5 mm Hg, P = 0.0001) and diastolic blood pressure (difference: -2.3 mm Hg; P = 0.03), and glycated hemoglobin (absolute difference = -0.1%, P = 0.0006) were all reduced after OD compared with TID at 12 wk. Compared with TID, a reduction in glycated hemoglobin by 0.6% was observed in patients with concomitant DM during OD (P = 0.004).Conclusion: The OD dual-release tablet provided a more circadian-based serum cortisol profile. Reduced body weight, reduced blood pressure, and improved glucose metabolism were observed during OD treatment. In particular, glucose metabolism improved in patients with concomitant DM.
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68.
  • Kobayashi, Hiroki, et al. (författare)
  • Assessing Lateralization Index of Adrenal Venous Sampling for Surgical Indication in Primary Aldosteronism
  • 2024
  • Ingår i: JOURNAL OF CLINICAL ENDOCRINOLOGY & METABOLISM. - 0021-972X .- 1945-7197.
  • Tidskriftsartikel (refereegranskat)abstract
    • Context Clinical practice guidelines recommend the lateralization index (LI) as the standard for determining surgical eligibility in primary aldosteronism (PA).Objective Our goal was to identify the optimal LI cutoffs in adrenal venous sampling (AVS) for diagnosing PA that is amenable to surgical cure.Methods We conducted a retrospective international cohort study across 16 institutions in 11 countries, including 1550 patients with PA who underwent AVS, with and/or without adrenocorticotropin (ACTH) stimulation. The establishment of optimal cutoffs was informed by a survey of 82 patients with PA in Japan, aimed at determining the LI cutoff aligned with patient expectations for a surgical cure rate.Results The survey revealed that a median cure rate expectation of 80% would motivate patients with PA towards undergoing adrenalectomy. The optimal LI cutoffs achieving an adjusted positive predictive value (PPV) of 80% were identified as 3.8 for unstimulated AVS and 3.4 for ACTH-stimulated AVS. Furthermore, a contralateral ratio of less than 0.4 and the detection of an adrenal nodule on computed tomography imaging were identified as independent predictors of surgically curable PA. Incorporating these factors with the optimal LI cutoffs, the adjusted PPV increased to 96.6% for unstimulated AVS and 89.6% for ACTH-stimulated AVS. No clear differences in predictive ability between unstimulated and ACTH-stimulated LI were found.Conclusion The present study clarified the optimal LI cutoffs for without and with ACTH stimulation. The presence of contralateral suppression and adrenal nodule on CT imaging seems to provide additional available information besides LI for surgical indication.
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69.
  • Kousoula, Konstantina, et al. (författare)
  • The impact of adjustments to the diagnostic criteria for biochemical remission in surgically treated patients with acromegaly
  • 2017
  • Ingår i: Growth Hormone and IGF Research. - : Elsevier BV. - 1096-6374. ; 36, s. 16-21
  • Tidskriftsartikel (refereegranskat)abstract
    • Background The suggested criteria for biochemical remission in patients treated for acromegaly were recently modified. The aim of this project was to study to what extent this modification influences remission rates. Design, patients and methods This was a retrospective study of 55 consecutive patients [29 men; median age 47 years (interquartile range 38–68)] diagnosed with acromegaly between 2003 and 2014. After treatment serum IGF-I and/or GH was measured according to a standardized protocol. The biochemical remission status was defined according to the clinical guidelines from 2010 and2014. Results Out of 55 patients, 44 patients were primarily operated. Of these, 33 (75%) were evaluated 3–12 months postoperatively by measuring serum IGF-I and GH during an oral glucose tolerance test. According to the 2010 guidelines, 11 patients (33%) were in biochemical remission, 15 patients (46%) were not and 7 patients (21%) had discordant results (normal IGF-I and high GH or vice versa). Applying the 2014 guidelines in the same group, 16 patients (49%) were in biochemical remission, 7 patients (21%) were not and 10 patients (30%) had discordant results. Thus, by using the most recent criteria for biochemical control, more patients were considered to be in remission, or with discordant results, and fewer patients not in remission (P < 0.05). Conclusion An apparently minor adjustment of the criteria for biochemical control has a significant impact on remission status in patients treated for acromegaly, eventually affecting follow-up and treatment strategies. © 2017 Elsevier Ltd
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70.
  • Muth, Andreas, 1974, et al. (författare)
  • Systematic review of surgery and outcomes in patients with primary aldosteronism.
  • 2015
  • Ingår i: The British journal of surgery. - : Oxford University Press (OUP). - 1365-2168 .- 0007-1323. ; 102:4, s. 307-17
  • Tidskriftsartikel (refereegranskat)abstract
    • Primary aldosteronism (PA) is the most common cause of secondary hypertension. The main aims of this paper were to review outcome after surgical versus medical treatment of PA and partial versus total adrenalectomy in patients with PA.
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