| 1. |
- Hjalmarsson, Alfred, et al.
(författare)
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No obesity paradox in out-of-hospital cardiac arrest: Data from the Swedish registry of cardiopulmonary resuscitation.
- 2023
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Ingår i: Resuscitation plus. - 2666-5204. ; 15
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Tidskriftsartikel (refereegranskat)abstract
- Although an "obesity paradox", which states an increased chance of survival for patients with obesity after myocardial infarction has been proposed, it is less clear whether this phenomenon even exists in patients suffering out-of-hospital cardiac arrest (OHCA) and if diabetes, which is often associated with obesity, implies an additional risk.To investigate if and how obesity, with or without diabetes, affects the survival of patients with OHCA.This study included 55,483 patients with OHCA reported to the Swedish Registry of Cardiopulmonary Resuscitation between 2010 and 2020. Patients were classified in five groups: obesity only (Ob), type 1 diabetes only (T1D), type 2 diabetes only (T2D), obesity and any diabetes (ObD), or belonging to the group other (OTH). Patient characteristics and outcomes were studied using descriptive statistics, logistic, and Cox proportional regression.Obesity only was found in 2.7% of the study cohort, while 3.2% had obesity and any type of diabetes. Ob patients were significantly younger than all other patients (p≤0.001); the 30day-survival was 9.6% in Ob, and 10.6%, 7.3%, 6.9%, and 12.7% in T1D, T2D, ObD, and OTH, respectively, with OR (95% CI) of 0.69 (0.57-0.82), 0.78 (0.56-1.05), 0.65 (0.59-0.71), and 0.55 (0.45-0.66) for Ob, T1D, T2D, and ObD, respectively (reference group OTH). No time-related trends in 30-days survival were found.Obesity was present in 6% of the population and was associated with younger age and a 30% reduction in survival; a combination of obesity and diabetes further reduced the survival rate.
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| 2. |
- Höskuldsdóttir, Gudrun, et al.
(författare)
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Comparing effects of obesity treatment with very low energy diet and bariatric surgery after 2 years: a prospective cohort study
- 2022
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Ingår i: Bmj Open. - : BMJ. - 2044-6055. ; 12:4
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Tidskriftsartikel (refereegranskat)abstract
- Objectives To compare long-term effects and complications of medical treatment (MT) of obesity including very low energy diet with bariatric surgery. Design and setting This prospective study conducted in a clinical setting recruited individuals with body mass index (BMI) >= 35 kg/m(2) referred for obesity treatment. Demographic and anthropometric data, laboratory samples, and questionnaire replies were collected at baseline and 2 years. Participants and interventions 971 individuals were recruited 2015-2017. 382 received MT, 388 Roux-en-Y gastric bypass (RYGB) and 201 sleeve gastrectomy (SG). Main outcome measures Primary outcomes included changes in anthropometric measures, metabolic variables and safety. These were analysed using a linear regression model. A logistic regression model was used to analyse composite variables for treatment success (secondary outcomes). A random forest (RF) model was used to examine the importance of 15 clinical domains as predictors for successful treatment. Results Two-year data were available for 667 individuals (68.7%). Regarding primary outcomes, the decrease in excess BMI was 27.5%, 82.5% and 70.3% and proportion achieving a weight of >10% was 45.3%, 99.6% and 95.6% for MT, RYGB and SG, respectively (p<0.001). The groups were comparable regarding levels of vitamins, minerals and haemoglobin or safety measures. Likelihood for success (secondary outcome) was higher in the surgical groups (RYGB: OR 5.3 (95% CI 3.9 to 7.2) vs SG: OR 4.3 ((95% CI 3.0 to 6.2)) in reference to MT. Baseline anthropometry had the strongest predictive value for treatment success, according to the RF model. Conclusions In clinical practice, bariatric surgery by RYGB or SG is most effective, but meaningful weight loss is achievable by MT with strict caloric restriction and stepwise introduction of a normal diet. All treatments showed positive effects on well-being, cardiovascular risk factors, and levels of vitamins and minerals at 2-year follow-up and groups were similar regarding safety measures.
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| 3. |
- Höskuldsdóttir, Gudrun, et al.
(författare)
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Design and baseline data in the BAriatic surgery SUbstitution and Nutrition study (BASUN): a 10-year prospective cohort study
- 2020
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Ingår i: BMC Endocrine Disorders. - : Springer Science and Business Media LLC. - 1472-6823. ; 20:1
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Tidskriftsartikel (refereegranskat)abstract
- Background There is still a lack of knowledge on long-term effects of surgical and non-surgical weight-lowering treatments. BASUN is a prospective study with 10 years of follow-up that will observe the effects and consequences of surgical and medical treatment of obesity. The aims are to cover areas where data on long-term outcomes are lacking, e.g., nutritional deficiencies, substance abuse, psychiatric health, as well as patient-reported outcomes. Methods BASUN is a cohort study that recruited study persons with obesity (BMI >= 35 kg/m(2)) referred to the Regional Obesity Centre of Region Vastra Gotaland. The interventions were Roux-en-Y gastric bypass (RYGB) or Sleeve gastrectomy (SG), or 12 months of structured, multi-professional medical treatment (MT), including very low energy diet, followed by diet and pharmaceutical treatment. The study is not randomized, but based on patients preferences and multidisciplinary assessments. The study persons are examined at baseline, 2, 5, and 10 years with blood tests, measurements and questionnaires. The recruitment period lasted from May 2015 to November 2017. Results One thousand one hundred twenty-seven patients were included (74% female). Three hundred eighty-two patients were accepted for medical treatment, 589 for surgical treatment (388 RYGB and 201 SG) and 156 patients left the study without treatment, leaving a final study population of 971 patients. There were slight differences between the treatment groups with regards to age and BMI. Pharmaceutical treatments, level of education, smoking and marital status were not significantly different between the groups. Conclusion This study will follow 971 obese subjects in clinical practice treated with the best surgical or medical methods currently available. It has the potential to evaluate outcomes usually not reported in short-term studies, and to assist in identifying factors that are of importance for the choices of treatment. The main limitations are non-randomization and differences in baseline characteristics. The large number of participants and the length of the prospective follow-up are major strengths of the study. BASUN is designed to identify both early and late benefits and adverse events of treatment of obesity.
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| 4. |
- Höskuldsdóttir, Gudrun
(författare)
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On the effects of obesity treatment
- 2021
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Aim: In this thesis the effects of bariatric surgery in individuals with type 1 diabetes (T1D) will be assessed as well as the effects of surgery on risk for heart failure (HF) and atrial fibrillation (AF) in individuals with type 2 diabetes (T2D). Intensive medical treatment of obesity will be compared with the most common surgical methods and factors predicting obesity and treatment outcomes evaluated. Methods: Study I included effects of Roux-en-Y gastric bypass (RYGB) on cardiovascular outcomes, mortality, serious hypo- and hyperglycemia, substance abuse, psychiatric health, kidney function and amputation in individuals with T1D and obesity. In study II the effects of RYGB on the incidence of HF and AF in individuals with T2D and obesity was evaluated as well as effects on mortality in individuals with preexisting HF. COX proportional hazards regressions were applied. Studies III-V included individuals from the BASUN study that received non-surgical treatment of obesity or surgical treatment with RYGB or sleeve gastrectomy. Study III includes a description the population at baseline. In study IV, machine learning algorithms were used to rank individual variables and variable domains with regard to predictive value on BMI. Study V describes the results from the three treatments at two-year follow-up. Outcomes included were changes in anthropometric measures and metabolic parameters (analyzed using linear regression models) and composite variables for successful and unsuccessful treatment (analyzed using a logistic regression model). Clinical variables were divided into domains and their impact in predicting treatment success was computed using conditional random forest with conditional permutation. Results: We found that RYGB reduced risk for cardiovascular disease and mortality in individuals with T1D and obesity but increased risk for serious hyperglycemic events and substance abuse. Surgically treated individuals with T2D and obesity that underwent RYGB had significantly lower risk for hospitalization for AF and HF in comparison with those that did not undergo surgery. Lower mortality was observed in individuals with known HF that had undergone surgery. Domains including socioeconomic status, age, sex, lifestyle and habits as well as potential anxiety and depression were shown to have strong predictive value on BMI levels. Bariatric surgery is more effective than medical treatment of obesity, although medical treatment was also shown to be effective. There was no difference in safety measures between the treatment groups. Domains including anthropometry at baseline, metabolic disease, lifestyle and habits and socioeconomic status had predictive value on treatment success and domains including mental well-being and psychiatric disorders were also important in success of the different treatment options. Conclusion: Bariatric surgery may be considered in individuals with T1D after consideration of risk for serious hypo- and hyperglycemia. This treatment option is effective in individuals with T2D and obesity to reduce risk for HF and AF and may even be considered in a selected population of individuals with known HF. Mental well-being and not only diagnosed psychiatric disorders could be an important factor in the treatment and follow- up with individuals with obesity. Although surgical treatment of obesity is more effective with regard to weight loss, medical treatment can also lead to meaningful weight loss. Deficiencies of vitamins and minerals or complications of treatment are not necessarily more common after bariatric surgery given good compliance to supplementary treatment and careful choice of treatment option.
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| 5. |
- Höskuldsdóttir, Gudrun, et al.
(författare)
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Potential Benefits and Harms of Gastric Bypass Surgery in Obese Individuals With Type 1 Diabetes : A Nationwide, Matched, Observational Cohort Study
- 2020
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Ingår i: Diabetes Care. - : American Diabetes Association. - 0149-5992 .- 1935-5548. ; 43:12, s. 3079-3085
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVE: To study the potential long-term benefits and possible complications of bariatric surgery in patients with type 1 diabetes (T1D).RESEARCH DESIGN AND METHODS: In this register-based nationwide cohort study, we compared individuals with T1D and obesity who underwent Roux-en-Y gastric bypass (RYGB) surgery with patients with T1D and obesity matched for age, sex, BMI, and calendar time that did not undergo surgery. By linking the Swedish National Diabetes Register and Scandinavian Obesity Surgery Registry study individuals were included between 2007 and 2013. Outcomes examined included all-cause mortality, cardiovascular disease, stroke, heart failure, and hospitalization for serious hypo- or hyperglycemic events, amputation, psychiatric disorders, changes in kidney function, and substance abuse.RESULTS: We identified 387 individuals who had undergone RYGB and 387 control patients. Follow-up for hospitalization was up to 9 years. Analysis showed lower risk for cardiovascular disease (hazard ratio [HR] 0.43; 95% CI 0.20-0.9), cardiovascular death (HR 0.15; 95% CI 0.03-0.68), hospitalization for heart failure (HR 0.32; 95% CI 0.15-0.67) and stroke (HR 0.18; 95% CI 0.04-0.82) for the RYGB group. There was a higher risk for serious hyperglycemic events (HR 1.99; 95% CI 1.07-3.72) and substance abuse (HR 3.71; 95% CI 1.03-3.29) after surgery.CONCLUSIONS: This observational study suggests bariatric surgery may yield similar benefits on risk for cardiovascular outcomes and mortality in patients with T1D and obesity as for patients with type 2 diabetes. However, some potential serious adverse effects suggest need for careful monitoring of such patients after surgery.
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| 6. |
- Höskuldsdóttir, Gudrún, et al.
(författare)
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Potential Effects of Bariatric Surgery on the Incidence of Heart Failure and Atrial Fibrillation in Patients With Type 2 Diabetes Mellitus and Obesity and on Mortality in Patients With Preexisting Heart Failure : A Nationwide, Matched, Observational Cohort Study
- 2021
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Ingår i: Journal of the American Heart Association. - : Wiley-Blackwell Publishing Inc.. - 2047-9980. ; 10:7
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Tidskriftsartikel (refereegranskat)abstract
- Background: Obesity and diabetes mellitus are strongly associated with heart failure (HF) and atrial fibrillation (AF). The benefits of bariatric surgery on cardiovascular outcomes are known in people with or without diabetes mellitus. Surgical treatment of obesity might also reduce the incidence of HF and AF in individuals with obesity and type 2 diabetes mellitus (T2DM).Methods and Results: In this register-based nationwide cohort study we compared individuals with T2DM and obesity who underwent Roux-en-Y gastric bypass surgery with matched individuals not treated with surgery. The main outcome measures were hospitalization for HF and/or AF and mortality in patients with preexisting HF. We identified 5321 individuals with T2DM and obesity who had undergone Roux-en-Y gastric bypass surgery between January 2007 and December 2013 and 5321 matched controls. The individuals included were 18 to 65 years old and had a body mass index >27.5 kg/m2. The follow-up time for hospitalization was until the end of 2015 (mean 4.5 years) and the end of 2016 for death. Our results show a 73% lower risk for HF (hazard ratio [HR], 0.27; CI, 0.19-0.38), 41% for AF (HR, 0.59; CI, 0.44-0.78), and 77% for concomitant AF and HF (HR, 0.23; CI, 0.12-0.46) in the surgically treated group. In patients with preexisting HF we observed significantly lower mortality in the group who underwent surgery (HR, 0.23; 95% CI, 0.12-0.43).Conclusion:s Bariatric surgery may reduce risk for HF and AF in patients with T2DM and obesity, speculatively via positive cardiovascular and renal effects. Obesity treatment with surgery may also be a valuable alternative in selected patients with T2DM and HF.
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| 7. |
- Höskuldsdóttir, Gudrun, et al.
(författare)
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Potential Effects of Bariatric Surgery on the Incidence of Heart Failure and Atrial Fibrillation in Patients With Type 2 Diabetes Mellitus and Obesity and on Mortality in Patients With Preexisting Heart Failure: A Nationwide, Matched, Observational Cohort Study
- 2021
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Ingår i: Journal of the American Heart Association. - : Ovid Technologies (Wolters Kluwer Health). - 2047-9980. ; 10:7
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Tidskriftsartikel (refereegranskat)abstract
- Background Obesity and diabetes mellitus are strongly associated with heart failure (HF) and atrial fibrillation (AF). The benefits of bariatric surgery on cardiovascular outcomes are known in people with or without diabetes mellitus. Surgical treatment of obesity might also reduce the incidence of HF and AF in individuals with obesity and type 2 diabetes mellitus (T2DM). Methods and Results In this register-based nationwide cohort study we compared individuals with T2DM and obesity who underwent Roux-en-Y gastric bypass surgery with matched individuals not treated with surgery. The main outcome measures were hospitalization for HF and/or AF and mortality in patients with preexisting HF. We identified 5321 individuals with T2DM and obesity who had undergone Roux-en-Y gastric bypass surgery between January 2007 and December 2013 and 5321 matched controls. The individuals included were 18 to 65 years old and had a body mass index >27.5 kg/m(2). The follow-up time for hospitalization was until the end of 2015 (mean 4.5 years) and the end of 2016 for death. Our results show a 73% lower risk for HF (hazard ratio [HR], 0.27; CI, 0.19-0.38), 41% for AF (HR, 0.59; CI, 0.44-0.78), and 77% for concomitant AF and HF (HR, 0.23; CI, 0.12-0.46) in the surgically treated group. In patients with preexisting HF we observed significantly lower mortality in the group who underwent surgery (HR, 0.23; 95% CI, 0.12-0.43). Conclusions Bariatric surgery may reduce risk for HF and AF in patients with T2DM and obesity, speculatively via positive cardiovascular and renal effects. Obesity treatment with surgery may also be a valuable alternative in selected patients with T2DM and HF.
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| 8. |
- Höskuldsdóttir, Gudrun, et al.
(författare)
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Risk trajectories of complications in over one thousand newly diagnosed individuals with type 2 diabetes
- 2022
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Ingår i: Scientific Reports. - : Springer Science and Business Media LLC. - 2045-2322. ; 12:1
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Tidskriftsartikel (refereegranskat)abstract
- Although the increased risk of complications of type 2 diabetes (T2D) is well known, there is still little information about the long-term development of comorbidities in relation to risk factors. The purpose of the present study was to describe the risk trajectories of T2D complications over time in an observational cohort of newly diagnosed T2D patients, as well as to evaluate the effect of common risk factors on the development of comorbidities. This national cohort study investigated individuals with T2D in the Swedish National Diabetes Register regarding prevalence of comorbidities at the time of diagnosis, and the incidence of cardiovascular disease (CVD), chronic kidney disease (CKD) and heart failure in the entire patient cohort and stratified by HbA1c levels and age at baseline. Multivariable Cox regressions were used to evaluate risk factors predicting outcomes. We included 100,878 individuals newly diagnosed with T2D between 1998 and 2012 in the study, with mean 5.5 years follow-up (max 17 years). The mean age at diagnosis was 62.6 +/- SD12.5 years and 42.7% of the patients were women. Prevalent CVD was reported for 17.5% at baseline. Although the prevalence of comorbidities was generally low for individuals 50 years or younger at diagnosis, the cumulative incidence of the investigated comorbidities increased over time. Newly diagnosed CVD was the most common comorbidity. Women were shown to have a lower risk of developing comorbid conditions than men. When following the risk trajectory of comorbidities over a period of up to 15 years in individuals with type 2 diabetes, we found that all comorbidities gradually increased over time. There was no distinct time point when onset suddenly increased.
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| 9. |
- Höskuldsdóttir, Gudrun, et al.
(författare)
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The BAriatic surgery SUbstitution and nutrition (BASUN) population: a data-driven exploration of predictors for obesity
- 2021
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Ingår i: Bmc Endocrine Disorders. - : Springer Science and Business Media LLC. - 1472-6823. ; 21:1
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Tidskriftsartikel (refereegranskat)abstract
- Background: The development of obesity is most likely due to a combination of biological and environmental factors some of which might still be unidentified. We used a machine learning technique to examine the relative importance of more than 100 clinical variables as predictors for BMI. Methods: BASUN is a prospective non-randomized cohort study of 971 individuals that received medical or surgical treatment (treatment choice was based on patient's preferences and clinical criteria, not randomization) for obesity in the Vastra Gotaland county in Sweden between 2015 and 2017 with planned follow-up for 10 years. This study includes demographic data, BMI, blood tests, and questionnaires before obesity treatment that cover three main areas: gastrointestinal symptoms and eating habits, physical activity and quality of life, and psychological health. We used random forest, with conditional variable importance, to study the relative importance of roughly 100 predictors of BMI, covering 15 domains. We quantified the predictive value of each individual predictor, as well as each domain. Results: The participants received medical (n = 382) or surgical treatment for obesity (Roux-en-Y gastric bypass, n = 388; sleeve gastrectomy, n = 201). There were minor differences between these groups before treatment with regard to anthropometrics, laboratory measures and results from questionnaires. The 10 individual variables with the strongest predictive value, in order of decreasing strength, were country of birth, marital status, sex, calcium levels, age, levels of TSH and HbA1c, AUDIT score, BE tendencies according to QEWPR, and TG levels. The strongest domains predicting BMI were: Socioeconomic status, Demographics, Biomarkers (notably TSH), Lifestyle/habits, Biomarkers for cardiovascular disease and diabetes, and Potential anxiety and depression. Conclusions: Lifestyle, habits, age, sex and socioeconomic status are some of the strongest predictors for BMI levels. Potential anxiety and / or depression and other characteristics captured using questionnaires have strong predictive value. These results confirm previously suggested associations and advocate prospective studies to examine the value of better characterization of patients eligible for obesity treatment, and consequently to evaluate the treatment effects in groups of patients.
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| 10. |
- Mejaddam, Ala, et al.
(författare)
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Comorbidity and quality of life in obesity–a comparative study with the general population in Gothenburg, Sweden
- 2022
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Ingår i: PLoS ONE. - : Public Library of Science (PLoS). - 1932-6203. ; 17:10
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Tidskriftsartikel (refereegranskat)abstract
- Context Obesity is considered to have a detrimental impact on health-related quality of life (HRQoL). Objective To compare HRQoL in a well-defined group of people with obesity with a population-based control group from the general public. Design Observational cross-sectional cohort study with a reference population. Setting The Regional Obesity Center at the Department of Medicine at Sahlgrenska University Hospital, Gothenburg, Sweden. Participants People with obesity (n = 1122) eligible for surgical and non-surgical obesity treatment in routine care were included consecutively between 2015 and 2017 into the BASUN study. Men and women from the WHO-MONICA-GOT project were used as a reference population (n = 414). Main outcome measures HRQoL was measured with the RAND-36/Short Form-36 questionnaire (SF-36) and a Visual Analogue Scale (VAS) for self-related health (SRH). Prescription drugs for hypertension, diabetes mellitus, depression, and anxiety were taken as a proxy for these conditions. Results People with obesity rated their overall HRQoL lower than the reference population according to the SRH-VAS. Lower scores were reported on physical and social functioning, vitality, general and mental health after adjustment for age and use of prescription drugs (considered a proxy for burden of disease, or comorbidities) using the RAND-36/SF-36 questionnaire. Use of some psychopharmacological agents was more common in patients with obesity. Conclusion People with obesity seeking help with weight reduction are more likely to have lower physical and mental self-reported HRQoL than the general population.
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