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Dive into the research topics where Hans Nåsell is active.

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Featured researches published by Hans Nåsell.


Annals of Surgery | 2008

Effects of a perioperative smoking cessation intervention on postoperative complications: a randomized trial.

David Lindström; Omid Sadr Azodi; Andreas Wladis; Hanne Tønnesen; Stefan Linder; Hans Nåsell; Sari Ponzer; Johanna Adami

Objective:To determine whether an intervention with smoking cessation starting 4 weeks before general and orthopedic surgery would reduce the frequency of postoperative complications. Summary Background Data:Complications are a major concern after elective surgery and smokers have an increased risk. There is insufficient evidence concerning how the duration of preoperative smoking intervention affects postoperative complications. Methods:A randomized controlled trial, conducted between February 2004 and December 2006 at 4 university-affiliated hospitals in the Stockholm region, Sweden. The outcome assessment was blinded. The follow-up period for the primary outcome was 30 days. Eligibility criteria were active daily smokers, aged 18 to 79 years. Of the 238 patients assessed, 76 refused participating, and 117 men and women undergoing surgery for primary hernia repair, laparoscopic cholecystectomy, or a hip or knee prosthesis were enrolled. Intervention:Smoking cessation therapy with individual counseling and nicotine substitution started 4 weeks before surgery and continued 4 weeks postoperatively. The control group received standard care. The main outcome measure was frequency of any postoperative complication. Results:An intention-to-treat analysis showed that the overall complication rate in the control group was 41%, and in the intervention group, it was 21% (P = 0.03). Relative risk reduction for the primary outcome of any postoperative complication was 49% and number needed to treat was 5 (95% CI, 3–40). An analysis per protocol showed that abstainers had fewer complications (15%) than those who continued to smoke or only reduced smoking (35%), although this difference was not statistically significant. Conclusion:Perioperative smoking cessation seems to be an effective tool to reduce postoperative complications even if it is introduced as late as 4 weeks before surgery.


Journal of Orthopaedic Trauma | 1999

Functional Outcome and quality of life in patients with Type B Ankle fractures : A two-year follow-up study

Sari Ponzer; Hans Nåsell; Bo Bergman; Hans Törnkvist

OBJECTIVES To compare a specific score designed for ankle fractures with a general quality-of-life instrument as an outcome measure, and to describe the two-year results for patients with Type B ankle fractures. DESIGN Follow-up study. SETTING Large teaching hospital, Sweden. PATIENTS Fifty-three patients, aged nineteen to sixty-three years, treated operatively for Type B ankle fractures. Forty-one patients completed the follow-up. MAIN OUTCOME MEASUREMENTS Olerud Molander Ankle Score (OMA score), Short Form-36 Health Survey (SF-36), and a visual analogue scale (VAS). RESULTS A significant correlation was found between the OMA score and SF-36 subscores for physical functioning, physical and emotional role function, social functioning, and bodily pain (p < 0.05). VAS for physical symptoms correlated with the OMA score and with all SF-36 subscores (p < 0.001). The mean OMA score was 84 (standard deviation = 22.5); 64 percent of patients scored 90 or more. Patients with an OMA score <90 more often had a B3-type fracture (p < 0.05) and more often considered themselves as not recovered compared with patients with an OMA score > or =90 (p < 0.001). Only thirteen patients (36 percent) reported a complete recovery. Sixteen patients (44 percent) had work-related problems and twenty-two (61 percent) had some problems with sport activities. The SF-36 subscores for physical functioning, physical and emotional role function, vitality, and mental health were lower compared with an average Swedish population (p < 0.05). CONCLUSIONS Our results suggest that the SF-36 Health Survey may be useful in measuring outcome after an ankle fracture, that disability, i.e., self-perceived limitations in everyday life, is common after B-type ankle fractures.


Journal of Bone and Joint Surgery, American Volume | 2010

Effect of smoking cessation intervention on results of acute fracture surgery: a randomized controlled trial.

Hans Nåsell; Johanna Adami; Eva Samnegård; Hanne Tønnesen; Sari Ponzer

BACKGROUND Tobacco smoking is a major health and economic concern and is also known to have a significant negative effect on surgical outcomes. The benefits of a smoking cessation intervention prior to elective orthopaedic surgery have been evaluated previously. Our aim was to assess whether a smoking cessation program, initiated during the acute hospitalization period and carried out for six weeks, could reduce the number of complications following emergency surgical treatment of fractures. METHODS In a multicenter, single-blinded, randomized, controlled clinical trial, 105 smokers with a fracture of the lower or upper extremity that needed acute surgical treatment were randomized to an intervention group (n = 50) or a control group (n = 55). The intervention group was offered a standardized smoking cessation program for six weeks, and all patients were followed at two to three weeks, four weeks, and six to twelve weeks. RESULTS The proportion of patients with at least one postoperative complication was significantly larger in the control group than it was in the intervention group (38% and 20%, respectively; p = 0.048). The development of two or more postoperative complications was also more common among the controls (p = 0.039). The rates of superficial wound infection, the most frequently recorded complication in both groups, were 20% and 8%, but this difference was not significant. A secondary analysis showed that the odds of having a complication were 2.51 times (95% confidence interval, 0.96 to 6.9 times) higher in the control group than in the intervention group, but this difference was not significant. CONCLUSIONS Our results indicate that a smoking cessation intervention program during the first six weeks after acute fracture surgery decreases the risk of postoperative complications.


Anaesthesia | 2009

The efficacy of a smoking cessation programme in patients undergoing elective surgery – a randomised clinical trial

O. Sadr Azodi; David Lindström; Johanna Adami; Hanne Tønnesen; Hans Nåsell; H. Gilljam; Andreas Wladis

It is known that smokers constitute an important risk group of patients undergoing surgery. It is unknown how smoking cessation intervention initiated 4 weeks prior to elective surgery affects the probability of permanent cessation. We randomly assigned 117 patients, scheduled to undergo elective orthopaedic and general surgery, to smoking cessation intervention and control group. The intervention group underwent a programme initiated, on average, 4 weeks prior to surgery with weekly meetings or telephone counselling and were provided with free nicotine replacement therapy (NRT). The control group received standard care. As a result, 20/55 (36%) patients the intervention group vs 1/62 (2%) in the control group became completely abstinent throughout the peri‐operative period (p < 0.001). After 1 year, those in the intervention group was most likely to be abstinent (18/55 (33%) vs 9/62 (15%) of the controls (p = 0.03). Level of nicotine dependence and obesity seemed to be a predictor of long‐term abstinence (p = 0.02).


Age and Ageing | 2014

Relationships between physical performance and knee and hip osteoarthritis: findings from the European Project on Osteoarthritis (EPOSA)

Mark H. Edwards; S. van der Pas; Michael D. Denkinger; Camille Parsons; Karen Jameson; Laura A. Schaap; Sabina Zambon; Maria Victoria Castell; Florian Herbolsheimer; Hans Nåsell; Mercedes Sánchez-Martínez; Ángel Otero; Thorsten Nikolaus; N.M. van Schoor; Nancy L. Pedersen; Stefania Maggi; Dorly J. H. Deeg; C Cooper; Elaine M. Dennison

BACKGROUND poor physical performance (PP) is known to be associated with disability, lower quality of life and higher mortality rates. Knee and hip osteoarthritis (OA) might be expected to contribute to poor PP, through joint pain and restricted range of movement. Both clinical and self-reported OA are often used for large-scale community and epidemiological studies. OBJECTIVE to examine the relationships between hip and knee OA and PP in a large data set comprising cohorts from six European countries. METHODS a total of 2,942 men and women aged 65-85 years from the Germany, Italy, Netherlands, Spain, Sweden and the UK were recruited. Assessment included an interview and clinical assessment for OA. PP was determined from walking speed, chair rises and balance (range 0-12); low PP was defined as a score of ≤9. RESULTS the mean (SD) age was 74.2 (5.1) years. Rates of self-reported OA were much higher than clinical OA. Advanced age, female gender, lower educational attainment, abstinence from alcohol and higher body mass index were independently associated with low PP. Clinical knee OA, hip OA or both were associated with a higher risk of low PP; OR (95% CI) 2.93 (2.36, 3.64), 3.79 (2.49, 5.76) and 7.22 (3.63, 14.38), respectively, with relationships robust to adjustment for the confounders above as well as pain. CONCLUSION lower limb OA at the hip and knee is associated with low PP, and for clinical diagnosis relationships are robust to adjustment for pain. Those at highest risk have clinical OA at both sites.


BMJ Open | 2017

The benefits of hardware removal in patients with pain or discomfort after fracture healing of the ankle: a systematic review protocol

Alexandra Thune; Mårten Hagelberg; Hans Nåsell; Olof Sköldenberg

Introduction For any orthopaedic surgeon working with trauma; ankle fractures are one of the most common injuries treated. The treatment of ankle fractures can be conservative, using external fixation, but more commonly the fractures are treated with open reduction and internal fixation. Residual pain and discomfort are common in patients after surgical treatment of fractures of the ankle. Sometimes it is difficult to determine whether the pain or discomfort is due to the implants left in situ or the primary injury itself. In many cases, the decision is made to remove the implants. Extraction of internal fixation material from the ankle is a common procedure in many orthopaedic clinics. There are no evidence-based guidelines or consensus regarding the effect of hardware removal from the ankle. The aim of this protocol is to describe the method that will be used to collect, describe and analyse the current evidence regarding hardware removal after fracture healing of the ankle. Methods and analysis We will conduct a systematic review of studies that were published after 1967 regarding the benefits of hardware removal in patients with pain or discomfort after fracture healing of the ankle. Study selection will follow the Preferred Reporting Items for Systematic Reviews and Meta-Analysis guidelines. We will make a predefined search strategy and use it in several databases. We will include both randomised controlled trials (RCTs) and non-RCT studies. We will use descriptive statistics to summarise the studies collected. If more than one RCT is collected then a meta-analysis will be conducted. The quality of evidence will be assessed using Grading of Recommendations Assessment, Development and Evaluation guidelines. Ethics and dissemination No ethics approval is required as no primary data will be collected. Once complete, the results will be made available by peer-reviewed publication. Trial registration number PROSPERO registration number CRD42016039186


Journal of Orthopaedic Trauma | 2011

The impact of smoking on complications after operatively treated ankle fractures--a follow-up study of 906 patients.

Hans Nåsell; Carin Ottosson; Hans Törnqvist; Johannes Lindé; Sari Ponzer


BMC Musculoskeletal Disorders | 2013

European project on osteoarthritis: design of a six-cohort study on the personal and societal burden of osteoarthritis in an older European population.

Suzan van der Pas; Maria Victoria Castell; C Cooper; Michael D. Denkinger; Elaine M. Dennison; Mark H. Edwards; Florian Herbolsheimer; Federica Limongi; Paul Lips; Stefania Maggi; Hans Nåsell; Thorsten Nikolaus; Ángel Otero; Nancy L. Pedersen; Richard Peter; Mercedes Sánchez-Martínez; Laura A. Schaap; Sabina Zambon; Natasja M. van Schoor; Dorly J. H. Deeg


Läkartidningen | 2004

Preoperative cessation of smoking seems to reduce the frequency of complications

David Lindström; Andreas Wladis; Stefan Linder; Hans Nåsell; Johanna Adami


BMC Musculoskeletal Disorders | 2015

HOPE-trial: hemiarthroplasty compared to total hip arthroplasty for displaced femoral neck fractures in the elderly-elderly, a randomized controlled trial

Olof Sköldenberg; Ghazi Chammout; Sebastian Mukka; Olle Muren; Hans Nåsell; Carl-Johan Hedbeck; Mats Salemyr

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C Cooper

Southampton General Hospital

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Mark H. Edwards

Southampton General Hospital

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Dorly J. H. Deeg

VU University Medical Center

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