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Troëng, Thomas
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Publications (10 of 14) Show all publications
Hoffner, M., Ohlin, K., Svensson, B., Manjer, J., Hansson, E., Troëng, T. & Brorson, H. (2018). Liposuction Gives Complete Reduction of Arm Lymphedema following Breast Cancer Treatment: A 5-year Prospective Study in 105 Patients without Recurrence. Plastic and reconstructive surgery (1963), 6(8), Article ID e1912.
Open this publication in new window or tab >>Liposuction Gives Complete Reduction of Arm Lymphedema following Breast Cancer Treatment: A 5-year Prospective Study in 105 Patients without Recurrence
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2018 (English)In: Plastic and reconstructive surgery (1963), ISSN 0032-1052, E-ISSN 1529-4242, Vol. 6, no 8, article id e1912Article in journal (Refereed) Published
Abstract [en]

Background: Arm lymphedema is a well-recognized complication after breast cancer surgery that negatively impacts patients' quality of life, both physiologically and psychologically. Lymph stasis and inflammation result in excess formation of adipose tissue, which makes removal of the deposited subcutaneous fat necessary to eliminate the excess volume. Liposuction, combined with postoperative controlled compression therapy (CCT), is the only treatment that gives complete reduction of the excess volume. The aim of this study was to evaluate the 5-year results after liposuction in combination with CCT. Methods: Patients consecutively operated on between 1993 and 2012 were identified from the lymphedema registry, comprising all patients with nonpitting lymphedema treated with liposuction and CCT in our department. Standardized forms were used to collect pre-, peri-, and postoperative data. Results: One hundred five women with nonpitting edema were treated. The mean interval between the breast cancer operation and lymphedema start was 2.95.0 years, the mean duration of lymphedema was 10 +/- 7.4 years, and the preoperative mean excess volume was 1,573 +/- 645ml. The mean volume aspirated was 1,831 +/- 599ml. Postoperative mean reduction 5 years postoperatively was 117% +/- 26% as compared with the healthy arm. Conclusion: Liposuction is an effective method for the treatment of chronic, nonpitting, arm lymphedema resistant to conservative treatment. The volume reduction remains complete after 5 years.

Place, publisher, year, edition, pages
LIPPINCOTT WILLIAMS & WILKINS, 2018
National Category
Surgery
Identifiers
urn:nbn:se:uu:diva-365984 (URN)10.1097/GOX.0000000000001912 (DOI)000444969900036 ()30324078 (PubMedID)
Funder
Swedish Cancer Society
Available from: 2018-11-23 Created: 2018-11-23 Last updated: 2018-11-23Bibliographically approved
Troëng, T., Bergqvist, A. & Bergqvist, D. (2018). Successful pregnancies after neonatal aortic thrombosis, childhood arterial repair, and a deficient pelvic vasculature. Clinical Case Reports, 6(6), 1045-1047
Open this publication in new window or tab >>Successful pregnancies after neonatal aortic thrombosis, childhood arterial repair, and a deficient pelvic vasculature
2018 (English)In: Clinical Case Reports, E-ISSN 2050-0904, Vol. 6, no 6, p. 1045-1047Article in journal (Refereed) Published
Abstract [en]

Neonatal aortic bifurcation thrombosis can cause occlusion of iliac arteries causing abnormal pelvic vasculature and claudication in childhood. A bifurcation graft normalizes the perfusion of the legs but not of the pelvis. In a girl, this does not preclude successful pregnancies in adult life. It has not been reported before.

Keywords
Aortic bifurcation graft in childhood, childhood aortic surgery, neonatal aortic thrombosis, normal pregnancies in vascular abnormality, pelvic vascular abnormality and pregnancy
National Category
Cardiac and Cardiovascular Systems
Identifiers
urn:nbn:se:uu:diva-357696 (URN)10.1002/ccr3.1498 (DOI)000434217800014 ()29881560 (PubMedID)
Available from: 2018-08-22 Created: 2018-08-22 Last updated: 2018-08-22Bibliographically approved
Bergqvist, D., Mani, K., Troëng, T. & Wanhainen, A. (2018). Treatment of aortic aneurysms registered in Swedvasc: Development reflected in a national vascular registry with an almost 100% coverage. Gefässchirurgie, 23(5), 340-345
Open this publication in new window or tab >>Treatment of aortic aneurysms registered in Swedvasc: Development reflected in a national vascular registry with an almost 100% coverage
2018 (English)In: Gefässchirurgie, ISSN 0948-7034, E-ISSN 1434-3932, Vol. 23, no 5, p. 340-345Article in journal (Refereed) Published
Abstract [en]

Swedvasc is a registry for vascular surgical procedures, both open and endovascular. It was started in 1987 and since 1994 the whole population of Sweden is covered, at present around 10 million inhabitants. In a recent external validation, it was found to be highly accurate with abdominal aortic aneurysm surgery correctly reported in > 96%. In this paper various factors explaining the almost 100% coverage are discussed, one important being that the registry has been developed and maintained within the profession of vascular surgery and not dictated by authorities. Another factor of importance is the possibility to use data in various research projects and so far 15 PhD theses have used Swedvasc data. To exemplify the practical use of the registry, the treatment of abdominal aortic aneurysms is scrutinized and among the various complications abdominal compartment syndrome is analyzed. Several significant temporal changes have been observed over the almost 25 years of Swedvasc: increasing use of endovascular surgery, treatment of aneurysms detected by screening , decreasing treatment for rupture, improved outcome, increasing treatment of older patients and patients with comorbid conditions. In conclusion, a high quality national vascular registry can be valid with high compliance and can be used to study population-based development of treatment and outcome. It can also be used to perform international comparisons with other registries, thereby getting an indication of the quality of care.

Place, publisher, year, edition, pages
SPRINGER HEIDELBERG, 2018
Keywords
Vascular surgery, Vascular surgical procedures, Sweden/epidemiology, Population surveillance, Treatment outcome
National Category
Cardiac and Cardiovascular Systems
Identifiers
urn:nbn:se:uu:diva-362106 (URN)10.1007/s00772-018-0414-8 (DOI)000442589200009 ()30237668 (PubMedID)
Available from: 2018-10-01 Created: 2018-10-01 Last updated: 2018-10-01Bibliographically approved
Hoffner, M., Bagheri, S., Hansson, E., Manjer, J., Troëng, T. & Brorson, H. (2017). SF-36 Shows Increased Quality of Life Following Complete Reduction of Postmastectomy Lymphedema with Liposuction. Lymphatic Research and Biology, 15(1), 87-98
Open this publication in new window or tab >>SF-36 Shows Increased Quality of Life Following Complete Reduction of Postmastectomy Lymphedema with Liposuction
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2017 (English)In: Lymphatic Research and Biology, ISSN 1539-6851, E-ISSN 1557-8585, Vol. 15, no 1, p. 87-98Article in journal (Refereed) Published
Abstract [en]

Background: Arm lymphedema after breast cancer surgery affects women both from physical and psychological points of view. Lymphedema leads to adipose tissue deposition. Liposuction and controlled compression therapy (CCT) reduces the lymphedema completely. Methods and Results: Sixty female patients with arm lymphedema were followed for a 1-year period after surgery. The 36-item short-form health survey (SF-36) was used to assess health-related quality of life (HRQoL). Patients completed the SF-36 questionnaire before liposuction, and after 1, 3, 6, and 12 months. Preoperative excess arm volume was 1365 +/- 73mL. Complete reduction was achieved after 3 months and was sustained during follow-up. The adipose tissue volume removed at surgery was 1373 +/- 56mL. One month after liposuction, better scores were found in mental health. After 3 months, an increase in physical functioning, bodily pain, and vitality was detected. After 1 year, an increase was also seen for social functioning. The physical component score was higher at 3 months and thereafter, while the mental component score was improved at 3 and 12 months. Compared with SF-36 norm data for the Swedish population, only physical functioning showed lower values than the norm at baseline. After liposuction, general health, bodily pain, vitality, mental health, and social functioning showed higher values at various time points. Conclusions: Liposuction of arm lymphedema in combination with CCT improves patients HRQoL as measured with SF-36. The treatment seems to target and improve both the physical and mental health domains.

Place, publisher, year, edition, pages
Mary Ann Liebert, 2017
Keywords
SF-36, quality of life, lymphedema, liposuction, breast cancer
National Category
Cancer and Oncology Surgery
Identifiers
urn:nbn:se:uu:diva-320285 (URN)10.1089/lrb.2016.0035 (DOI)000397584400012 ()28135120 (PubMedID)
Funder
Swedish Cancer Society
Note

Available from: 2017-04-25 Created: 2017-04-25 Last updated: 2017-04-25Bibliographically approved
Zarrouk, M., Lundqvist, A., Holst, J., Troeng, T. & Gottsater, A. (2016). Cost-effectiveness of Screening for Abdominal Aortic Aneurysm in Combination with Medical Intervention in Patients with Small Aneurysms. European Journal of Vascular and Endovascular Surgery, 51(6), 766-773
Open this publication in new window or tab >>Cost-effectiveness of Screening for Abdominal Aortic Aneurysm in Combination with Medical Intervention in Patients with Small Aneurysms
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2016 (English)In: European Journal of Vascular and Endovascular Surgery, ISSN 1078-5884, E-ISSN 1532-2165, Vol. 51, no 6, p. 766-773Article in journal (Refereed) Published
Abstract [en]

Objectives: Screening for abdominal aortic aneurysm (AAA) among 65 year old men has been proven costeffective, but nowadays is conducted partly under new conditions. The prevalence of AAA has decreased, and endovascular aneurysm repair (EVAR) has become the predominant surgical method for AAA repair in many centers. At the Malmo Vascular Center pharmacological secondary prevention with statins, antiplatelet therapy, and blood pressure reduction is initiated and given to all patients with AAA. This study evaluates the costeffectiveness of AAA screening under the above mentioned conditions. Methods: This was a Markov cohort simulation. A total of 4,300 65 year old men were invited to annual AAA screening; the attendance rate was 78.3% and AAA prevalence was 1.8%. A Markov model with 11 health states was used to evaluate cost-effectiveness of AAA screening. Background data on rupture risks, costs, and effectiveness of surgical interventions were obtained from the participating unit, the national Swedvasc Registry, and from the scientific literature. Results: The additional costs of the screening strategy compared with no screening were 169 per person and year. The incremental health gain per subject in the screened cohort was 0.011 additional quality adjusted life years (QALYs), corresponding to an incremental cost-effectiveness ratio (ICER) of 15710 per QALY. Assuming a 10% reduction of all cause mortality, the incremental cost of screening was 175 per person and year. The gain per subject in the screened cohort was 0.013 additional QALYs, corresponding to an ICER of 13922 per QALY Conclusions: AAA screening remains cost-effective according to both the Swedish recommendations and the UK National Institute for Health and Care Excellence recommendations in the new era of lower AAA prevalence, EVAR as the predominant surgical method, and secondary prevention for all AAA patients.

Keywords
Abdominal aortic aneurysm, Markov, Screening
National Category
Cardiac and Cardiovascular Systems
Identifiers
urn:nbn:se:uu:diva-299902 (URN)10.1016/j.ejvs.2015.12.048 (DOI)000378441700004 ()26952345 (PubMedID)
Available from: 2016-07-29 Created: 2016-07-29 Last updated: 2017-11-28Bibliographically approved
Mitchell, D., Venermo, M., Mani, K., Björck, M., Troëng, T., Debus, S., . . . Lees, T. (2015). Quality Improvement in Vascular Surgery: The Role of Comparative Audit and Vascunet.. European Journal of Vascular and Endovascular Surgery, 49(1)
Open this publication in new window or tab >>Quality Improvement in Vascular Surgery: The Role of Comparative Audit and Vascunet.
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2015 (English)In: European Journal of Vascular and Endovascular Surgery, ISSN 1078-5884, E-ISSN 1532-2165, Vol. 49, no 1Article in journal (Refereed) Published
National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:uu:diva-267236 (URN)26347910 (PubMedID)
Available from: 2015-11-19 Created: 2015-11-19 Last updated: 2017-12-01
Rathenborg, L. K., Venermo, M., Troëng, T., Jensen, L. P., Vikatmaa, P., Wahlgren, C., . . . Kragsterman, B. (2014). Editor's choice - Safety of carotid endarterectomy after intravenous thrombolysis for acute ischaemic stroke: a case-controlled multicentre registry study. European Journal of Vascular and Endovascular Surgery, 48(6), 620-625
Open this publication in new window or tab >>Editor's choice - Safety of carotid endarterectomy after intravenous thrombolysis for acute ischaemic stroke: a case-controlled multicentre registry study
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2014 (English)In: European Journal of Vascular and Endovascular Surgery, ISSN 1078-5884, E-ISSN 1532-2165, Vol. 48, no 6, p. 620-625Article in journal (Refereed) Published
Abstract [en]

OBJECTIVE: Few studies have been published on the safety of carotid endarterectomy (CEA) after intravenous thrombolysis (IVT). Registry reports have been recommended in order to gather large study groups.

DESIGN: A retrospective, registry based, case controlled study on prospectively gathered data from Sweden, the capital region of Finland, and from Denmark, including 30 days of follow up.

METHODS: The study group was a consecutive series of 5526 patients who had CEA for symptomatic carotid artery stenosis during a 4.5 year period. Among these, 202 (4%) had IVT prior to surgery, including 117 having CEA within 14 days, and 59 within 7 days of thrombolysis. IVT as well as CEA were performed following established guidelines. The median time from index symptom to CEA was 12 days (range 0-130, IQR 7-21).

RESULTS: The 30 day combined stroke and death rate was 3.5% (95% CI 1.69-6.99) for those having IVT + CEA, 4.1% (95% CI 3.46-4.39) for those having CEA without previous IVT (odds ratio 0.84 [95% CI 0.39-1.81]), 3.4% (95% CI 1.33-8.39) for those having IVT + CEA within 14 days, and 5.1% (95% CI 1.74-13.91) for those having IVT + CEA within 7 days.

CONCLUSION: Data on the time from symptoms to CEA in patients not having IVT, Rankin score, degree of stenosis, and cerebral imaging were not available. Despite its weaknesses, this study reasserts that CEA can be performed within the recommended 2 weeks of the onset of symptoms and IVT without increasing the risk of peri-operative stroke or death. Centres and vascular registries are recommended to continue monitoring changes in patient characteristics, lead times, and major complications after CEA in general, with a special focus on those who have undergone a prior thrombolysis.

National Category
Surgery Cardiac and Cardiovascular Systems
Research subject
Surgery
Identifiers
urn:nbn:se:uu:diva-244642 (URN)10.1016/j.ejvs.2014.09.004 (DOI)000347739500006 ()25443523 (PubMedID)
Available from: 2015-02-19 Created: 2015-02-19 Last updated: 2017-12-04Bibliographically approved
Björck, M., Beiles, B., Menyhei, G., Thomson, I., Wigger, P., Venermo, M., . . . Troëng, T. (2014). Editor's Choice: Contemporary Treatment of Popliteal Artery Aneurysm in Eight Countries: A Report from the Vascunet Collaboration of Registries. European Journal of Vascular and Endovascular Surgery, 47(2), 164-171
Open this publication in new window or tab >>Editor's Choice: Contemporary Treatment of Popliteal Artery Aneurysm in Eight Countries: A Report from the Vascunet Collaboration of Registries
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2014 (English)In: European Journal of Vascular and Endovascular Surgery, ISSN 1078-5884, E-ISSN 1532-2165, Vol. 47, no 2, p. 164-171Article in journal (Refereed) Published
Abstract [en]

OBJECTIVES:

To study contemporary popliteal artery aneurysm (PA) repair.

METHODS:

Vascunet is a collaboration of population-based registries in 10 countries: eight had data on PA repair (Australia, Finland, Hungary, Iceland, New Zealand, Norway, Sweden, and Switzerland).

RESULTS:

From January 2009 until June 2012, 1,471 PA repairs were registered. There were 9.59 operations per million person years, varying from 3.4 in Hungary to 17.6 in Sweden. Median age was 70 years, ranging from 66 years in Switzerland and Iceland to 74 years in Australia and New Zealand; 95.6% were men and 44% were active smokers.

Elective surgery dominated, comprising 72% of all cases, but only 26.2% in Hungary and 39.7% in Finland, (p < .0001). The proportion of endovascular PA repair was 22.2%, varying from 34.7% in Australia, to zero in Switzerland, Finland, and Iceland (p < .0001). Endovascular repair was performed in 12.2% of patients with acute thrombosis and 24.1% of elective cases (p < .0001). A vein graft was used in 87.2% of open repairs, a synthetic or composite graft in 12.7%.

Follow-up was until discharge or 30 days. Amputation rate was 2.0% overall: 6.5% after acute thrombosis, 1.0% after endovascular, 1.8% after open repair, and 26.3% after hybrid repair (p < .0001). Mortality was 0.7% overall: 0.1% after elective repair, 1.6% after acute thrombosis, and 11.1% after rupture.

CONCLUSIONS:

Great variability between countries in incidence of operations, indications for surgery, and choice of surgical technique was found, possibly a result of surgical tradition rather than differences in case mix. Comparative studies with longer follow-up data are warranted.

National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:uu:diva-217051 (URN)10.1016/j.ejvs.2013.10.026 (DOI)000331499500009 ()24287153 (PubMedID)
Available from: 2014-01-28 Created: 2014-01-28 Last updated: 2017-12-06Bibliographically approved
Koraen-Smith, L., Troëng, T., Björck, M., Kragsterman, B. & Wahlgren, C.-M. (2014). Urgent Carotid Surgery and Stenting May Be Safe After Systemic Thrombolysis for Stroke. Stroke, 45(3), 776-780
Open this publication in new window or tab >>Urgent Carotid Surgery and Stenting May Be Safe After Systemic Thrombolysis for Stroke
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2014 (English)In: Stroke, ISSN 0039-2499, E-ISSN 1524-4628, Vol. 45, no 3, p. 776-780Article in journal (Refereed) Published
Abstract [en]

Background and Purpose Early carotid surgery or stenting after thrombolytic treatment for stroke has become more common during recent years. It is unclear whether this carries an increased risk of postoperative complications and death. The aim of this nationwide population-based study was, therefore, to investigate the safety of urgently performed carotid procedures in patients treated with thrombolysis for stroke. Methods Using the national Vascular and Stroke registries, we identified 3998 patients who had undergone carotid endarterectomy or carotid artery stenting for symptomatic carotid stenosis between May 2008 and December 2012. Among these, 2% (79 of 3998) had undergone previous thrombolysis for stroke. We conducted a retrospective review of registry data and individual case records with regard to postoperative complications, including surgical-site bleeding, stroke, and death. The outcome was compared with the results for the remaining patient cohort (3919 of 3998) undergoing carotid surgery and stenting during the study period. Results The median time between thrombolysis and the carotid procedure was 10 days. Seventy-one patients underwent carotid endarterectomy, and 6 patients underwent carotid artery stenting. The 30-day death and stroke rate for the thrombolysis cohort was 2.5% (2 of 79), and for the whole cohort, it was 3.8% (139 of 3626; P=0.55). The postoperative bleeding rates requiring reoperation were not significantly different between the groups (3.8% [3 of 79] in the thrombolysis group versus 3.3% [119 of 3626] in the whole cohort; P=0.79). There was no correlation between time from lysis to surgery or stenting and complications at 30 days postoperatively. Conclusions Urgent carotid endarterectomy or carotid artery stenting after thrombolysis for stroke may be safe without increased risk of serious complications.

Keywords
endarterectomy, carotid, stroke, thrombolytic therapy
National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:uu:diva-222758 (URN)10.1161/STROKEAHA.113.003763 (DOI)000331876800038 ()
Available from: 2014-04-14 Created: 2014-04-14 Last updated: 2017-12-05Bibliographically approved
Lees, T., Troëng, T., Thomson, I. A., Menyhei, G., Simo, G., Beiles, B., . . . Björck, M. (2012). International Variations in Infrainguinal Bypass Surgery: A VASCUNET Report. European Journal of Vascular and Endovascular Surgery, 44(2), 185-192
Open this publication in new window or tab >>International Variations in Infrainguinal Bypass Surgery: A VASCUNET Report
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2012 (English)In: European Journal of Vascular and Endovascular Surgery, ISSN 1078-5884, E-ISSN 1532-2165, Vol. 44, no 2, p. 185-192Article in journal (Refereed) Published
Abstract [en]

OBJECTIVES:

To compare practice in lower limb bypass surgery in nine countries.

DESIGN:

A prospective study amalgamating and analysing data from national and regional vascular registries.

METHODS:

A table of data fields and definitions was agreed by all member countries of the Vascunet Collaboration. Data from January 2005 to December 2009 was submitted to a central database.

RESULTS:

32,084 cases of infrainguinal bypass (IIB) in nine countries were analysed. Procedures per 100,000 population varied between 2.3 in the UK and 24.6 in Finland. The proportion of women varied from 25% to 43.5%. The median age for all countries was 70 for men and 76 for women. Hungary treated the youngest patients. IIB was performed for claudication for between 15.7% and 40.8% of all procedures. Vein grafts were used in patients operated on for claudication (52.9%), for rest pain (66.7%) and tissue loss (74.1%). Italy had the highest use of synthetic grafts. Among claudicants 45% of bypasses were performed to the below knee popliteal artery or more distally. Graft patency at 30 days varied between 86% and 99%.

CONCLUSIONS:

Significant variations in practice between countries were demonstrated. These results should be interpreted alongside the known limitations of such registry data with respect to quality and completeness of the data. Variation in data completeness and data validation between countries needs to be improved for useful international comparison of outcomes.

National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:uu:diva-177101 (URN)10.1016/j.ejvs.2012.05.006 (DOI)000308772000019 ()22658613 (PubMedID)
Available from: 2012-07-04 Created: 2012-07-04 Last updated: 2017-12-07Bibliographically approved
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