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Hermansson, Ulf
Publications (7 of 7) Show all publications
Ahlsson, A., Jideus, L., Albåge, A., Källner, G., Holmgren, A., Boano, G., . . . Berglin, E. (2012). A Swedish consensus on the surgical treatment of concomitant atrial fibrillation. Scandinavian Cardiovascular Journal, 46(4), 212-218
Open this publication in new window or tab >>A Swedish consensus on the surgical treatment of concomitant atrial fibrillation
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2012 (English)In: Scandinavian Cardiovascular Journal, ISSN 1401-7431, E-ISSN 1651-2006, Vol. 46, no 4, p. 212-218Article, review/survey (Refereed) Published
Abstract [en]

Atrial fibrillation (AF) is a common arrhythmia among patients scheduled for open heart surgery and is associated with increased morbidity and mortality. According to international guidelines, symptomatic and selected asymptomatic patients should be offered concomitant surgical AF ablation in conjunction with valvular or coronary surgery. The gold standard in AF surgery is the Cox Maze III ("cut-and-sew") procedure, with surgical incisions in both atria according to a specified pattern, in order to prevent AF reentry circuits from developing. Over 90% of patients treated with the Cox Maze III procedure are free of AF after 1 year. Recent developments in ablation technology have introduced several energy sources capable of creating nonconducting atrial wall lesions. In addition, simplified lesion patterns have been suggested, but results with these techniques have been unsatisfactory. There is a clear need for standardization in AF surgery. The Swedish Arrhythmia Surgery Group, represented by surgeons from all Swedish units for cardiothoracic surgery, has therefore reached a consensus on surgical treatment of concomitant AF. This consensus emphasizes adherence to the lesion pattern in the Cox Maze III procedure and the use of biatrial lesions in nonparoxysmal AF.

Place, publisher, year, edition, pages
Informa Healthcare, 2012
Keywords
atrial fibrillation; cardiac surgery; consensus
National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:liu:diva-79655 (URN)10.3109/14017431.2012.671489 (DOI)000306190700004 ()
Available from: 2012-08-14 Created: 2012-08-13 Last updated: 2017-12-07
Dyverfeldt, P., Escobar Kvitting, J.-P., Carlhäll, C. J., Boano, G., Sigfridsson, A., Hermansson, U., . . . Ebbers, T. (2011). Hemodynamic aspects of mitral regurgitation assessed by generalized phase-contrast MRI. Journal of Magnetic Resonance Imaging, 33(3), 582-588
Open this publication in new window or tab >>Hemodynamic aspects of mitral regurgitation assessed by generalized phase-contrast MRI
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2011 (English)In: Journal of Magnetic Resonance Imaging, ISSN 1053-1807, E-ISSN 1522-2586, Vol. 33, no 3, p. 582-588Article in journal (Refereed) Published
Abstract [en]

Purpose: Mitral regurgitation creates a high velocity jet into the left atrium (LA), contributing both volume andpressure; we hypothesized that the severity of regurgitation would be reflected in the degree of LA flowdistortion.

Material and Methods: Three-dimensional cine PC-MRI was applied to determine LA flow patterns andturbulent kinetic energy (TKE) in seven subjects (five patients with posterior mitral leaflet prolapse, two normalsubjects). In addition, the regurgitant volume and the time-velocity profiles in the pulmonary veins weremeasured.

Results: The LA flow in the mitral regurgitation patients was highly disturbed with elevated values of TKE.Peak TKE occurred consistently at late systole. The total LA TKE was closely related to the regurgitant volume.LA flow patterns were characterized by a pronounced vortex in proximity to the regurgitant jet. In some patients,pronounced discordances were observed between individual pulmonary venous inflows, but these could not berelated to the direction of the flow jet or parameters describing global LA hemodynamics.

Conclusion: PC-MRI permits investigations of atrial and pulmonary vein flow patterns and TKE in significantmitral regurgitation, reflecting the impact of the highly disturbed blood flow that accompanies this importantvalve disease.

Place, publisher, year, edition, pages
John Wiley and Sons, 2011
Keywords
Hemodynamics, mitral valve insufficiency, turbulent flow, phase-contrast magnetic resonance imaging, pulmonary veins, blood flow velocity
National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:liu:diva-53190 (URN)10.1002/jmri.22407 (DOI)000287951100009 ()
Available from: 2010-01-19 Created: 2010-01-19 Last updated: 2017-12-12
Dyverfeldt, P., Escobar Kvitting, J. P., Boano, G., Carlhäll, C., Sigfridsson, A., Hermansson, U., . . . Ebbers, T. (2009). Turbulence Mapping Extends the Utility of Phase-Contrast MRI in Mitral Valve Regurgitation. In: Proc. Intl. Soc. Mag. Reson. Med.. Paper presented at ISMRM (pp. 3939).
Open this publication in new window or tab >>Turbulence Mapping Extends the Utility of Phase-Contrast MRI in Mitral Valve Regurgitation
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2009 (English)In: Proc. Intl. Soc. Mag. Reson. Med., 2009, p. 3939-Conference paper, Published paper (Refereed)
National Category
Biomedical Laboratory Science/Technology
Identifiers
urn:nbn:se:liu:diva-58096 (URN)
Conference
ISMRM
Available from: 2010-08-23 Created: 2010-07-29 Last updated: 2013-12-17Bibliographically approved
Szabó, Z., Träff, S., Hermansson, U., Tamas, E., Maros, T. & Szentkiralyi, I. (2008). Kiegészítő klinikai módszer a nyitott szívműtéteknél fellépő légembolisatio csökkentésére: [A complementary clinical method to minimize air embolism during open-heart surgery]. Magyar Sebeszet, 61, 57-59
Open this publication in new window or tab >>Kiegészítő klinikai módszer a nyitott szívműtéteknél fellépő légembolisatio csökkentésére: [A complementary clinical method to minimize air embolism during open-heart surgery]
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2008 (Hungarian)In: Magyar Sebeszet, ISSN 0025-0295, Vol. 61, p. 57-59Article in journal (Refereed) Published
Abstract [en]

Air from the left heart is ejected even up to several hours after cardiopulmonary bypass (CPB) despite the use of CO 2 . The following method is complementary in addition to surgical de-airing in order to further reduce the chance of air embolism, especially from the pulmonary veins. After re-expanding the lungs with standard bag inflation, the ventilation is restarted in consultation with the surgeon. The ventilator is set to the respiratory minute volume used before the CPB but at a respiratory frequency of 10/minutes whereas the regularly beating heart is filled from the heart lung machine. Transoesophageal echocardiography (TEE) reliably controls the effect.

Place, publisher, year, edition, pages
Akademiai Kiado, 2008
Keywords
open heart surgery, air embolism prevention, transoesophageal echocardiography
National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:liu:diva-93657 (URN)10.1556/MaSeb.61.2008.Suppl.14 (DOI)18504240 (PubMedID)
Available from: 2013-06-05 Created: 2013-06-05 Last updated: 2017-04-05Bibliographically approved
Walfridsson, H., Jönsson, A., Lehto, M., Ahlson, A., Ahn, H. C., Hermansson, U., . . . Werkkala, K. (2008). Microwave ablation in mitral valve surgery for atrial fibrillation (MAMA). In: American Heart Associations Scientific Sessions,2008.
Open this publication in new window or tab >>Microwave ablation in mitral valve surgery for atrial fibrillation (MAMA)
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2008 (English)In: American Heart Associations Scientific Sessions,2008, 2008Conference paper, Published paper (Refereed)
Abstract [en]

 Number 4082

National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:liu:diva-44717 (URN)77467 (Local ID)77467 (Archive number)77467 (OAI)
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2013-12-17
Hager, J., Lundgren, F., Forssell, C., FranzÉn, S., Hermansson, U., Isaksson, L. & Vanhanen, I. (2005). Surgery for descending and thoracoabdominal aortic aneurysms. In: Kardiovaskulära vårmötet,2005.
Open this publication in new window or tab >>Surgery for descending and thoracoabdominal aortic aneurysms
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2005 (English)In: Kardiovaskulära vårmötet,2005, 2005Conference paper, Published paper (Other academic)
National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:liu:diva-33854 (URN)19927 (Local ID)19927 (Archive number)19927 (OAI)
Available from: 2009-10-09 Created: 2009-10-09
Konstantinov, I. & Hermansson, U. (2001). Intrathoracic migration of Kirschner pins: Is video-assisted thoracic surgery justified?. Annals of Thoracic Surgery, 72(2)
Open this publication in new window or tab >>Intrathoracic migration of Kirschner pins: Is video-assisted thoracic surgery justified?
2001 (English)In: Annals of Thoracic Surgery, ISSN 0003-4975, E-ISSN 1552-6259, Vol. 72, no 2, p. 668-668Other (Other academic)
Publisher
p. 668-668
National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:liu:diva-49193 (URN)
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2017-12-12
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