Abstract
To compare in vivo strain in abdominal aortic aneurysms before and after endovascular aneurysm repair (EVAR), thereby obtaining a quantitative measure of changes in mechanical burden on the aneurysm wall. Transabdominal ultrasound was acquired from 10 patients (9 men; median age 76 years, range 61-83) 1 day before and 2 days after elective EVAR. Strain was estimated as the relative cyclic elongation and contraction of the wall tissue in a number of connected segments along the aneurysm circumference. For each time instance of the cardiac cycle, the maximum and the average strain values along the circumference were recorded. The temporal maximums of these parameters (defined as the maximum strain and the peak average strain, respectively) were compared before and after EVAR. Both maximum strain and peak average strain were reduced following EVAR by 41% (range 35%-63%) and 68% (range 41%-93%), respectively. Despite the reduction, cyclic strain was still evident after the stent-graft was placed, even when no evidence of endoleak was found. Further, the strain values were inhomogeneous along the circumference, both before and after treatment. In 2 cases, endoleak was proven by routine computed tomography; the relative reduction in ...Continue Reading
References
Apr 1, 1991·Ultrasonic Imaging·J OphirX Li
May 12, 1998·Journal of Vascular Surgery·M MalinaJ Brunkwall
Jul 31, 1998·Journal of Vascular Surgery·Y S AlimiC Juhan
Nov 13, 1998·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·A HeimdalT Skjaerpe
Feb 7, 2001·Journal of Vascular Surgery·M L RaghavanM W Webster
Jul 6, 2000·Journal of Vascular Surgery·Y G WolfC K Zarins
Jul 13, 2000·Journal of Endovascular Surgery : the Official Journal of the International Society for Endovascular Surgery·G H WhiteJ Harris
Sep 30, 2000·Journal of Vascular Surgery·R Y RheeM S Makaroun
Oct 17, 2001·Journal of Medical Engineering & Technology·M J ThubrikarB Fowler
Nov 13, 2001·European Journal of Ultrasound : Official Journal of the European Federation of Societies for Ultrasound in Medicine and Biology·S A SlørdahlH Torp
Nov 23, 2001·Journal of Endovascular Therapy : an Official Journal of the International Society of Endovascular Specialists·B RisbergL Lönn
Feb 28, 2002·European Journal of Vascular and Endovascular Surgery : the Official Journal of the European Society for Vascular Surgery·A W F VosJ A Rauwerda
May 22, 2002·Journal of Vascular Surgery·Elliot L ChaikofUNKNOWN Ad Hoc Committee for Standardized Reporting Practices in Vascular Surgery of The Society for Vascular Surgery/American Assoc
Oct 23, 2002·European Journal of Vascular and Endovascular Surgery : the Official Journal of the European Society for Vascular Surgery·M GawendaJ Brunkwall
Mar 29, 2003·Journal of Vascular Surgery·Mark F FillingerFrancis E Kennedy
Mar 29, 2003·Journal of Vascular Surgery·Manish MehtaR Clement Darling
Aug 23, 2003·Journal of Endovascular Therapy : an Official Journal of the International Society of Endovascular Specialists·A W Floris VosJan A Rauwerda
Oct 16, 2003·Journal of Vascular Surgery·Peter L FariesMichael L Marin
Jan 14, 2004·Journal of Vascular Surgery·Christopher K ZarinsThomas J Fogarty
Jun 12, 2004·Journal of Vascular Surgery·Nuno V DiasBjörn Sonesson
Sep 15, 2004·The Surgical Clinics of North America·Maarit A HeikkinenChristopher K Zarins
Jan 18, 2005·Ultrasound in Medicine & Biology·Tormod SelbekkGeirmund Unsgaard
Apr 13, 2005·Journal of Endovascular Therapy : an Official Journal of the International Society of Endovascular Specialists·Manish MehtaDhiraj M Shah
Sep 21, 2005·Acta neurochirurgica·G UnsgaardT A Nagelhus Hernes
Dec 21, 2005·Ultrasound in Medicine & Biology·Reidar BrekkenHans Olav Myhre
Citations
Jun 2, 2016·European Journal of Cardio-thoracic Surgery : Official Journal of the European Association for Cardio-thoracic Surgery·Foeke J H NautaSanti Trimarchi
Jan 20, 2017·Journal of Endovascular Therapy : an Official Journal of the International Society of Endovascular Specialists·Foeke J H NautaSanti Trimarchi
Mar 10, 2012·Vascular Medicine·Efstratios GeorgakarakosMiltos Lazarides