Introduction: Transcatheter pulmonary valve implantation has been an effective treatment for dysfuntional right ventricular tract outflow tract (RVOT). Defining a landing zone before the intervention is crucial in patients with native RVOT. Improper sizing and undefined landing zone will lead to embolization. Methods: It is a retrospective observational study from August 2020 to December 2020 in native RVOT. Three patients who had significant Right ventricle dilatation were analyzed. The multi-slice computed tomography (MSCT) with magnetic resonance imaging and angiography data of all patients before the procedure were analyzed. All patients underwent an angiogram in the same sitting, before the procedure to assess the landing zone, valve diameter as well as the risk for coronary compression. We chose a valve based on valve area 23%-25% more than the area at the waist during balloon sizing. Results: All three patients underwent successful valve implantation. Valve sizes used were 27.5 mm in one and 32 mm in the other two. The mean RVOT gradient postprocedure was 11.5 mm Hg and pre procedure was 43 mmHg. There were no complications during the procedure or at a mean follow-up of 3.6 months. Conclusion: The balloon sizing gives the true narrowest diameter in comparison with MSCT, and increasing this area by 23%-25% will give the appropriate valve size for successful implantation. Copyright:
Introduction: Transcatheter pulmonary valve implantation has been an effective treatment for dysfuntional right ventricular tract outflow tract (RVOT). Defining a landing zone before the intervention is crucial in patients with native RVOT. Improper sizing and undefined landing zone will lead to embolization. Methods: It is a retrospective observational study from August 2020 to December 2020 in native RVOT. Three patients who had significant Right ventricle dilatation were analyzed. The multi-slice computed tomography (MSCT) with magnetic resonance imaging and angiography data of all patients before the procedure were analyzed. All patients underwent an angiogram in the same sitting, before the procedure to assess the landing zone, valve diameter as well as the risk for coronary compression. We chose a valve based on valve area 23%-25% more than the area at the waist during balloon sizing. Results: All three patients underwent successful valve implantation. Valve sizes used were 27.5 mm in one and 32 mm in the other two. The mean RVOT gradient postprocedure was 11.5 mm Hg and pre procedure was 43 mmHg. There were no complications during the procedure or at a mean follow-up of 3.6 months. Conclusion: The balloon sizing gives the true narrowest diameter in comparison with MSCT, and increasing this area by 23%-25% will give the appropriate valve size for successful implantation. Copyright:
Authors: Lee N Benson; Matthew J Gillespie; Lisa Bergersen; Sharon L Cheatham; Kan N Hor; Eric M Horlick; Shicheng Weng; Brian T McHenry; Mark D Osten; Andrew J Powell; John P Cheatham Journal: Circ Cardiovasc Interv Date: 2020-01-09 Impact factor: 6.546
Authors: Alfred Hager; Stephan Schubert; Peter Ewert; Lars Søndergaard; Maarten Witsenburg; Paolo Guccione; Lee N Benson; José Suárez de Lezo; Te-Hsin Lung; John Hess; Andreas Eicken; Felix Berger Journal: EuroIntervention Date: 2017-02-20 Impact factor: 6.534
Authors: Allison K Cabalka; William E Hellenbrand; Andreas Eicken; Jacqueline Kreutzer; Robert G Gray; Lisa Bergersen; Felix Berger; Aimee K Armstrong; John P Cheatham; Evan M Zahn; Doff B McElhinney Journal: JACC Cardiovasc Interv Date: 2017-08-16 Impact factor: 11.195
Authors: P Bonhoeffer; Y Boudjemline; Z Saliba; J Merckx; Y Aggoun; D Bonnet; P Acar; J Le Bidois; D Sidi; J Kachaner Journal: Lancet Date: 2000-10-21 Impact factor: 79.321
Authors: Arka Chatterjee; Navkaranbir S Bajaj; William S McMahon; Marc G Cribbs; Jeremy S White; Amrita Mukherjee; Mark A Law Journal: J Am Heart Assoc Date: 2017-08-04 Impact factor: 5.501