Precise Stent Placement Using the New Siemens Artis Zeego 3D Rotation Angiography in a Stenosis of a Shelhigh Pulmonary Conduit

2010 ◽  
Vol 5 (2) ◽  
pp. 128-130
Author(s):  
Anno Diegeler ◽  
Stefan Fröhner ◽  
Ingo Dähnert
Keyword(s):  
Computed Tomography ◽  
Stent Placement ◽  
Early Onset ◽  
Pulmonary Valve ◽  
Distal Segment ◽  
Ross Procedure ◽  
Pulmonary Conduit ◽  
Artis Zeego

Stenting of the Shelhigh pulmonary conduit was performed 2 years after a Ross procedure because of a stenosis of the distal segment. We used the new Siemens Artis Zeego technology. A precise placement of the stent to release the stenosis within the distal segment simultaneously retaining a competent valve was possible by using the Dyna-computed tomography technology. The early onset of a stenosis of the Shelhigh xenograft in the pulmonary position is alarming, thus, its use can not be recommended for a replacement of the pulmonary valve.

Histology of a Degenerated Tissue Engineered Pulmonary Valve 10 Years after Ross Procedure

2016 ◽  
Vol 64 (S 01) ◽  
Author(s):  
S. Steinbach ◽  
M.-T. Dieterlen ◽  
T. Noack ◽  
P. Dohmen ◽  
F. Mohr ◽  
...  
Keyword(s):  
Pulmonary Valve ◽  
Ross Procedure

Heterogeneity between proximal and distal aspects of occlusive thrombi on pretreatment imaging in acute ischemic stroke

2021 ◽  
pp. 197140092110497
Author(s):  
Tetsuya Hashimoto ◽  
Takenobu Kunieda ◽  
Tristan Honda ◽  
Fabien Scalzo ◽  
Latisha K Sharma ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Ischemic Stroke ◽  
Region Of Interest ◽  
Hounsfield Unit ◽  
Distal Segment ◽  
Large Vessel Occlusion ◽  
Anterior Circulation ◽  
Vessel Occlusion ◽  
The Difference

Background The potential heterogeneity in occlusive thrombi caused by in situ propagation by secondary thrombosis after embolic occlusion could obscure the characteristics of original thrombi, preventing the clarification of a specific thrombus signature for the etiology of ischemic stroke. We aimed to investigate the heterogeneity of occlusive thrombi by pretreatment imaging. Methods Among consecutive stroke patients with acute embolic anterior circulation large vessel occlusion treated with thrombectomy, we retrospectively reviewed 104 patients with visible occlusive thrombi on pretreatment non-contrast computed tomography admitted from January 2015 to December 2018. A region of interest was set on the whole thrombus on non-contrast computed tomography under the guidance of computed tomography angiography. The region of interest was divided equally into the proximal and distal segments and the difference in Hounsfield unit densities between the two segments was calculated. Results Hounsfield unit density in the proximal segment was higher than that in the distal segment (mean difference 4.45; p < 0.001), regardless of stroke subtypes. On multivariate analysis, thrombus length was positively correlated (β = 0.25; p < 0.001) and time from last-known-well to imaging was inversely correlated (β = −0.0041; p = 0.002) with the difference in Hounsfield unit densities between the proximal and distal segments. Conclusions The difference in density between the proximal and distal segments increased as thrombi became longer and decreased as thrombi became older after embolic occlusion. This time/length-dependent thrombus heterogeneity between the two segments is suggestive of secondary thrombosis initially occurring on the proximal side of the occlusion.

Congenital bicuspid pulmonary valve. An uncommon impede for Ross procedure

2016 ◽  
Vol 117 (2) ◽  
pp. 115-117 ◽  
Author(s):  
Stéphane Kajingu Enciso ◽  
Maxime Elens ◽  
Jean Rubay
Keyword(s):  
Pulmonary Valve ◽  
Ross Procedure

Computed Tomography Lung Volume Changes After Surgical Treatment for Early-Onset Scoliosis

2014 ◽  
Vol 2 (6) ◽  
pp. 460-466 ◽  
Author(s):  
Charles E. Johnston ◽  
Anna McClung ◽  
Salah Fallatah
Keyword(s):  
Computed Tomography ◽  
Surgical Treatment ◽  
Lung Volume ◽  
Early Onset ◽  
Early Onset Scoliosis ◽  
Volume Changes

Congenital isolated absence of a single cusp of pulmonary valve

2021 ◽  
pp. 021849232110609
Author(s):  
Niraj Nirmal Pandey ◽  
Mumun Sinha ◽  
Arun Sharma ◽  
Ambuj Roy
Keyword(s):  
Computed Tomography ◽  
Pulmonary Valve ◽  
Heart Defects ◽  
Cardiac Computed Tomography ◽  
Main Pulmonary Artery ◽  
Pulmonary Regurgitation ◽  
Pulmonary Insufficiency ◽  
Cardiac Computed Tomography Angiography ◽  
Arterial Circulation ◽  
Pulmonary Arterial

A 25-year-old, previously asymptomatic female, presented to the outpatient clinic with episodic palpitations for past 6 months. She was acyanotic and showed no peripheral stigmata of infective endocarditis. Transthoracic echocardiography revealed dilated right ventricle with severe low-pressure pulmonary regurgitation. A cardiac computed tomography angiography performed for evaluation of pulmonary arterial circulation and intracardiac anatomy revealed isolated absence of posterior pulmonary cusp. The two other (right anterior and left anterior) cusps were normal and covered only part of the valve orifice, resulting in pulmonary insufficiency. The main pulmonary artery showed asymmetric dilatation. No other structural heart defects were noted.

Abstract 2866: The Ross-Yacoub Operation For Aneurismal Autograft Roots: A Strategy To Preserve Autologous Pulmonary Valves And Normal Quality Of Life

Circulation ◽  
2008 ◽  
Vol 118 (suppl_18) ◽  
Author(s):  
Giovanni Battista Luciani ◽  
Francesca Viscardi ◽  
Mara Pilati ◽  
Maria Antonia Prioli ◽  
Giuseppe Faggian ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Pulmonary Valve ◽  
Nyha Class ◽  
Root Diameter ◽  
Ross Procedure ◽  
Cross Sectional ◽  
Uncomplicated Pregnancy ◽  
Valve Insufficiency ◽  
Valve Sparing

Background: Prevalence of autograft dilatation late after the Ross procedure is increasing. To define feasibility and outcome of autograft valve-sparing root reoperation, a 14-year clinical experience was reviewed. Methods: One-hundred-twenty-five late survivors after the Ross procedure (7.0±1.9, 0.5–14 years) had cross-sectional clinical and echocardiographic examination. End-points were freedom from autograft dilatation (Ø>4 cm), from root reoperation, from root replacement and functional outcome after valve-sparing reoperation. Results: Autograft dilatation was found in 33 (26%) patients (freedom of 46±12% at 14 years):12 (10%) patients had aortic aneurysm (>5.0 cm). Age at Ross was 22.6±8.8 years, diagnosis was AI in 9, AS in 1, mixed in 2; 10 had bicuspid aortic valve and 3 prior cardiac operations. All, but one (cylinder inclusion), had undergone root technique. Risk factors for root reoperation were younger age (p=0.04), prior operation (p=0.01), root technique (p=0.001). Nine of 12 had reoperation for aneurysm at 7.8±1.8 years after the Ross procedure, 3 are scheduled. During this study, 2 additional patients underwent root reoperation 12.6 years after Ross procedure done abroad. Two patients had root replacement and 9 (82%) remodelling with autograft-valve preservation (7 Yacoub, 2 sinotubular junction/ascending aorta): all survived. Severe AI, but not root diameter, was associated with failure to preserve the valve (p=0.015). Fourteen-year freedom from root reoperation was 80±8% and from full root replacement 96±3%. Up to 6 years (mean 3.1±1.5) after reoperation, all pts are in NYHA class I and medication-free: 8/9 patients have mild AI or less, while 1 required valve replacement 51 months after remodeling. One patient carried out an uncomplicated pregnancy 3 years after Ross-Yacoub operation. Conclusions: Root reoperation with pulmonary valve preservation is feasible in most patients with autograft aneurysm, allowing for maintenance of normal quality of life. Referral of patients with dilated root for surgery prior to onset of severe valve insufficiency increases likelihood of pulmonary valve-sparing. Mid-term functional behaviour of remodelled autograft roots is rewarding, however continued observation is warranted.

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