scholarly journals Use of Oversized Injectable Valves in Growing Children for Total Repair of Right Ventricular Outflow Tract Anomalies (Preliminary Results)

2014 ◽  
Vol 41 (4) ◽  
pp. 373-380 ◽  
Author(s):  
Luca Deorsola ◽  
Pietro Angelo Abbruzzese
Keyword(s):  
Right Ventricular ◽  
Pulmonary Regurgitation ◽  
Right Ventricular Outflow Tract ◽  
Ventricular Outflow Tract ◽  
Outflow Tract ◽  
Expansion Process ◽  
Preliminary Results ◽  
Original Size ◽  
The Right

Right ventricular outflow tract surgery was originally confined to transannular patching, in the belief that pulmonary regurgitation was well tolerated. Because follow-up evaluations revealed the deleterious effects of pulmonary regurgitation, surgery today aims to spare or replace the valve. Available replacement devices have short lifetimes, considering growth mismatch in children. We hypothesize that oversizing the right infundibulum anticipates growth and that a squeezed prosthesis can complete the expansion process. The No-React® Injectable BioPulmonic Valve is designed for right infundibular surgery in adults, and hundreds of implants have shown promising results. We used this device for surgery in babies, with the addition of an innovative oversizing technique. This study evaluates our preliminary results and investigates whether such a technique might reduce growth mismatch. From September 2010 through July 2012, we implanted 11 injectable pulmonic valves. The median age of our patients was 23 months. After opening the right infundibulum, we enlarged it as much as possible with a wide patch. Before completing the patch suture, we injected an oversized valve. No problems occurred during surgery. No major insufficiency or leak was observed. We conclude that prostheses can be quite oversized and perform well even when not completely expanded. Oversized injectable pulmonic valves, shrunken to a smaller diameter, enabled the implantation of a device wider than otherwise possible, without affecting performance. Moreover, the prosthesis tended to return to its original size following growth, thereby reducing growth mismatch. Longer follow-up and larger numbers of patients are needed for verification.

Stenting of the right ventricular outflow tract in symptomatic neonatal tetralogy of Fallot

2013 ◽  
Vol 24 (2) ◽  
pp. 369-373 ◽  
Author(s):  
Nikolaus A. Haas ◽  
Thorsten K. Laser ◽  
Axel Moysich ◽  
Ute Blanz ◽  
Eugen Sandica
Keyword(s):  
Pulmonary Artery ◽  
Right Ventricular ◽  
Tetralogy Of Fallot ◽  
Pulmonary Regurgitation ◽  
Right Ventricular Outflow Tract ◽  
Ventricular Outflow Tract ◽  
Outflow Tract ◽  
Ventricular Performance ◽  
Right Ventricular Performance ◽  
The Right

AbstractThere is ongoing debate regarding the initial management of symptomatic neonates with tetralogy of Fallot. Although neonatal repair can be performed with low mortality, it is associated with increased morbidity and long-term impact on right ventricular performance. Traditionally, the modified Blalock–Taussig shunt remains the palliative procedure of choice. Differential pulmonary artery flow may occur and subsequently result in underdevelopment and distortion of pulmonary vessels. Transcatheter therapy was previously limited to balloon valvulotomy when the obstruction is predominantly at the pulmonary valve level. Stenting of the right ventricular outflow tract can enable adequate forward flow; however, pulmonary regurgitation may impact on right ventricular performance and cardiac output. Stenting of the right ventricular outflow tract with valve sparing placement of the stent thus treating the underlying pathophysiology of the hypercyanotic spells provides a safe and effective management strategy, improving arterial oxygen saturation, avoiding pulmonary regurgitation and encouraging pulmonary artery growth.

scholarly journals Recent advances in transcatheter management of pulmonary regurgitation after surgical repair of tetralogy of Fallot

F1000Research ◽  
2018 ◽  
Vol 7 ◽  
pp. 679 ◽  
Author(s):  
Matthew I Jones ◽  
Shakeel A Qureshi
Keyword(s):  
Right Ventricular ◽  
Tetralogy Of Fallot ◽  
Surgical Repair ◽  
Pulmonary Regurgitation ◽  
Right Ventricular Outflow Tract ◽  
Ventricular Outflow Tract ◽  
Outflow Tract ◽  
Repeat Surgery ◽  
Patch Technique ◽  
The Right

Surgical repair of tetralogy of Fallot (ToF) in childhood is associated with generally good outcomes, and almost all children can be expected to survive until adulthood. However, significant pulmonary regurgitation leading to progressive right ventricular dilatation is common in teenagers or young adults because of the nature of the surgical intervention. In patients whose repair included placement of a right ventricle to pulmonary artery conduit, it has been possible to place a stented valve within the conduit to treat this. Pulmonary regurgitation after repair of ToF via a transannular patch technique has historically involved repeat surgery as the dimensions of the right ventricular outflow tract have been too large for commercially available valves. This review summarises the novel transcatheter valves available for management of pulmonary regurgitation after surgical repair of ToF in patients in whom the dimensions of the right ventricular outflow tract have previously been considered too large for transcatheter valve implantation.

scholarly journals Managing the right ventricular outflow tract for pulmonary regurgitation after tetralogy of Fallot repair

Heart Asia ◽  
2013 ◽  
Vol 5 (1) ◽  
pp. 106-111 ◽  
Author(s):  
Michael Hauser ◽  
Andreas Eicken ◽  
Andreas Kuehn ◽  
John Hess ◽  
Sohrab Fratz ◽  
...  
Keyword(s):  
Right Ventricular ◽  
Tetralogy Of Fallot ◽  
Pulmonary Regurgitation ◽  
Right Ventricular Outflow Tract ◽  
Ventricular Outflow Tract ◽  
Outflow Tract ◽  
The Right ◽  
Tetralogy Of Fallot Repair

scholarly journals Different conduits for the right ventricular outflow tract reconstruction in adults during the Ross procedure

2015 ◽  
Vol 17 (2) ◽  
pp. 23 ◽  
Author(s):  
A. M. Karaskov ◽  
I. I. Demin ◽  
R. M. Sharifulin ◽  
S. I. Zheleznev ◽  
A. V. Bogachev-prokofev ◽  
...  
Keyword(s):  
Right Ventricular ◽  
Multivariable Analysis ◽  
Right Ventricular Outflow Tract ◽  
Ventricular Outflow Tract ◽  
Outflow Tract ◽  
Ross Procedure ◽  
Acceptable Alternative ◽  
The Right ◽  
Pulmonary Homograft

We compared different conduits for the right ventricular outflow tract reconstruction (RVOT) in adults during the Ross procedure. Between 1998 and 2012, 586 consecutive adult patients underwent the Ross procedures. Mean age was 45,514,2 years. The RVOT was reconstructed with a diepoxy-treated xenografts in 372 and with glutaraldehyde-treated in 88 patients. A pulmonary homograft was used in 125 patients. Hospital mortality was 4,9%. Mean follow up was 43,216,9 months. At discharge systolic gradient was 8,1 3,7 mm.Hg for the pulmonary homograft, 11,44,7 mm.Hg for the diepoxytreated and 14,96,1 mm.Hg for the glutaraldehyde-treated xenopericardial conduits. Twenty eight patients underwent reoperation. The 3-year actuarial freedom from conduit explantation for pulmonary homograft was 100%, for diepoxy- and glutaraldehyde-treated xenopericardial conduits 99,20,7% and 84,74,7% respectively. Multivariable analysis identified the type of xenograft and age as independent factors for xenograft dysfunction. Results from this study show that the pulmonary homograft is the most preferred conduit for the RVOT reconstruction during the Ross procedure. The diepoxy-treated xenopericardial conduits are acceptable alternative to the homograft in patients older 45 years.

scholarly journals The morphology of the right ventricular outflow tract after percutaneous pulmonary valvotomy: long term follow up.

Heart ◽  
1987 ◽  
Vol 58 (3) ◽  
pp. 239-244 ◽  
Author(s):  
M Robertson ◽  
L N Benson ◽  
J S Smallhorn ◽  
N Musewe ◽  
R M Freedom ◽  
...  
Keyword(s):  
Right Ventricular ◽  
Right Ventricular Outflow Tract ◽  
Ventricular Outflow Tract ◽  
Outflow Tract ◽  
Long Term Follow Up ◽  
The Right

scholarly journals Mid-term outcomes of Contegra implantation for the reconstruction of the right ventricular outflow tract to proximal branch pulmonary arteries: Japan multicentre study

2021 ◽  
Author(s):  
Takaya Hoashi ◽  
Hajime Ichikawa ◽  
Keiichi Hirose ◽  
Naohiro Horio ◽  
Takahisa Sakurai ◽  
...  
Keyword(s):  
Risk Factor ◽  
Right Ventricular ◽  
Survival Rates ◽  
Pulmonary Arteries ◽  
Right Ventricular Outflow Tract ◽  
Ventricular Outflow Tract ◽  
Outflow Tract ◽  
Free Survival ◽  
The Right

Abstract OBJECTIVES To reveal the mid-term outcomes of Contegra implantation for the reconstruction of the right ventricular outflow tract to proximal branch pulmonary arteries in a multicentre study. METHODS Between April 2013 and December 2019, 178 Contegra conduits were implanted at 5 Japanese institutes. The median age and body weight at operation were 16 months (25th–75th percentile: 8–32) and 8.3 kg (6.4–10.6). Sixteen patients were neonates (9.0%). Selected conduit sizes were 12 mm in 28 patients (15.7%), 14 mm in 67 patients (37.6%), 16 mm in 66 patients (37.1%), 18 mm in 5 patients (2.8%) and <12 mm in 12 patients (6.7%). Fifty-six grafts (31.4%) were ring supported. Proximal branch pulmonary arteries were concomitantly augmented in 85 patients (47.5%). Follow-up was completed in all patients and the median follow-up period was 3.1 years (1.3–5.1). RESULTS The overall, conduit explantation-free and conduit infection-free survival rates at 5 years were 91.3%, 71.0% and 83.7%, respectively. Infection (P = 0.009) and common arterial trunk (P = 0.024) were risk factors for explantation. Conduit durability was shorter in smaller one (P < 0.001). Catheter interventions (for conduit to proximal branch pulmonary artery)-free survival rates at 5 years was 52.9%; however, need for catheter interventions was not a risk factor for conduit explantation. CONCLUSIONS Mid-term outcomes of reconstruction of the right ventricular outflow tract to the proximal branch pulmonary arteries with Contegra were acceptable. The need for explantation over time was higher in smaller conduits. Conduit infection was a strong risk factor for conduit explantation. Frequently and repeated catheter interventions effectively extended the conduit durability.

Sign in / Sign up

Export Citation Format

Share Document