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Acute and Midterm Outcomes of Transcatheter Pulmonary Valve Replacement for Treatment of Dysfunctional Left Ventricular Outflow Tract Conduits in Patients With Aortopulmonary Transposition and a Systemic Right Ventricle
Journal article   Open access   Peer reviewed

Acute and Midterm Outcomes of Transcatheter Pulmonary Valve Replacement for Treatment of Dysfunctional Left Ventricular Outflow Tract Conduits in Patients With Aortopulmonary Transposition and a Systemic Right Ventricle

Wendy Whiteside, Justin T Tretter, Jamil Aboulhosn, Osamah Aldoss, Aimee K Armstrong, Martin L Bocks, Matthew J Gillespie, Thomas K Jones, Mary Hunt Martin, Jeffrey J Meadows, …
Circulation. Cardiovascular interventions, Vol.10(9), e004730
09/2017
DOI: 10.1161/CIRCINTERVENTIONS.116.004730
PMID: 28851718
url
https://doi.org/10.1161/CIRCINTERVENTIONS.116.004730View
Published (Version of record) Open Access

Abstract

Transcatheter pulmonary valve replacement (TPVR) is an established therapy for dysfunctional right ventricular (RV) outflow tract conduits. TPVR in patients with congenitally corrected transposition of the great arteries, subpulmonary left ventricle, and left ventricular outflow tract (LVOT) conduit dysfunction has not been studied. Unique anatomic and physiological aspects of this population may contribute to distinct risks and outcomes. Across 10 US centers, 27 patients with a dysfunctional LVOT conduit were evaluated in the catheterization laboratory between December 2008 and August 2015 with the intent to perform TPVR. TPVR was successful in 23 patients (85%). Five serious adverse events occurred in 4 cases (15%), including pulmonary hemorrhage, hypotension requiring vasoactive support, conduit disruption requiring covered stent (n=2), and acute RV dysfunction with flash pulmonary edema. After TPVR, the LVOT peak systolic ejection gradient decreased from median of 35 to 17 mm Hg ( <0.001); pulmonary insufficiency was trivial/none in all but 1 patient, where it was mild. Worsening of systemic RV dysfunction or tricuspid regurgitation was seen in 12 patients (57%) and was associated with a significantly lower post-TPVR LVOT peak systolic ejection gradient (median 17 versus 21 mm Hg; =0.02) and higher post-TPVR RV sphericity index (median 0.88 versus 0.52; =0.004). Post-TPVR, there were 2 late deaths because of RV failure and 1 cardiac transplantation because of progressive RV dysfunction and tricuspid regurgitation. TPVR in dysfunctional LVOT conduits is feasible but associated with an important rate of TPV nonimplantation and procedural serious adverse events. Worsening systemic RV function and tricuspid regurgitation may develop after LVOT TPVR.
United States Feasibility Studies Heart Valve Prosthesis Implantation - instrumentation Postoperative Complications - etiology Pulmonary Valve Insufficiency - physiopathology Ventricular Function, Left Pulmonary Valve - diagnostic imaging Humans Middle Aged Bioprosthesis Male Blood Vessel Prosthesis Cardiac Catheterization - mortality Prosthesis Design Heart Ventricles - diagnostic imaging Recovery of Function Young Adult Transposition of Great Vessels - diagnostic imaging Blood Vessel Prosthesis Implantation - adverse effects Time Factors Adult Female Retrospective Studies Child Pulmonary Valve Insufficiency - diagnostic imaging Transposition of Great Vessels - physiopathology Transposition of Great Vessels - mortality Pulmonary Valve - physiopathology Blood Vessel Prosthesis Implantation - instrumentation Heart Valve Prosthesis Risk Factors Cardiac Catheterization - adverse effects Heart Valve Prosthesis Implantation - mortality Treatment Outcome Blood Vessel Prosthesis Implantation - mortality Cardiac Catheterization - instrumentation Pulmonary Valve - surgery Heart Ventricles - abnormalities Heart Ventricles - physiopathology Heart Valve Prosthesis Implantation - adverse effects Adolescent Heart Ventricles - surgery Pulmonary Valve Insufficiency - surgery Pulmonary Valve Insufficiency - mortality Transposition of Great Vessels - surgery Ventricular Function, Right

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