First-in-human transcatheter tricuspid valve repair in a patient with severely regurgitant tricuspid valve.
BACKGROUND
Severe tricuspid regurgitation is associated with poor prognosis; however, there are limited Class I indications for intervention, and high-surgical risk patients may go untreated. We report the first-in-human successful transcatheter tricuspid valve repair for severe tricuspid regurgitation.


OBJECTIVE
The objective of this study was to show the feasibility of a transcatheter tricuspid annular repair.


METHODS
Compassionate-use approval for the procedure was obtained from the regulatory organization in Germany. To perform the transcatheter bicuspidization of the tricuspid valve, the Mitralign system was used to place pledgeted sutures by means of a trans-jugular venous approach. Insulated radiofrequency wires were positioned 2 to 5 mm from the base of the posterior leaflet, 2.6 cm apart. The sutures were drawn together and locked, plicating the posterior annulus.


RESULTS
Reconstruction of the 3-dimensional transesophageal echocardiographic dataset at baseline revealed a tricuspid valve annular area of 14.1 cm(2), and effective regurgitant orifice area was 1.35 cm(2). There was a significant reduction in annular area (57%) and effective regurgitant orifice area (53%) measured with 3-dimensional transesophageal echocardiography, at 6.05 cm(2) and 0.63 cm(2), respectively. Hemodynamic parameters also improved with a reduction in right atrial pressure from 22 mm Hg at baseline, to 9 mm Hg and an increase in left ventricular stroke volume from 42 ml at baseline to 72 ml.


CONCLUSIONS
Transcatheter tricuspid valve repair could become an effective treatment for high-surgical risk patients who are non-responsive to optimal medical therapy.
Hamburg Universitary Cardiovascular Center, Hamburg, Germany.
Joachim
J
Schofer
Hamburg Universitary Cardiovascular Center, Hamburg, Germany.
Klaudija
K
Bijuklic
Hamburg Universitary Cardiovascular Center, Hamburg, Germany.
Claudia
C
Tiburtius
Hamburg Universitary Cardiovascular Center, Hamburg, Germany.
Lorenz
L
Hansen
Mitralign, Inc., Tewksbury, Massachusetts.
Adam
A
Groothuis
Columbia University Medical Center/New York Presbyterian Hospital and the Cardiovascular Research Foundation, New York, New York. Electronic address: rth2@columbia.edu.
Rebecca T
RT
Hahn
D000369:Aged, 80 and over; D006328:Cardiac Catheterization / Q000379:methods*; D058385:Cardiac Valve Annuloplasty / Q000379:methods; D019560:Echocardiography, Three-Dimensional / Q000379:methods; D017548:Echocardiography, Transesophageal / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D018570:Risk Assessment; D012720:Severity of Illness Index; D016896:Treatment Outcome; D014261:Tricuspid Valve / Q000000981:diagnostic imaging* / Q000503:physiopathology; D014262:Tricuspid Valve Insufficiency / Q000000981:diagnostic imaging / Q000628:therapy*
transcatheter; tricuspid regurgitation; valve repair