TricValve Transcatheter Bicaval Valves System – Interventional cardiologists at Cleveland Clinic have successfully completed the first implantation in North America
Reporter: Aviva Lev-Ari, PhD, RN
UPDATED on 7/22/2022
Cardiothoracic surgeons at UC San Francisco performed the first robotically assisted mitral valve prolapse surgery in San Francisco.
Reporter: Aviva Lev-Ari, PhD, RN
The Patient for this historic procedure:
An 82-year-old man presenting with severe symptomatic tricuspid regurgitation (TR) and right heart failure (RHF).
Expert Opinion: The Voice of Dr. Justin D. Pearlman, MD, PhD, FACC
The TricValve addresses the problem of severe ìncompetance of the tricuspid valve with a relatively simple procedure.
Instead of the challenge of replacing the defective valve, a catheter procedùre places valves at the two venous intake locations, the superior and ìnferior vena cava. A valve at the superior vena cava entrance to the right atrium occurs occasionally in nature, but is usually absent or fenestrated, covering the medial end if the crista supraventricularis.
A similar termed valve is occasionally found in nature on the inferior vena cava. These supernumerary valves can arrest back flow of pressure and volume from the right atrium to the upper and lower venous systems, and alleviate in particular congestion of the liver.
Normally the right atrial pressure is low, in which case this would offer no significant advantage for reproductive success natural selection to offset potential interference with blood flow into the right atrium that might promote thrombosis [Folia Morphology Morphology 66(4):303-6, MRuso].
However, in a setting of right heart failure, such as occurs from pulmonary hypertension, the tricuspid valve often becomes incompetent, and placement of the pair of vena cava valves can alleviate upstream consequences, albeit at the cost of risk of thrombosis and future impediment to other future procedures such as ablation of supraventricular arrhythmia.
The vena cava valves placed by catheter at the Cleveland Clinic helped an 80 year old man alleviate his pressing issue of hepatic congestion. Unlike a replacement tricuspid valve this procedure does not alleviate high pressures dilatìng the right atrium. Instead, it can worsen that problem.
The CLASP II TR trial is investigating the Edwards PASCAL transcatheter repair system [CLASP II TR, Edwards Lifesciences Corp, NIH NCT 0497145]
The first implantation in North America: TricValve Transcatheter Bicaval Valves System
The structural heart procedure occurred in February 2022.
Rishi Puri, MD, PhD, an interventional cardiologist with Cleveland Clinic, and Samir Kapadia, MD, chair of cardiovascular medicine at Cleveland Clinic, performed the procedure. Puri has years of experience with the TricValve system, participating in a thorough analysis of its safety and effectiveness in 2021.
The TricValve system features two biological valves designed to be implanted via femoral vein access into the patient’s superior vena cava and inferior vena cava. This allows a therapy without impacting the patient’s native tricuspid valve. It is available in multiple sizes, allowing cardiologists to choose the best option for each individual patient.
Cleveland Clinic’s statement detailing the successful procedure notes that patients with severe TR and RHF have typically had limited treatment options. Tricuspid valve surgery is associated with significant risks, for instance, and prescribing diuretics is problematic when the patient also presents with kidney problems.
“TricValve can potentially provide an effective and low-risk solution for many patients who currently have no treatment options,” Puri said, adding that the workflow is quite similar to transcatheter aortic valve replacement.
The TricValve Transcatheter Bicaval Valves System was developed by P+F Products + Features GmbH, a healthcare technology company based out of Vienna, Austria. The solution was granted the FDA’s Breakthrough Device designation in December 2020, but it has still not gained full FDA approval.
This procedure was completed under a compassionate-use clearance from the FDA.
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