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Alternative methods to overcome the challenging anatomy of the coronary sinus during percutaneous mitral annuloplasty procedure.

ABSTRACT:

SUBMITTER: Gormel S

PROVIDER: S-EPMC8654014 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Coronary sinus-based percutaneous annuloplasty as treatment for functional mitral regurgitation: the TITAN II trial.

Project description:ObjectiveFunctional (or secondary) mitral regurgitation (FMR) is associated with greater morbidity and worse outcomes in patients with congestive heart failure (CHF) and cardiomyopathy. The Carillon® Mitral Contour System® is a coronary sinus-based percutaneous therapy to reduce FMR. We evaluated the safety and efficacy of a modified version of the Carillon device in the treatment of patients with cardiomyopathy and FMR.Methods36 patients with CHF, depressed left ventricular function (ejection fraction <40%) and at least moderate FMR underwent the Carillon device implant.ResultsThere was 1 major adverse event within 30 days-a death (not device related)-occurring 17 days after the implant. Reductions in FMR and improvements in functional class and 6 min walk tests were seen, similar to prior studies. Device fractures in the high strain region of the proximal anchor (seen in prior studies) were not seen in this study.ConclusionsThe modified Carillon device was associated with improvements in clinical and echocardiographic parameters in treating patients with FMR, while successfully addressing the issue of anchor fracture. This version of the Carillon device will be used in a blinded randomised trial of symptomatic patients with FMR.

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Transesophageal echocardiography guidance of percutaneous mitral valve replacement in failed annuloplasty ring: A case report.

Project description:Severe mitral regurgitation and stenosis due to failed mitral annuloplasty ring can be managed with percutaneous mitral valve in ring in high surgical risk patients. A 66-year-old male underwent coronary artery bypass surgery and mitral valve ring annuloplasty 7 years previously. He started to have shortness of breath with minimal effort in the past 2 years. Transthoracic echocardiogram revealed a new severe mitral regurgitation and severe mitral stenosis. The patient was turned down from surgery due to high surgical risk. The transcatheter mitral valve in ring implantation was decided. In this case, there was a low probability of left ventricular outflow tract obstruction. A stiff wire crossed the mitral valve ring and positioned in the left ventricular apex. The Sapien 3 valve size 26 mm (Edwards Lifesciences, Irvine, CA, USA) was positioned to have 80% ventricular and 20% atrial side. Transesophageal echocardiogram evaluation revealed a mean gradient of 5 mmHg. The left ventricular outflow tract (LVOT) had laminar color flow and the mean pressure gradient across LVOT was 1 mmHg. The patient was discharged after 2 days in good condition. At one year follow up, he had no shortness of breath and no rehospitalization. In conclusion, the percutaneous mitral valve in ring is feasible in selected patients. The risk of LVOT obstruction should be assessed carefully before the procedure with a transthoracic and transesophageal echocardiogram. 〈Learning objective: Understand how to guide the mitral valve in ring procedure with a transesophageal echocardiogram and how to avoid left ventricular outflow tract obstruction. Understand how to position the Sapien valve in mitral valve ring.〉.

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Project description:Patients with functional, or secondary, mitral regurgitation (FMR, SMR) often face significant symptoms that lead to functional decline as well as hospitalization and even death. Traditional mitral annuloplasty is an important treatment option for patients with FMR, but surgical risk and durability are important limitations. Percutaneous strategies are therefore a welcome alternative. The Carillon device utilizes the relationship of the coronary sinus and the mitral annulus to effect an "indirect" annuloplasty. Early series' and recent randomized trials suggest echocardiographic and clinical benefit with a relatively straight-forward implantation technique and low rate of significant complications.

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