The MitraClip System is the first commercially available catheter-based option for the treatment of MR. The MitraClip System was developed as an alternate percutaneous technology which may serve as a viable therapeutic option for open-heart surgery. Treatment with the MitraClip device allows patients to undergo a less invasive procedure that can mechanistically reduce MR and allow for improved quality of life. The MitraClip procedure is performed under general anesthesia without the use of a heart-lung machine, with recovery typically lasting two to three days.
Mitral regurgitation (MR) is the most common heart valve condition in the world. MR occurs when the mitral valve does not close properly, allowing blood to leak back into the upper chamber of the heart. As a result, the heart may try to pump harder in order to compensate for the decrease in blood flow to the rest of the body. Patients with severe MR suffer from debilitating symptoms such as shortness of breath, heart palpitations, lightheadedness, and fatigue. These patients are at risk of poor quality of life, marked limitation in activity, repeated heart failure hospitalizations, and increased mortality. Chronic severe MR is often associated with heart failure and can lead to death if left untreated. While mitral valve repair or replacement surgery is currently regarded as standard of care, many patients with clinically significant MR are at an unacceptable risk of morbidity and mortality and are therefore not appropriate surgical candidates. To optimize afterload reduction and treatment of fluid load, these patients are often treated with medical management (i.e., beta blockers, ACE inhibitors, angiotensin II receptor blockers) which may relieve MR symptoms, but does not address the underlying cause of the condition. As a result, a significant portion of patients treated medically continue to progress to heart failure and experience an increasingly debilitating quality of life. A significant unmet clinical need thus exists for the treatment of moderate-to-severe and severe MR in high surgical risk patients. The MitraClip System has been in clinical use for treatment of significant MR since 2003. The MitraClip System received CE (Conformité Européenne) Mark for both DMR and FMR indications in March 2008 and was approved by FDA for DMR indication in October 2013 and for FMR indication in March 2019. The system is approved for use in more than 102 countries or regions worldwide. More than 100,000 patients have undergone the MitraClip procedure worldwide. On June 15, 2020, the MitraClip System has been approved for clinical use in China.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
51
MitraClip procedure with MitraClip NTR System or MitraClip XTR System
Fuwai Hospital Chinese Academy of Medical Sciences
Beijing, Beijing Municipality, China
Xiamen Cardiovascular Hospital Xiamen University
Xiamen, Fujian, China
Fuwai Hospital Chinese Academy of Medical Sciences, Shenzhen
Shenzhen, Guangdong, China
The First Affiliated Hospital of Xi'an Jiaotong University
Xi'an, Shaanxi, China
Percentage of Participants With Acute Procedural Success (APS)
APS is defined as successful implantation of the MitraClip device(s) with resulting MR severity of 2+ or less as determined by the ECL assessment of a discharge echocardiogram (30-day echocardiogram will be used if discharge echocardiogram is unavailable or uninterpretable).
Time frame: Discharge/30days
Percentage of Participants With Freedom From Major Adverse Event (MAE)
A Major Adverse Event (MAE) was determined as the composite of death, stroke, myocardial infarction (MI), renal failure, and non-elective cardiovascular surgery for device- or procedure-related adverse events occurring after the femoral vein puncture for transseptal access.
Time frame: 30 days
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The 2nd Affiliated Hospital of Zhejiang University
Hangzhou, Zhejiang, China