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Updated: Jul 21, 2025

A Simplified Stepwise Approach to Echo Guidance during Percutaneous Mitral Valve Repair
Published on: October 16, 2021
Transcatheter edge-to-edge repair for mitral regurgitation using PASCAL or MitraClip
Ayman Elbadawi1, Alexander T Dang2, Mohamed Hamed3
1Division of Cardiology, University of Texas Southwestern Medical Center, Dallas, Texas, USA.
Background:
There is a paucity of data regarding the comparative efficacy and safety of Mitral valve transcatheter edge-to-edge repair (MTEER) using the PASCAL or MitraClip systems for patients with mitral regurgitation (MR).
Methods:
An electronic search was conducted for MEDLINE, COCHRANE, and EMBASE, through February 2023, for studies comparing the clinical outcomes of MTEER using PASCAL versus MitraClip systems among patients with severe MR. The primary study outcome was residual MR ≤ 2 at discharge. Data were pooled using a random-effects model.
Results:
The final analysis included six studies with a total of 1581 patients, with a weighted follow-up period of 3.5 months. Two studies only included patients with degenerative MR, while the remaining studies included both degenerative and functional MR. There was no significant difference in procedure duration between MTEER with the PASCAL or MitraClip systems. There was no difference in residual MR ≤ 2 at discharge (94.7% vs. 91.9%; odds ratio [OR]: 1.44; 95% confidence interval [CI]: 0.92-2.27) or residual MR ≤ 2 at the mid-term follow-up (94.6% vs. 91.0%, p = 0.05) among the PASCAL versus MitraClip systems. There was no difference between both groups in residual MR ≤ 1 at discharge (73.1% vs. 63.8%, p = 0.12), while there was greater incidence of residual MR ≤ 1 at midterm follow-up with the PASCAL system (71.3% vs. 56.2%, p < 0.001). There was no difference between the PASCAL and MitraClip MTEER systems in technical success (97.0% vs. 97.9%, p = 0.15), procedural success (89.1% vs. 87.1%, p = 0.78), single leaflet detachment (1.8% vs. 1.4%, p = 0.55), or all-cause mortality (3.6% vs. 4.6%, p = 0.71).
Conclusion:
In this meta-analysis, we demonstrated comparable efficacy and safety between the PASCAL and MitraClip MTEER systems at short- and mid-term assessments. Randomized trials are warranted to evaluate the comparative long-term outcomes between both MTEER systems.
Insights
Mitral valve transcatheter edge-to-edge repair (MTEER) using PASCAL or MitraClip systems shows similar short-term efficacy and safety for mitral regurgitation. Further randomized trials are needed to assess long-term outcomes of these MTEER devices.
Area of Science:
- Interventional Cardiology
- Medical Devices
- Cardiovascular Surgery
Background:
- Limited comparative data exists for Mitral valve transcatheter edge-to-edge repair (MTEER) devices, specifically the PASCAL and MitraClip systems, in treating mitral regurgitation (MR).
- Understanding the comparative efficacy and safety profiles of these MTEER systems is crucial for clinical decision-making.
Approach:
- A comprehensive electronic literature search was performed across MEDLINE, COCHRANE, and EMBASE databases up to February 2023.
- Six studies encompassing 1581 patients with severe MR were included in a random-effects model meta-analysis.
- The primary outcome assessed was residual MR ≤ 2 at discharge, with secondary outcomes including procedural success and adverse events.
Key Points:
- No significant differences were observed in residual MR ≤ 2 at discharge or mid-term follow-up between PASCAL and MitraClip systems.
- While residual MR ≤ 1 at discharge was similar, the PASCAL system showed a greater incidence of residual MR ≤ 1 at mid-term follow-up.
- Technical success, procedural success, single leaflet detachment, and all-cause mortality rates were comparable between the two MTEER systems.
Conclusions:
- The meta-analysis indicates comparable short- and mid-term efficacy and safety between the PASCAL and MitraClip MTEER systems.
- Randomized controlled trials are necessary to definitively evaluate and compare the long-term clinical outcomes of these leading MTEER devices.
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