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Acute effect of percutaneous MitraClip therapy in patients with haemodynamic decompensation
Simon Biner1, Robert J Siegel, Ted Feldman
1Cedars-Sinai Heart Institute, Los Angeles, CA 90048, USA.
Insights
MitraClip therapy improved cardiac index in patients with low baseline cardiac index (CI). The treatment also reduced left ventricular end-diastolic pressure and pulmonary artery pressure in patients with elevated baseline values.
Area of Science:
- Cardiology
- Interventional Cardiology
- Cardiac Surgery
Background:
- MitraClip therapy is a treatment for mitral regurgitation.
- Hemodynamic decompensation is a serious complication of heart disease.
- Assessing the hemodynamic effects of MitraClip is crucial for patient management.
Purpose of the Study:
- To evaluate the hemodynamic effects of acute procedural success (APS) following MitraClip therapy.
- To identify patient subgroups that benefit most from MitraClip regarding hemodynamic improvement.
Main Methods:
- Retrospective analysis of 107 patients undergoing MitraClip implantation.
- Assessment of hemodynamic parameters including cardiac index (CI), left ventricular end-diastolic pressure (LVEDP), pulmonary capillary wedge pressure (PCWPm), and pulmonary artery pressure (PAPm).
- Comparison of hemodynamic changes between patients with and without decompensation, and stratified by baseline values.
Main Results:
- 79 patients achieved acute procedural success (APS).
- Significant increase in CI observed in patients with low baseline CI (2.0 to 2.5 L/min/m²).
- Significant reductions in LVEDP, PCWPm, and PAPm were noted in patients with elevated baseline values, particularly in those with decompensation.
Conclusions:
- MitraClip therapy demonstrates favorable hemodynamic effects, notably improving CI in patients with pre-existing low CI.
- The therapy effectively reduces left-sided filling pressures and pulmonary artery pressure in patients with elevated baseline values, especially those experiencing decompensation.
Aims:
To evaluate the haemodynamic effect of acute procedural success (APS) after MitraClip therapy in patients with haemodynamic decompensation.
Methods And Results:
Of 107 patients, 79 achieved APS after MitraClip implantation. The increase in cardiac index (CI) was primarily detected in patients with a low baseline CI (2.0 ± 0.5 to 2.5 ± 5 L/min/m(2), P < 0.001). There was a decrease in left ventricular end-diastolic pressure (LVEDP) (20 ± 5 to 13 ± 5 mmHg, P = 0.002) and mean pulmonary capillary wedge pressure (PCWPm) (20 ± 4 to 16 ± 5 mmHg, P = 0.001) in patients with values >15 mmHg at baseline, and a decrease in mean pulmonary artery systolic (PAPm) (36 ± 4 to 29 ± 7 mmHg P = 0.003) in those with values >30 mmHg before the MitraClip procedure. Patients with decompensation compared with patients with compensation experienced significant reduction in LVEDP (-8.3 ± 11.9 mmHg vs. -0.2 ± 4.5 mmHg, P = 0.009), a reduction in PCWPm (-3.5 ± 5.6 mmHg vs. 1.9 ± 4.7 mmHg, P < 0.001), and a reduction in PAPm (-8 ± 9 mmHg vs. 3 ± 6 mmHg, P < 0.001).
Conclusion:
The favourable haemodynamic effects of MitraClip therapy on CI were primarily detected in patients with low CI before the procedure, and improvements in left-sided filling pressure and PAP were primarily seen in those with elevated values at baseline.
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