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Macrophage MST1/2 Disruption Impairs Post-Infarction Cardiac Repair via LTB4 A Randomized Trial to Assess Regional Left Ventricular Function After Stent Implantation in Chronic Total Occlusion The REVASC Trial Burden of 30-Day Readmissions After Percutaneous Coronary Intervention in 833,344 Patients in the United States: Predictors, Causes, and Cost Percutaneous coronary intervention using a combination of robotics and telecommunications by an operator in a separate physical location from the patient: an early exploration into the feasibility of telestenting (the REMOTE-PCI study) A Novel Algorithm for Treating Chronic Total Coronary Artery Occlusion Frequency, Regional Variation, and Predictors of Undetermined Cause of Death in Cardiometabolic Clinical Trials: A Pooled Analysis of 9259 Deaths in 9 Trials Long-Term Effect of Ultrathin-Strut Versus Thin-Strut Drug-Eluting Stents in Patients With Small Vessel Coronary Artery Disease Undergoing Percutaneous Coronary Intervention: A Subgroup Analysis of the BIOSCIENCE Randomized Trial Biolimus-A9 polymer-free coated stent in high bleeding risk patients with acute coronary syndrome: a Leaders Free ACS sub-study Transverse partial stent ablation with rotational atherectomy for suboptimal culotte technique in left main stem bifurcation Percutaneous Support Devices for Percutaneous Coronary Intervention

Review Article2020 Dec 18;S0828-282X(20)31146-6.

JOURNAL:Can J Cardiol. Article Link

Pathophysiology, diagnosis and new therapeutic approaches for ischemic mitral regurgitation

S Hadjadj, O Marsit, J-M Paradis et al. Keywords: ischemic mitral regurgitation; diagnosis; therapy

ABSTRACT

Ischemic mitral regurgitation is a valvular complication frequently seen in patients with coronary artery disease and associated with increased mortality and morbidity. Ischemic mitral regurgitation has a complex, heterogeneous and still incompletely understood pathophysiology involving both the mitral valve and the left ventricle. The occurrence of valve regurgitation in patients with ischemic cardiomyopathy will in return accelerate left ventricular remodeling and dysfunction, ultimately leading to irreversible heart failure. Diagnostic evaluation of ischemic mitral regurgitation is unique and different from the other causes of mitral regurgitation. The severity thresholds associated with outcomes are different from primary MR, and specific imaging characteristics are potentially useful to guide therapy. The use of imaging modalities such as 3D echocardiography and cardiac MRI can refine the diagnostic evaluation and help to choose the correct management. While multiple treatments are available to improve ischemic mitral regurgitation, each therapeutic option is associated with limitations and incomplete success. Therapy has therefore to be individualized for each patient. Current options include optimal medical therapy, cardiac resynchronization, percutaneous or surgical revascularization, surgical mitral repair or replacement and new percutaneous interventions. The current manuscript aims to discuss the last insights on the pathophysiology, diagnosis and treatments of ischemic mitral regurgitation.
Mitral regurgitation (MR) is a frequent disease with significant morbidity 
 
. There are multiple causes to MR, each with their own management strategies. Secondary (or functional) MR occurs in response to a primary left ventricle (LV) disease and currently represents a formidable therapeutic challenge. While clearly associated with adverse prognosis, few treatments have been shown to influence clinical outcomes in this population. Most data for secondary MR are derived from patients with ischemic heart disease, in which case the term ischemic MR is used. Ischemic MR has a complex physiology involving both the LV and the mitral leaflets. Multiple characteristics are making the diagnostic evaluation and treatment of ischemic MR unique and distinct from the other causes of MR.