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Effect of QRS Narrowing After Cardiac Resynchronization Therapy on Functional Mitral Regurgitation in Patients With Systolic Heart Failure

Heart FailureDevice TherapyCardiovascular DiseaseSystolic Heart FailureCardiac Resynchronization TherapyQrs NarrowingCardiac CareValvular Heart DiseasePublic HealthMedicineCardiologyDiastolic FunctionAnesthesiology