Question:  Cardiac contractility modulation a treatment for patients with moderate to severe left ventricular systolic heart failure and is delivered by a medical device which uses electrical impulses, delivered by electrodes contracting the heart muscles, to regulate what?
Sentence (from "Diastolic function"): Parallel to "diastolic function", the term "systolic function" is usually referenced in terms of the left ventricular ejection fraction (LVEF), which is the ratio of stroke volume and end-diastolic volume.
Relevant evidence: No