Comparison of echocardiographic parameters in patients with normal versus elevated C3c values. There is a trend towards smaller diastolic ( mm versus mm; ) and systolic ( mm versus mm; ) diameter of the left ventricle and higher left ventricular ejection fraction (% versus %; ) in patients with elevated complement C3c. LVDd, diastolic left ventricular diameter; LVDs, systolic left ventricular diameter; LVEF, left ventricular ejection fraction.