Fig. 4From: The clinical course of Duchenne muscular dystrophy in the corticosteroid treatment era: a systematic literature reviewMeasures of functional status over time: a–d pulmonary function measures; e–g cardiac function measures. PEF = peak expiratory flow; FVC = forced vital capacity; SF = shortening fraction; LVED = left ventricular end-diastolic dimension; EF = ejection fraction. Notes a = HR in the upper quartile (> 96 BPM), b = HR in the lower quartile (≤ 96 BPM), c = Left ventricular dysfunction, d = No Left ventricular dysfunctionBack to article page