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按照X线片心胸比小于0.40;心脏阴影横径小于12cm;超声心动图左室舒张末内径小于4.2cm;γ-核素心排血指数小于3.0mm/cm,被诊断为小心脏之飞行员10例(丙组),与心脏正常而立位耐力不正常之飞行员(乙组)和心脏正常,立位耐力也正常之飞行员(甲组)比较,在立位耐力试验中从站立即刻起,丙组心率
According to X-ray cardiothoracic ratio less than 0.40; heart shadow diameter less than 12cm; echocardiography left ventricular end-diastolic diameter less than 4.2cm; γ-radionuclide ventricular ejection index less than 3.0mm / cm, was diagnosed with a small heart pilot 10 (Group C), pilots (Group B) with normal heart rate and abnormal standing endurance (Group B) and pilots with normal heart and standing endurance (Group A) compared with those with standing endurance test, Group C Heart rate