The incidence of bronchial pulmonary dysplasia(BPD) to cured HMD was 25.9% and BPD was obviously related to gestational age, birth-weight.

• 治愈的HMD患儿支气管肺发育不良的发生率为 2 5 .；9%25；BPD的发生与胎龄、体重明显相关。