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目的了解新会区婴幼儿骨密度的现状,探讨影响婴幼儿骨密度的因素。方法对7863名在儿保门诊健康体检的婴幼儿用超声骨强度仪测胫骨中段骨密度,通过电脑中儿童参考数据库自动计算出骨密度Z值。结果婴幼儿骨密度不足的发生率为42.6%,随着年龄的增长,骨密度不足的发生率逐渐降低;女童骨密度不足发生率高于男童;骨密度不足发生率以春季最高,夏季最低;不同年龄、性别和季节骨密度的差异有统计学意义(P<0.05)。结论 0-6个月是骨密度不足的高发年龄,应从孕期及新生儿期及早合理补充维生素D和钙,坚持户外活动,特别是春季,重视体育锻炼。
Objective To understand the status of infant bone mineral density in Xinhui District and to explore the factors affecting the bone mineral density in infants and young children. Methods Totally 7863 infants and toddlers undergoing physical examination in infants and young children were examined by means of ultrasonic bone strength for the middle part of the tibia. The Z value of the bone mineral density was calculated automatically from the reference database of children in the computer. Results The incidence of under-BMD in infants and young children was 42.6%. The incidence of BMD decreased with age. The incidence of under-BMD in girls was higher than that of boys. The incidence of BMD was the highest in spring and the lowest in summer There was significant difference in bone mineral density between different age, sex and season (P <0.05). Conclusions 0-6 months is the high incidence of bone mineral density deficiency. Vitamin D and calcium should be added as early as possible during pregnancy and neonatal period. Persistence in outdoor activities, especially in spring, should be emphasized.