Neldam S
Am J Obstet Gynecol. 1982 Apr 1;142(7):867-9. doi: 10.1016/s0002-9378(16)32533-9.
A nomogram for fetal thoracic and abdominal amplitudes during respiration is presented. The correlation coefficient between the thoracic amplitude and gestational age was 0.973, and that for the abdominal amplitude was 0.920, thus suggesting a strong correlation between gestational age and respiratory amplitude (p less than 0.001), whereas no correlation was found between respiratory amplitude and fetal weight. The respiratory amplitudes were not influenced by intake of meals or time of the day when examination was carried out. The respiratory amplitudes were found to be very reproducible (SEM=0.1 mm, N=42). This new noninvasive method to predict the respiratory distress syndrome seems to be very promising.
本文展示了一张胎儿呼吸时胸腹部幅度的列线图。胸幅度与孕周的相关系数为0.973，腹幅度与孕周的相关系数为0.920，这表明孕周与呼吸幅度之间存在强相关性（p<0.001），而呼吸幅度与胎儿体重之间未发现相关性。呼吸幅度不受进餐摄入或检查当天时间的影响。发现呼吸幅度具有很高的可重复性（标准误=0.1毫米，N=42）。这种预测呼吸窘迫综合征的新无创方法似乎很有前景。
