Florido J, Cortés E, Soto V, Gutiérrez M
Department of Obstetrics and Gynecology, Escuela Universitaria de Ciencias de la Salud, University of Granada, Spain.
Ultrasound Obstet Gynecol. 1999 Aug;14(2):134-8. doi: 10.1046/j.1469-0705.1999.14020134.x.
In most recent studies, fetal respiratory movements have been measured with real-time and Doppler echography. We describe an alternative approach using photogrammetry that provides more objective measurements.
Respiratory movements were studied in 28 women with uncomplicated pregnancies of 30-38 weeks' gestation. Fetal echographic images were recorded on videotape and digitized to obtain coordinates of the reference point (midpoint on the anterior abdominal wall of the fetus between the xiphoid process and the insertion of the umbilical vessels) and generate graphic representations of fetal movements in the anterior abdomen.
The mean duration of a complete respiratory cycle was 1.194 s, the mean distance representing the extent of movement was 2.92 mm, the mean inspiratory velocity was 5.52 mm/s and the mean expiratory velocity was 5.06 mm/s.
Photogrammetric analysis of images obtained with real-time echography provided accurate measurements of fetal breathing movements.
在最近的研究中，已通过实时和多普勒超声检查来测量胎儿呼吸运动。我们描述了一种使用摄影测量法的替代方法，该方法能提供更客观的测量结果。
对28名妊娠30 - 38周、无并发症的孕妇的呼吸运动进行了研究。将胎儿超声图像录制在录像带上并进行数字化处理，以获取参考点（胎儿剑突与脐血管插入点之间前腹壁的中点）的坐标，并生成胎儿前腹部运动的图形表示。
一个完整呼吸周期的平均持续时间为1.194秒，代表运动范围的平均距离为2.92毫米，平均吸气速度为5.52毫米/秒，平均呼气速度为5.06毫米/秒。
对实时超声检查获得的图像进行摄影测量分析可准确测量胎儿呼吸运动。
