Kuban K C, Skouteli H N, Urion D K, Lawhon G A
Department of Neurology, Children's Hospital, Boston, MA 02115.
Pediatr Neurol. 1986 Sep-Oct;2(5):266-71. doi: 10.1016/0887-8994(86)90017-2.
Ten classic deep tendon reflexes (DTRs) were evaluated in 62 premature infants of greater than 27 weeks post-conceptional age. The pectoralis major was the most readily elicitable reflex in all infants (100%), regardless of maturity. Achilles, patellar, biceps, thigh adductors, and brachioradialis reflexes also were obtained in at least 98% of babies of greater than 33 weeks gestation. Among these reflexes, less mature infants (less than 33 weeks gestation) had decreased elicitation rates for patellar and biceps reflexes and overall had diminished reflex intensity when compared to older infants (33-36 weeks gestation). By order of decreasing rate, finger flexors, jaw, crossed adductors, and triceps reflexes were less frequently elicited in both groups. Equal DTRs were obtained often in healthy and previously ill infants of less than 33 weeks gestation. Head position had no apparent affect on the ability to elicit reflexes. Theophylline therapy tended to intensify the Achilles reflex and the quiet, wakeful state appeared to be the most optimal state for the elicitation of DTRs.
对62名孕龄大于27周的早产儿进行了10项经典的深部腱反射（DTR）评估。在所有婴儿中（100%），胸大肌反射是最容易引出的反射，与成熟度无关。在至少98%的孕龄大于33周的婴儿中也获得了跟腱、髌、肱二头肌、大腿内收肌和肱桡肌反射。在这些反射中，与较大婴儿（孕龄33 - 36周）相比，较不成熟的婴儿（孕龄小于33周）髌反射和肱二头肌反射的引出率降低，总体反射强度减弱。按引出率递减顺序，两组中手指屈肌、下颌、交叉内收肌和肱三头肌反射引出频率较低。孕龄小于33周的健康婴儿和曾患病婴儿常获得相同的DTR。头部位置对引出反射的能力无明显影响。茶碱治疗倾向于增强跟腱反射，安静、清醒状态似乎是引出DTR的最佳状态。
