产时超声在第二产程延长中对分娩方式的指导及对母婴结局的影响
魏婧 董晓超 刘蓉 吕筱筠

Effect of intrapartum ultrasound on the guidance of delivery mode and maternal and infant outcome in the extension of the second stage of labor

WEI Jing, DONG Xiaochao, LIU Rong, LÜ Xiaoyun.
实用医学杂志 . 2022, (14): 1798 -1803 .  DOI: 10.3969/j.issn.1006⁃5725.2022.14.016