Lin Yanting, Yan Ruiling, He Andong, Chen Jie, Li Ruiman
Obstetrics and Gynecology, The First Affiliated Hospital of Jinan University, Guangzhou, CHN.
Obstetrics and Gynecology, The Affiliated Shunde Hospital of Jinan University, Guangzhou, CHN.
Cureus. 2023 Dec 29;15(12):e51273. doi: 10.7759/cureus.51273. eCollection 2023 Dec.
Single umbilical artery (SUA) may be associated with adverse pregnancy outcomes, such as fetal death, emergency cesarean section, premature delivery, small-for-gestational-age infants, and admission to neonatal intensive care unit, and some SUAs are transformed from originally double umbilical arteries (UA). The pulsatility index (PI) can reflect the resistance of UA, and clinicians attach importance to high PI but easily overlook low levels of it. We reported one case of a pregnant woman who underwent double to single UA accompanied by low UA-PI and finally had intrauterine fetal death. Additionally, the literature regarding SUA and UA-PI is reviewed. This study aims to alert clinicians to the risk of double-to-single UA with low UA-PI and strengthen fetal monitoring and timely intervention. We look forward to more clinical evidence to investigate it.
单脐动脉（SUA）可能与不良妊娠结局相关，如胎儿死亡、急诊剖宫产、早产、小于胎龄儿以及入住新生儿重症监护病房，并且一些SUA是由原本的双脐动脉（UA）转变而来。搏动指数（PI）可反映UA的阻力，临床医生重视高PI但容易忽视低PI情况。我们报告了1例孕妇，其UA从双变单并伴有低UA-PI，最终发生宫内胎儿死亡。此外，对关于SUA和UA-PI的文献进行了综述。本研究旨在提醒临床医生注意UA从双变单且伴有低UA-PI的风险，加强胎儿监测并及时干预。我们期待有更多临床证据对此进行研究。
