00:00-00, 2026. OBJECTIVE: To determine the correlation between total uterine artery flow (UtAQ) at the end of the first trimester of pregnancy and birth weight (BW) at term at 3,400 m altitude. METHODS: Prospective study, conducted at 3,400 m altitude in 210 women who underwent routine ultrasound evaluation. The inclusion criteria were singleton pregnancy between 11 and 14 weeks + 1 day, crown-rump length between 45 and 84 mm, born and raised at high altitude (native), and without pathology. The outcome was BW, expressed as a Z score. Variables such as UtAQ, uterine artery (UtA) diameters, age, body mass index, and mean arterial pressure, among others, were evaluated. RESULTS: = 0.006). CONCLUSION: In low-risk singleton pregnancies among native women living at high altitude, a correlation was observed between UtAQ and term BW, with the highest association found between BW and the diameter and UtAQ of the left UtA.
Villamonte‐Calanche et al. (Fri,) studied this question.