Tiêu đề 03.Vai trò của trục tim thai.pdf ✅

VAI TRÒ CỦA TRỤC TIM THAI TRONG TẦM SOÁT BTBS THAI NHI Ts. Bs. Lê Kim Tuyến Bv Tim Tâm Đức
Trục tim thai nên đo ở thời điểm nào? a. Bất kỳ thời điểm nào b. Cuối tâm thu c. Cuối tâm trương

Objective The purpose of this study was to establish normal fetal cardiac axis values during the first and early second trimesters of pregnancy. Methods This was a prospective observational cohort study in which the fetal cardiac axis was assessed during ultrasound examinations in 100 consecutive fetuses between 11 + 0 and 14 + 6 weeks of gestation. Transabdominal, and, when indicated, transvaginal, approaches were used. Intraobserver and interobserver reproducibility were calculated. Results The cardiac axis ranged from 34.5 to 56.8◦ (mean (SD) 47.6 ± 5.6◦) in 94 fetuses with normal cardiac anatomy. The fetal cardiac axis tended to be significantly higher in fetuses at 11 + 0to11+ 6 weeks of gestation than in fetuses at 12 + 0to 14+ 6 weeks of gestation. Congenital heart defects were found in six out of 100 fetuses, four of which had abnormal cardiac axis values at 11 + 0to14+ 6 weeks of gestation. Conclusion Cardiac axis measurement is possible in the first and early second trimesters of pregnancy. The assessment of cardiac axis at an early gestational age may help to identify pregnancies at high risk for congenital heart defects.