Amniotic Fluid Index (AFI) Normal Range at 23 Weeks of Gestation

In daily life, many individuals experiencing their first pregnancy are unfamiliar with fundamental reproductive health knowledge. To better assess maternal and fetal well-being, it is essential to confirm that certain parameters fall within normal ranges. So, what is the normal amniotic fluid index (AFI) at 23 weeks of gestation?

Normal Amniotic Fluid Index at 23 Weeks’ Gestation

At 23 weeks, the normal AFI typically ranges from 8 to 22 cm. Assessment of oligohydramnios (low amniotic fluid) or polyhydramnios (excess amniotic fluid) is generally based on the absolute volume of amniotic fluid. Specifically: 1. Oligohydramnios is defined as an amniotic fluid volume < 300 mL; 2. Polyhydramnios is defined as an amniotic fluid volume > 2000 mL.

During the second trimester, the AFI normally falls between 8 and 22 cm. The AFI is also a key indicator for evaluating whether amniotic fluid volume is within normal limits. AFI measurement relies primarily on ultrasound imaging. Polyhydramnios is commonly associated with maternal diabetes mellitus, fetal congenital anomalies, and twin pregnancies. In such cases, dynamic monitoring is recommended to closely track amniotic fluid changes during the second trimester—specifically observing whether fluid volume increases or decreases over time. Additionally, after reducing intake of high-sugar foods, clinicians should monitor whether polyhydramnios improves in diabetic patients and carefully observe fluctuations in the patient’s AFI.

During pregnancy, it is advisable to avoid spicy, heavily seasoned, or irritating foods, and instead consume more fresh fruits and vegetables. Maintain regular work and rest schedules, avoid excessive physical exertion, focus on healthy fetal development, and attend all scheduled prenatal check-ups. We hope this information proves helpful!