Amniotic Fluid Index (AFI) Normal Range at 29 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 key parameters fall within normal ranges. So, what is the normal amniotic fluid index (AFI) at 29 weeks of gestation?

Normal Amniotic Fluid Index (AFI) at 29 Weeks’ Gestation

At 29 weeks, the normal AFI range is 8–18 cm. Minor fluctuations within this range are considered acceptable. An AFI below 8 cm indicates oligohydramnios (low amniotic fluid), whereas an AFI above 18 cm suggests polyhydramnios (excess amniotic fluid). When amniotic fluid volume falls outside the normal range, further evaluation is warranted to identify potential underlying causes.

At 29 weeks—approximately seven and a half months into pregnancy—the pregnancy is classified as “late term” but not yet full-term (which begins at 37 weeks). This period remains a phase of rapid fetal growth and development. During this time, amniotic fluid volume is typically adequate. Two primary ultrasound parameters reflect amniotic fluid volume: the maximum vertical pocket (MVP) depth and the amniotic fluid index (AFI). The AFI is calculated by dividing the uterine cavity into four quadrants using horizontal and vertical lines intersecting at the uterine fundus. The deepest vertical pocket of amniotic fluid in each quadrant is measured (in centimeters), and the four measurements are summed to obtain the AFI.

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