What is the normal biparietal diameter at 34 weeks of pregnancy?

Apr 19, 2023 Source: Cainiu Health

Dr. Lv Aiming

Introduction

At 34 weeks of pregnancy, the fetal biparietal diameter (BPD) is normally within the range of 8.43 cm to 8.65 cm. The detailed explanation is as follows: During pregnancy, women undergo ultrasound monitoring to assess fetal growth and development. Among these assessments, the fetal biparietal diameter is an important measurement parameter, primarily used to evaluate the development of the fetal brain. Specifically, it refers to the transverse diameter between the two parietal bones of the fetal skull.

At 34 weeks of pregnancy, the fetal biparietal diameter (BPD) is typically considered normal if it ranges between 8.43 cm and 8.65 cm. The specific analysis is as follows:

During pregnancy, women undergo ultrasound monitoring to assess fetal growth and development. The biparietal diameter is an important measurement used primarily to evaluate the development of the fetal brain. It refers specifically to the distance between two bones in the fetal skull. At 34 weeks of gestation, a BPD value within this range generally indicates that the fetus is developing normally. Values below or above this range should be carefully monitored, and further examinations are recommended to rule out fetal abnormalities such as malformations or hydrocephalus. It's important to note that maternal malnutrition or underlying medical conditions can lead to abnormal intrauterine fetal development, resulting in an abnormal biparietal diameter.

In addition, at 34 weeks, pregnancy has entered the third trimester. Regular prenatal checkups are essential, and pregnant women should closely monitor fetal movements to prevent fetal hypoxia. If contractions occur or if there is rupture of membranes (water breaking), immediate medical attention at a hospital is necessary to avoid complications during delivery.

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