Why is fetal movement more frequent at night than during the day?

Generally, more frequent fetal movements at night than during the day may be caused by factors such as the fetus's sleep cycle, increased maternal attention, gestational hypertension, gestational diabetes, or fetal intrauterine hypoxia. If discomfort occurs, it is recommended to seek timely medical evaluation and treatment at a正规 hospital. Specific causes are analyzed as follows:

1. Fetal Sleep Cycle

The fetal sleep cycle lasts approximately 20–40 minutes. The fetus tends to be asleep more often during the day and more awake at night, leading to increased fetal movement. Pregnant women can record fetal movement patterns; no special intervention is required.

2. Increased Maternal Attention

Daily activities during the day may distract the mother’s attention, whereas in the quiet evening hours, she becomes more aware of fetal movements, subjectively perceiving them as more frequent. Maintaining a relaxed mindset, avoiding excessive focus on fetal movements, and adhering to regular作息 routines are sufficient.

3. Gestational Hypertension

Elevated blood pressure affects placental blood supply, causing fetal hypoxia and increased fetal movements. Under medical guidance, medications such as labetalol tablets, nifedipine sustained-release tablets, or methyldopa tablets may be prescribed. Regular blood pressure monitoring is essential.

4. Gestational Diabetes

Blood glucose fluctuations affect fetal metabolism, resulting in abnormally frequent fetal movements. Under medical supervision, insulin injection, insulin aspart injection, or insulin lispro injection may be used. Additionally, maintaining a balanced diet and engaging in moderate exercise helps control blood sugar levels.

5. Fetal Intrauterine Hypoxia

Reduced placental function or other factors may lead to fetal hypoxia, with symptoms more pronounced at night. Excessive fetal movement may initially increase but could later decrease. Immediate medical attention is required, including fetal heart rate monitoring. In some cases, cesarean delivery may be necessary to terminate the pregnancy.

In daily life, pregnant women should maintain regular作息 habits and avoid staying up late; follow a balanced diet and manage weight; attend routine prenatal checkups to monitor fetal development; learn proper techniques for counting fetal movements; and seek medical care promptly if any abnormalities are detected.