What should I do if I keep failing the four-dimensional ultrasound?

Four-dimensional ultrasound examinations may sometimes be difficult to complete, but this can often be improved by adjusting the examination time, engaging in light physical activity, replenishing energy, relaxing mentally, or changing body positions during the scan. In most cases, the issue is related to an unfavorable fetal position and does not require excessive anxiety. If multiple attempts still fail to complete the scan, or if other abnormal indicators are present, it is recommended to seek timely medical advice from a professional physician.

1. Adjust examination time: Choose a period when the fetus is typically more active, such as between 10 a.m. and 4 p.m., avoiding the fetal sleep cycle. By understanding your baby’s daily activity patterns, you can schedule the appointment accordingly to increase fetal cooperation during the scan.

2. Engage in light activity: Take a walk or climb stairs before or during the examination. Gentle body movements can stimulate fetal motion, helping the baby shift position so that doctors can better observe organ development and avoid obscured views caused by unfavorable postures.

3. Replenish energy: Consume light snacks such as sweets, fruits, or warm water before the exam—examples include chocolate, apples, or milk. A moderate rise in blood glucose levels can stimulate fetal movement, while also helping to ease maternal anxiety, thus creating favorable conditions for the examination.

4. Relax mentally: Excessive maternal tension can affect hormone levels and may cause the fetus to become either overly agitated or unusually still. Maintaining a calm mindset through deep breathing or listening to soothing music helps reduce stress and keeps the body relaxed, promoting better fetal cooperation.

5. Change examination position: Under medical guidance, adjust your lying position—such as switching to lateral or semi-reclining positions—to alter the spatial environment within the uterus. This can help the fetus reposition itself, enabling doctors to thoroughly examine critical areas including the head, spine, and limbs.

Prior to the examination, avoid being either too hungry or overly full, and wear loose, comfortable clothing. Arrive at the hospital early to acclimate to the environment and minimize anxiety caused by unfamiliar surroundings. Follow all doctor's instructions carefully and do not alter the examination procedure on your own to ensure a smooth and successful scan.