What is the condition of a fetus with a single umbilical artery

Patient's question:

Biparietal diameter: 8.8 cm
Head circumference: 32.9 cm
Abdominal circumference: 34 cm
Femur length: 7.1 cm
Humerus length: 6.4 cm
Umbilical artery systolic/diastolic ratio (S/D): 1.88
Umbilical blood flow resistance index (RI): 0.46
Cerebroventricular ratio

Doctor's answer:

Analysis of the condition: Hello, this single umbilical artery does not indicate any abnormality in the fetus; it is simply relatively rare.
Advice: I think it can be delivered, and the umbilical cord is not a major issue. Other data do not suggest any abnormalities. That's the situation. I wish you a speedy recovery. We know that chromosomal abnormalities can cause significant harm to the child. If treatment is delayed or the wrong method is used, the condition can progress rapidly, causing great harm to the child. Therefore, it is important to seek professional medical treatment promptly. This is the key.