Patient's question:
Does the fetus have pulmonary circulation?Doctor's answer:
The fetus has pulmonary circulation, but during fetal life, the lungs do not perform respiratory functions and are in a non-dilated state. Pulmonary circulation resistance is high, and blood flow is minimal. Most of the blood does not enter the pulmonary circulation from the right ventricle but instead flows through a channel connecting the pulmonary artery and aorta, diverting from the pulmonary circulation to the main circulation to adapt to the special circulatory physiological requirements of fetal life! True pulmonary circulation begins at the moment of birth!