Follow up
The patients were followed up for at least three months after discharge. For mothers, blood routine, coagulation, and other tests were examined every week after discharge for one month and then detected every month. CTA testing was performed at one month, six months, 12 months, and then yearly after discharge to monitor the condition of the affected arteries and detect any postoperative complications7. For newborns, the growth and development of infants were monitored by pediatricians.