A team of surgeons from two US hospitals have successfully repaired a major malformation in a fetal brain. The surgery, which was guided by ultrasound and involved embolization, treated a rare prenatal condition known as vein of Galen malformation. This condition allows blood to flow dangerously fast through the brain after birth. The successful procedure marks a significant breakthrough in treating this condition before complications become life-threatening.
Vein of Galen malformation is a rare type of vascular abnormality in the brain that permits arteries to connect directly with veins instead of capillaries, which control blood flow. The condition can cause significant harm to the body and places significant stress on the cardiovascular system, leading to heart failure. It can cause hypertension in the arteries in the lungs and heart and can also cause significant brain damage that results in neurological and cognitive impairment, as well as a high mortality rate.
Traditionally, the condition is treated after birth with embolization, which involves placing specialized material in the vein to block it. However, this can cause rapid changes for the worse after birth. A clinical trial is currently underway to assess the possibility of treating the condition before birth. The patient was a fetus at 34 weeks and 2 days gestation and was induced two days after the procedure due to the premature rupture of membranes in the uterus.
Despite the premature birth, the baby’s cardiovascular system appeared to be working normally, and it required no additional support or surgery. Doctors monitored the baby’s brain and saw no signs of neurological malfunction, fluid build-up, or bleeding, and they were given the all-clear and sent home.
While this is only the first patient in the ongoing clinical trial, the results are highly promising. The infant is continuing to thrive, suggesting that prenatal surgery could be a lifeline for some patients. The procedure has the potential to mark a paradigm shift in managing vein of Galen malformation, where the malformation is repaired before birth to head off heart failure before it occurs, reducing the risk of long-term brain damage, disability, or death among these infants. Further trials will be crucial to establish a clear pattern of improvement in both neurological and cardiovascular outcomes.
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