If membrane retention is complete, the vasculature of the membranes can be distended with clean water to stimulate expulsion. After a small incision is made in one of the umbilical vessels, a small-foal –sized stomach tube is slid into a vessel and water pumped int. Vessels should be allowed to remain distended for 5–15 minutes. Gentle, mild traction may help expulsion.
Courtesy of Dr. Patricia Sertich.