<prompt> Single umblical aery is associated with?NTDHydrops fetalisCongenital hea diseaseIn utero death  <response>: Ans. is ci.e., Congenital hea disease Approximately 30 of infants with a single umbilical aery have congenital abnormalities. Trisomy 18 is one of the more frequent abnormalities. The most common congenital anomalies in chromosomally normal fetuses and neonates were. Genitourinary 6.48 Cardiovascular 6.25 Musculoskeletal 5.44. 