"pertaining to an emergency"
(from Dorland's Illustrated Medical Dictionary. http://www.credoreference.com/entry/ehsdorland/emergent)

""Emergent" deliveries were done as soon as possible and "urgent" deliveries within 30 minutes of the decision to operate.

The series included 117 women, 34 classified as emergent and 83 as urgent. General anesthesia was given significantly more often in emergent cases and epidural anesthesia in urgent cases. The decision-to-delivery time was nearly 14 minutes less in the emergent group. There were no differences in 1- or 5-minute Apgar scores, but both the umbilical arterial pH and base excess were significantly worse in emergent cases. "
http://www.obgynsurvey.com/pt/re/obgynsurv/abstract.00006254...

"Case: A 37-year-old G9P8 parturient presented at 29-weeks
gestation for emergent cesarean section"
"We surveyed trainee records of current third-year
anesthesia residents through November 2005, and recent graduates
as to the number of GA for elective and emergent C/S."
"Two of these emergent five CS were performed using the
preexisting epidural catheter and three CS required general
anesthesia"
"For the 81 patients studied, 27% required anesthetic
interventions with 6% needing immediate interventions for urgent
and emergent CS."
http://www.soap.org/media/SOAP_Recom_Accreditation.pdf