EXPECTANT MANAGEMENT OF PRE-TERM PRE-LABOR RUPTURE OF FETAL MEMBRANES IN A WESTERN LOWLAND GORILLA (GORILLA GORILLA GORILLA).

This case describes successful expectant management of pre-term pre-labor rupture of fetal membranes (PPROM) in a 20-year-old female western lowland gorilla (Gorilla gorilla gorilla). Rupture of fetal membranes occurred at estimated day 231 of gestation, prior to the birthing window (days 237-285) for this species. Expectant management consisted of broad-spectrum antibiotics, corticosteroids, and monitoring of the dam and fetus via serial ultrasonography, vital signs, and behavioral observation. The pregnancy was supported to term and completed with unassisted parturition of a healthy neonate at estimated day 250 of gestation. PPROM is a common complication reported in human pregnancy but has not been reported previously in gorillas in managed care. Expectant management was successful in this case and underscores the importance of operant conditioning which allowed for maternal and fetal monitoring. This case may serve as a reference for future management of similar conditions, benefiting breeding goals for this species.