LAPAROSCOPIC-ASSISTED INSERTION OF A VENTRICULOPERITONEAL SHUNT IN A RESCUED ASIATIC BLACK BEAR (URSUS THIBETANUS) IN LAOS.

A 3-yr-old Asiatic black bear (Ursus thibetanus), weighing 68 kg, underwent a laparoscopic-assisted placement of a ventriculoperitoneal shunt for hydrocephalus in the Lao People's Democratic Republic. Rescued as a young cub with a notably domed head, the bear's condition had deteriorated with age, but euthanasia was not a viable option because of cultural issues. Surgery was attempted as a palliative measure. The bear had ventrally orientated crossed eyes (abducens nerve palsy and dorsal midbrain syndrome), papilledema, severe rhinorrhea, depressed mentation, lethargy, a very poor appetite, and was stunted. Hydrocephalus was confirmed via intraoperative 2.0-5.0 MHz head ultrasound, as no magnetic resonance imaging was available in the country. Surgery was planned via 3D modeling of museum skulls and brain cavity, and ultrasound examination of formalin-preserved brains of other carnivores with hydrocephalus. The bear demonstrated a notable improvement in mentation, appetite, and behavior, maintained for 4 yr following surgery.