A client presents to the emergency department with the following vital signs: blood pressure, 85/50 mm Hg temperature, 38.8 C: pulse, 132 beats/minute; respirations, 22 breaths/minute; and oxygen saturation, 100%. The client states, "I was bitten by a snake while canoeing on the river, but I don't know what type of snake it was." What type of snakebite should the nurse suspect?