The physician has ordered aspirin therapy for a client with severe rheumatoid arthritis. A sign of acute aspirin toxicity is:
A. Confusion
B. Lactic acidosis
C. Tinnitus
D. Hypoxia
Correct Answer: C. Tinnitus
Option C: Salicylates such as aspirin are neurotoxic. Acute aspirin toxicity can lead to temporary hearing loss and tinnitus.
Options A, B, and D: Confusion, lactic acidosis, and hypoxia are signs of chronic aspirin overdose.