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Rapid infusion of Ticarcillin can lead to seizures due to its neurotoxic potential at high serum concentrations. When infused quickly, the medication can accumulate in the body and reach levels that may cause central nervous system stimulation, resulting in seizure activity. This response is particularly important to consider in patients who may already be at risk for seizures or those with compromised renal function, as they might have impaired drug clearance.

While renal failure can happen with various medications, it is not a direct result of rapid infusion of Ticarcillin itself. Anaphylaxis is an allergic reaction that can occur but is not specifically associated with the rapid infusion of Ticarcillin. Optic neuritis is not a recognized side effect of Ticarcillin at any infusion rate. Understanding the specific side effects related to the infusion rate helps healthcare professionals manage medication administration safely and effectively.