**Core Concept**
Salicylate poisoning, often due to excessive ingestion of aspirin, leads to a complex pathophysiological cascade involving the central nervous system, kidneys, and other organs. The management of salicylate poisoning requires a multi-faceted approach, including supportive care, pharmacological interventions, and careful monitoring.

**Why the Correct Answer is Right**
Alkalization of the urine is a crucial step in the management of salicylate poisoning. This is achieved by administering sodium bicarbonate, which increases the pH of the urine, thereby increasing the ionization of salicylate and reducing its reabsorption in the renal tubules. This helps in enhancing the excretion of salicylate from the body. The mechanism of action involves the inhibition of the reabsorption of salicylate in the proximal convoluted tubule, allowing for increased excretion.

**Why Each Wrong Option is Incorrect**
**Option A:** Activated charcoal administration is useful in the management of acute poisoning, but it is not recommended in the case of salicylate poisoning due to the narrow therapeutic index and the risk of further gastrointestinal irritation.
**Option B:** Hemodialysis is not a recommended treatment for salicylate poisoning, as the blood-brain barrier restricts the removal of salicylate from the brain, and the risk of inducing cerebral edema outweighs any potential benefits.
**Option C:** Gastric lavage is not a recommended treatment for salicylate poisoning, as it may cause further irritation of the gastrointestinal tract and is not effective in removing salicylate from the body.

**Clinical Pearl / High-Yield Fact**
In cases of salicylate poisoning, it is essential to maintain a high index of suspicion, as the symptoms can be non-specific and may not appear immediately after ingestion. Patients may present with tinnitus, confusion, and respiratory alkalosis, which can progress to severe complications if not promptly addressed.

**Correct Answer:** C.