True stagements regarding aspirin toxicity are
**Core Concept**
Aspirin toxicity, also known as salicylate poisoning, occurs when excessive levels of aspirin or its metabolites accumulate in the body, disrupting normal physiological processes. This can lead to a range of symptoms, from mild to life-threatening, depending on the severity of the overdose.
**Why the Correct Answer is Right**
Aspirin is metabolized by the liver enzyme glucuronyl transferase, which conjugates salicylic acid to form salicyluric acid, a less toxic compound. However, in cases of overdose, this pathway becomes saturated, and the body starts to accumulate toxic levels of salicylic acid. This can lead to respiratory alkalosis, followed by metabolic acidosis, as the body attempts to compensate for the increased acid load. The central nervous system is also affected, with symptoms ranging from tinnitus and confusion to seizures and coma.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not accurately describe the primary mechanism of aspirin toxicity. While renal failure can be a complication of severe aspirin overdose, it is not the primary cause of toxicity.
**Option B:** This option is incorrect because it suggests that aspirin toxicity is solely the result of direct cardiac effects. While aspirin can affect cardiac function, its primary mechanism of toxicity involves the accumulation of salicylic acid and its effects on the central nervous system and respiratory system.
**Option C:** This option is incorrect because it implies that aspirin toxicity is solely the result of gastrointestinal irritation. While aspirin can cause gastrointestinal upset at therapeutic doses, its toxicity is primarily related to the accumulation of salicylic acid and its effects on the body.
**Clinical Pearl / High-Yield Fact**
In cases of suspected aspirin toxicity, it is essential to monitor for signs of respiratory alkalosis, including tachypnea and hyperventilation, which can be a precursor to more severe symptoms.
**Correct Answer: C.**