Which of the following statins undergoes the LEAST hepatic metabolism and is therefore preferred in patients with severe liver disease?

Explanation

## Statin Metabolism and Hepatic Safety **Key Point:** Pravastatin is hydrophilic and undergoes minimal hepatic metabolism (primarily renal excretion via conjugation), making it the safest statin in hepatic impairment. ### Hepatic Metabolism Profile of Statins | Statin | Hepatic Metabolism | Route of Elimination | Lipophilicity | Hepatic Safety | |--------|-------------------|----------------------|---------------|----------------| | Pravastatin | Minimal (~10%) | Renal conjugation | Hydrophilic | **SAFEST** | | Simvastatin | Extensive (CYP3A4) | Hepatic | Lipophilic | Avoid in liver disease | | Atorvastatin | Extensive (CYP3A4) | Hepatic | Lipophilic | Avoid in liver disease | | Lovastatin | Extensive (CYP3A4) | Hepatic | Lipophilic | Avoid in liver disease | **High-Yield:** Pravastatin's hydrophilic nature prevents significant hepatic uptake and metabolism, contrasting sharply with lipophilic statins (simvastatin, atorvastatin, lovastatin) that are extensively metabolized by hepatic CYP3A4. **Clinical Pearl:** In patients with cirrhosis or severe hepatic dysfunction, pravastatin is the preferred statin. Rosuvastatin (also hydrophilic) is an alternative but requires dose adjustment in hepatic impairment. **Mnemonic:** **"PRAVASTATIN = Primarily Renal"** — think of its renal elimination pathway as the key distinguishing feature.