A 48-year-old man with chronic alcohol abuse is found to have cirrhosis on imaging. Regarding the mechanisms and consequences of alcoholic cirrhosis, all of the following are true EXCEPT:

Explanation

## Mechanisms of Alcoholic Cirrhosis and Its Consequences ### Pathophysiology of Cirrhosis Development **Key Point:** Alcoholic cirrhosis develops through repeated cycles of hepatocyte injury, inflammation, and fibrosis. Once cirrhosis is established, hepatocyte mass is progressively lost, not preserved. ### Mechanisms of Injury and Fibrosis ```mermaid flowchart TD A[Chronic Alcohol Consumption]:::action --> B[Acetaldehyde Generation]:::outcome B --> C[Lipid Peroxidation & ROS]:::outcome C --> D[Hepatocyte Necrosis]:::urgent D --> E[Stellate Cell Activation]:::action E --> F[Collagen Deposition]:::outcome F --> G[Progressive Fibrosis → Cirrhosis]:::outcome G --> H[Loss of Hepatocyte Mass]:::urgent H --> I[Synthetic Dysfunction]:::urgent ``` ### Why Option 4 Is Incorrect **High-Yield:** In established cirrhosis, hepatocyte mass is **progressively lost**, not preserved. This leads to: - Decreased synthesis of albumin, clotting factors (II, V, VII, IX, X), and other hepatic proteins - Impaired detoxification capacity - Hepatic encephalopathy risk - Portal hypertension worsening The synthetic function declines proportionally to the degree of hepatocyte loss and fibrosis. Early compensated cirrhosis may maintain near-normal synthetic function, but this is NOT preservation — it is compensation by remaining viable hepatocytes. **Clinical Pearl:** The prothrombin time (PT) and INR are sensitive markers of hepatic synthetic dysfunction in cirrhosis. A prolonged PT that does not correct with vitamin K administration indicates hepatocellular disease, not biliary obstruction. ### Correct Mechanisms Explained | Mechanism | Details | Clinical Significance | |-----------|---------|----------------------| | **Acetaldehyde-induced ROS** | Lipid peroxidation damages hepatocyte membranes and mitochondria | Contributes to hepatocyte necrosis and apoptosis | | **Stellate cell activation** | Myofibroblast transformation → increased collagen I and III synthesis | Drives fibrosis progression; target for antifibrotic therapies | | **Portal hypertension** | Increased hepatic vascular resistance from cirrhotic nodules and endothelial dysfunction | Leads to ascites, varices, splenomegaly, and portal-systemic shunting | **Mnemonic: CRASH** — Cirrhosis, ROS damage, Acetaldehyde, Stellate activation, Hepatocyte loss. [cite:Robbins 10e Ch 18]