A 40-year-old G1P0010 presents to the clinic with nausea and vomiting 8 weeks after a spontaneous abortion at 10 weeks gestation. She admits to heavy drinking (7–8 glasses of wine per day) for the last 20 years; however, after the pregnancy loss, she increased her drinking to 8–9 glasses per day. Hepatomegaly, right upper quadrant pain, and jaundice are noted on abdominal examination. The lungs are clear to auscultation with no abnormalities on chest X-ray. Liver function tests are obtained and a biopsy is performed. Which of the following findings is most likely to be true in her condition?

↑ NADH/NAD+; AST:ALT ≥ 2:1; β-oxidation ↓; β-hydroxybutyrate ↑; lactic acid ↑

↑ NADH/NAD+; ALT:AST ≥ 2:1; β-oxidation ↓; β-hydroxybutyrate ↓; lactic acid ↓

↑ NAD+/NADH; AST:ALT ≥ 2:1; β-oxidation ↑; β-hydroxybutyrate ↓; lactic acid ↓

↑ NADH/NAD+; ALT:AST ≥ 2:1; β-oxidation ↓; β-hydroxybutyrate ↓; lactic acid ↑

↑ NAD+/NADH; ALT:AST ≥ 2:1; β-oxidation ↑; β-hydroxybutyrate, no change; lactic acid ↓

A 59-year-old woman comes to the physician for a routine health maintenance examination. She feels well. She has systemic lupus erythematosus and hypertension. She does not drink alcohol. Her current medications include lisinopril and hydroxychloroquine. She appears malnourished. Her vital signs are within normal limits. Examination shows a soft, nontender abdomen. There is no ascites or hepatosplenomegaly. Serum studies show: Total bilirubin 1.2 mg/dL Alkaline phosphatase 60 U/L Alanine aminotransferase 456 U/L Aspartate aminotransferase 145 U/L Hepatitis A IgM antibody negative Hepatitis A IgG antibody positive Hepatitis B surface antigen positive Hepatitis B surface antibody negative Hepatitis B envelope antigen positive Hepatitis B envelope antibody negative Hepatitis B core antigen IgM antibody negative Hepatitis B core antigen IgG antibody positive Hepatitis C antibody negative Which of the following is the most appropriate treatment for this patient?

Pegylated interferon alpha therapy

Referral to a liver transplantation center

A 55-year-old man comes to the physician for a follow-up examination. During the past month, he has had mild itching. He has alcoholic cirrhosis, hypertension, and gastroesophageal reflux disease. He used to drink a pint of vodka and multiple beers daily but quit 4 months ago. Current medications include ramipril, esomeprazole, and vitamin B supplements. He appears thin. His temperature is 36.8°C (98.2°F), pulse is 68/min, and blood pressure is 115/72 mm Hg. Examination shows reddening of the palms bilaterally and several telangiectasias over the chest, abdomen, and back. There is symmetrical enlargement of the breast tissue bilaterally. His testes are small and firm on palpation. The remainder of the examination shows no abnormalities. Laboratory studies show: Hemoglobin 10.1 g/dL Leukocyte count 4300/mm3 Platelet count 89,000/mm3 Prothrombin time 11 sec (INR = 1) Serum Albumin 3 g/dL Bilirubin Total 2.0 mg/dL Direct 0.2 mg/dL Alkaline phosphatase 43 U/L AST 55 U/L ALT 40 U/L α-Fetoprotein 8 ng/mL (N < 10) Anti-HAV IgG antibody positive Anti-HBs antibody negative Abdominal ultrasonography shows a nodular liver surface with atrophy of the right lobe of the liver. An upper endoscopy shows no abnormalities. Which of the following is the most appropriate next step in management?

Repeat abdominal ultrasound in 6 months

Obtain CT scan of the abdomen now

Measure serum α-fetoprotein levels in 3 months

Administer hepatitis A vaccine now

A 53-year-old homeless woman is brought to the emergency department by the police after she was found in the park lying unconscious on the ground. Both of her pupils are normal in size and reactive to light. There are no signs of head trauma. Finger prick test shows a blood glucose level of 20 mg/dL. She has been brought to the emergency department for acute alcohol intoxication several times before. Her vitals signs include: blood pressure 100/70 mm Hg, heart rate 90/min, respiratory rate 22/min, and temperature 35.0℃ (95.0℉). On general examination, she looks pale, but there is no sign of icterus noted. On physical examination, the abdomen is soft and non-tender and no hepatosplenomegaly noted. She spontaneously opens her eyes after the administration of a bolus of intravenous dextrose, thiamine, and naloxone. Blood and urine samples are drawn for toxicology screening. Finally, the blood alcohol level turns out to be 300 mg/dL. What will be the most likely laboratory findings in this patient?

AST > ALT, increased gamma-glutamyl transferase

ALT > AST, increased gamma-glutamyl transferase

AST > ALT, normal gamma-glutamyl transferase

A 67-year-old man presents with fatigue, progressive abdominal distention and yellow skin coloration for the past 2 weeks. He denies fever, chills, or other symptoms. Past medical history is unremarkable. He reports heavy alcohol consumption for the past several years but says he quit recently. On physical examination, the patient appears jaundiced and is ill-appearing. There is shifting dullness present on abdominal percussion with a positive fluid wave. Sclera are icteric. Bilateral gynecomastia is present. Laboratory findings are significant for the following: Hgb 13 g/dL Leukocyte count 4,500/mm3 Platelets 86,000/mm3 Aspartate transaminase (AST) 108 U/L Alanine transaminase (ALT) 55 U/L GGT 185 U/L Urea 23 mg/dL Iron 120 μg/dL Ferritin 180 μg/dL Transferrin saturation 40% Which of the following is the most likely diagnosis in this patient?

Nonalcoholic fatty liver disease

A 67-year-old man comes to the physician for a routine examination. He does not take any medications. He drinks 6 to 7 bottles of beer every night, and says he often has a shot of whiskey in the morning “for my headache.” He was recently fired from his job for arriving late. He says there is nothing wrong with his drinking but expresses frustration at his best friend no longer returning his calls. Which of the following is the most appropriate initial response by the physician?

I'm sorry that your friend no longer returns your calls. What do you think your friend is worried about?

I'm sorry to hear you lost your job. I am concerned about the amount of alcohol you are drinking.

I'm sorry to hear you lost your job. Drinking the amount of alcohol that you do can have very negative effects on your health.

I'm sorry that your friend no longer returns your calls. It seems like your drinking is affecting your close relationships.

I'm sorry that your friend no longer returns your calls. Do you feel that your drinking has affected your relationship with your friend?

A 38-year-old woman comes to the physician because of a 3-month history of moderate abdominal pain that is unresponsive to medication. She has a history of two spontaneous abortions at 11 and 12 weeks' gestation. Ultrasound examination of the abdomen shows normal liver parenchyma, a dilated portal vein, and splenic enlargement. Upper endoscopy shows dilated submucosal veins in the lower esophagus. Further evaluation of this patient is most likely to show which of the following findings?

Increased serum bilirubin levels

Alcoholic liver disease for USMLE Step 2 CK: High-Yield Internal Medicine Lessons

Pathophysiology - Booze Blues

Metabolic Driver: Chronic ethanol consumption overwhelms alcohol dehydrogenase (ADH), inducing the Microsomal Ethanol-Oxidizing System (MEOS).
Toxic Metabolites: Both pathways produce acetaldehyde and reactive oxygen species (ROS), causing direct hepatocyte injury.
Metabolic Mayhem: A sky-high NADH/NAD+ ratio results, which:
- Inhibits gluconeogenesis & fatty acid oxidation.
- Promotes ketogenesis & lipogenesis → steatosis (fatty liver).
Inflammation: Gut-derived endotoxin (LPS) activates Kupffer cells (liver macrophages) to release pro-inflammatory cytokines like TNF-α, driving hepatitis.

⭐ The altered NADH/NAD+ ratio is a cornerstone of alcoholic liver disease, directly causing the hallmark findings of hypoglycemia, ketoacidosis, and hepatic steatosis.

Ethanol metabolism pathways in liver cells

Presentation & Diagnosis - The Liver's Cry

Clinical Spectrum: Ranges from asymptomatic hepatomegaly to decompensated cirrhosis (jaundice, ascites, encephalopathy).
Acute Alcoholic Hepatitis: Presents with fever, RUQ pain, tender hepatomegaly, and jaundice.
Key Lab Markers:
- AST:ALT ratio > 2:1 is highly suggestive (both typically < 500 IU/L).
- ↑ GGT, ↑ Bilirubin, ↑ INR, ↑ MCV (macrocytosis).
Prognosis in Hepatitis:
- Maddrey's Discriminant Function (MDF): A score > 32 indicates severe disease and high short-term mortality; consider corticosteroids.

⭐ The classic AST:ALT ratio > 2 is attributed to mitochondrial injury (rich in AST) and pyridoxal-5'-phosphate (vitamin B6) deficiency, which is a necessary cofactor for ALT synthesis.

Histopathology of alcoholic liver disease

Management & Prognosis - Damage Control

Cornerstone: Complete abstinence from alcohol. Improves prognosis at all stages.
Nutritional Support: Correct deficiencies, especially thiamine (to prevent Wernicke-Korsakoff syndrome) and folate. Provide adequate protein and calories.
Pharmacotherapy for Severe Alcoholic Hepatitis (AH):
- Indicated if Maddrey's Discriminant Function (MDF) > 32 or MELD > 20.
- Prednisolone is the first-line treatment.
- Pentoxifylline is an alternative if steroids are contraindicated (e.g., active GI bleed, infection).

⭐ Lille Model: A score > 0.45 after 7 days of corticosteroids indicates non-response and is associated with a very high 6-month mortality. Steroids should be discontinued.

Prognostic Scores - Numbers Game

Maddrey's Discriminant Function (MDF)
- Formula: $4.6 \times (\text{prothrombin time} - \text{control time}) + \text{total bilirubin}$
- An MDF score > 32 indicates severe alcoholic hepatitis and a high short-term mortality rate. It is a key threshold for initiating corticosteroid therapy.
MELD Score (Model for End-Stage Liver Disease)
- Uses Bilirubin, INR, and Creatinine to predict 3-month mortality.
- Primarily used for prioritizing patients for liver transplantation.
Glasgow Alcoholic Hepatitis Score (GAHS)
- A score > 8 on day 1 predicts poor prognosis.

⭐ Lille Model: Assesses response to corticosteroids at day 7. A score > 0.45 signifies treatment failure and predicts a very high 6-month mortality, prompting cessation of steroids.

High‑Yield Points - ⚡ Biggest Takeaways

AST:ALT ratio > 2:1 is a classic, though not universal, laboratory finding.

Histology reveals Mallory-Denk bodies, ballooning degeneration, and perivenular fibrosis.

The clinical spectrum progresses from hepatic steatosis (fatty liver) to alcoholic hepatitis, and finally to cirrhosis.

Acetaldehyde, a toxic metabolite of alcohol, is central to pathogenesis.

Complete abstinence from alcohol is the most critical intervention.

For severe alcoholic hepatitis (Maddrey's score > 32), consider corticosteroids.

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