In a 65-year-old woman with acute epigastric pain and vomiting that started yesterday, what is the likely diagnosis and initial treatment?

Acute Epigastric Pain with Vomiting in a 65-Year-Old Woman

In a 65-year-old woman presenting with acute epigastric pain and vomiting for one day, the most likely diagnoses include peptic ulcer disease (potentially with perforation), acute gastritis, or biliary pathology, and initial management should include immediate assessment for surgical emergencies followed by upper endoscopy or CT abdomen with IV contrast depending on clinical severity.

Differential Diagnosis Priority

The clinical presentation demands urgent evaluation for life-threatening conditions first:

High-Risk Diagnoses to Rule Out Immediately:

• Perforated peptic ulcer - This is a surgical emergency with mortality up to 30% 1. Look for:

  • Sudden onset severe pain
  • Rigid abdomen with peritoneal signs
  • History of NSAID use or H. pylori infection

• Acute cholecystitis/gangrenous gallbladder - Particularly dangerous in older adults who may present with atypical symptoms 2

• Gastric volvulus - Can present with epigastric pain and vomiting, especially if associated with hiatal hernia 3

• Mesenteric ischemia - Consider if pain is out of proportion to exam findings

Common Non-Emergent Diagnoses:

• Peptic ulcer disease (PUD) without perforation
• Acute gastritis
• GERD/esophagitis
• Gastroenteritis 4

Initial Clinical Assessment

Immediately assess for:

• Hemodynamic stability (vital signs, signs of shock)
• Peritoneal signs (rigidity, rebound tenderness, guarding)
• Character of vomiting (coffee-ground suggests upper GI bleeding)
• Fever (suggests infection/perforation)
• Risk factors: NSAID use, anticoagulation, alcohol, previous ulcer history

Diagnostic Approach

Laboratory Testing:

Order immediately:

• Complete blood count (elevated WBC suggests perforation/infection)
• Lipase (rule out pancreatitis)
• Hepatobiliary markers (AST, ALT, alkaline phosphatase, bilirubin)
• C-reactive protein
• Electrolytes, creatinine (assess dehydration from vomiting)
• Pregnancy test if applicable 4

Imaging Strategy:

If peritoneal signs present or patient appears toxic:

• CT abdomen and pelvis WITH IV contrast is the appropriate initial study 1
  • Use neutral oral contrast (water or dilute barium) rather than positive contrast to better assess mucosal enhancement and intraluminal bleeding 1
  • CT can detect: extraluminal gas (97% sensitive for perforation), focal wall defects (positive likelihood ratio 36.83), wall thickening, free fluid, and fat stranding 1
  • Combined wall defect/ulcer and wall thickening show 95% sensitivity and 93% specificity for perforation localization 1

If stable without peritoneal signs:

• Upper endoscopy is the gold standard for diagnosing PUD, gastritis, and esophagitis 1
• Consider right upper quadrant ultrasound if biliary pathology suspected 4

Important Caveat:

PUD complications occur in 2-10% of cases, and perforation carries 30% mortality 1. Do not delay imaging or surgical consultation if perforation is suspected based on clinical examination.

Initial Treatment Algorithm

If Perforation Suspected (peritoneal signs, free air):

1. NPO (nothing by mouth)
2. IV fluid resuscitation
3. Nasogastric tube decompression
4. IV proton pump inhibitor (PPI)
5. Broad-spectrum IV antibiotics
6. Immediate surgical consultation 1

If Stable PUD/Gastritis Suspected:

1. NPO initially, advance diet as tolerated
2. IV fluids for rehydration from vomiting
3. High-dose PPI therapy (e.g., pantoprazole 40 mg IV twice daily or omeprazole 40 mg PO twice daily)
4. Antiemetics (ondansetron 4-8 mg IV/PO)
5. Pain control (avoid NSAIDs)
6. Arrange upper endoscopy within 24 hours if:
   • Coffee-ground emesis or signs of bleeding
   • Severe symptoms
   • Age >65 with new-onset symptoms
7. Test and treat for H. pylori if PUD confirmed

Red Flags Requiring Immediate Intervention:

• Hemodynamic instability
• Peritoneal signs
• Coffee-ground emesis or hematemesis
• Severe, unrelenting pain
• Elderly patient with atypical presentation (higher risk for gangrenous gallbladder or other serious pathology) 2

The key principle: In a 65-year-old with acute symptoms, maintain high suspicion for surgical emergencies and obtain definitive imaging (CT with IV contrast) early if any concerning features are present, as older adults may have muted clinical presentations despite serious underlying pathology.