Rewrite the following exactly same without altering any words or numbering. Name : Abhishek Anand Group : 1350 A . Peptic Ulcer Disease — 10 MCQs 1. A patient with chronic NSAID use develops a gastric ulcer. Which mechanism most directly explains the ulcer formation? A. Increased gastrin secretion B. Increased gastric emptying C. Reduced prostaglandin-mediated mucosal protection D. Increased bicarbonate secretion Correct: C. Explanation: NSAIDs inhibit COX → ↓ prostaglandins → ↓ mucus/bicarbonate and mucosal blood flow. --- 2. A patient with recurrent ulcers and multiple distal duodenal ulcers has markedly elevated fasting gastrin. What is the most likely diagnosis? A. Menetrier disease B. Zollinger–Ellison syndrome C. Achalasia D. Crohn disease Correct: B. Explanation: Gastrinoma causes hypergastrinemia and excessive gastric acid secretion. --- 3. A patient with peptic ulcer disease suddenly develops severe generalized abdominal pain and free subdiaphragmatic air. What is the immediate priority? A. Oral PPI B. Endoscopy C. Resuscitation and urgent surgical consultation D. Colonoscopy Correct: C. Explanation: Perforation causes secondary peritonitis and requires rapid resuscitation + source control. --- 4. Which ulcer location is most strongly associated with massive upper GI hemorrhage? A. Lesser curvature B. Posterior duodenal wall C. Greater curvature D. Anterior duodenal wall Correct: B. Explanation: Posterior duodenal ulcers may erode the gastroduodenal artery. --- 5. Which finding most strongly suggests gastric outlet obstruction due to chronic peptic ulcer disease? A. Hematemesis B. Projectile vomiting of undigested food C. Melena alone D. Diarrhea Correct: B. Explanation: Pyloric/duodenal scarring causes obstruction → gastric retention and vomiting. --- 6. A patient has a gastric ulcer with weight loss and persistent vomiting. What is the most appropriate investigation? A. Abdominal X-ray only B. Colonoscopy C. Upper GI endoscopy with biopsy D. Serum amylase Correct: C. Explanation: Gastric ulcers require endoscopic assessment and biopsy to exclude malignancy. --- 7. Which finding best supports H. pylori eradication after treatment? A. Symptom improvement alone B. Repeat endoscopy in every patient C. Urea breath test after appropriate PPI withdrawal D. Serum antibody immediately after treatment Correct: C. Explanation: Urea breath test is useful for confirming eradication; antibodies may remain positive. --- 8. A patient with a perforated peptic ulcer has sudden severe epigastric pain followed by generalized rigidity. What explains the rigidity? A. Gastric spasm B. Chemical peritoneal irritation C. Intestinal hypermotility D. Pancreatic enzyme deficiency Correct: B. Explanation: Leakage of gastric/duodenal contents produces chemical peritonitis → reflex muscle guarding. --- 9. Which combination most strongly suggests Zollinger–Ellison syndrome? A. Single gastric ulcer + low gastrin B. Multiple/recurrent ulcers + high gastrin + high acid output C. Gastric ulcer + achlorhydria D. Duodenal ulcer + low acid secretion Correct: B. Explanation: Gastrinoma causes marked acid hypersecretion and recurrent/multiple ulcers. --- 10. A patient with a bleeding peptic ulcer becomes hypotensive despite endoscopic therapy. What is the next appropriate step? A. Continue oral PPI only B. Urgent angiographic embolization or surgery C. Colonoscopy D. Discharge after observation Correct: B. Explanation: Persistent/recurrent major bleeding requires definitive hemostasis by embolization or surgery. --- B. Small Bowel Obstruction — (Theoretical Questions) Q1. Define small bowel obstruction and describe its major causes. Small bowel obstruction is a mechanical or functional interruption of intestinal passage. Common causes are postoperative adhesions, hernias, tumors and Crohn disease. Adhesions are the most common cause in patients with previous abdominal surgery. Closed-loop obstruction can rapidly cause ischemia and necrosis. Complete obstruction usually causes vomiting, distension, pain and obstipation. Early diagnosis is important to prevent strangulation and perforation. --- Q2. Describe the pathophysiology and complications of small bowel obstruction. Proximal to the obstruction, intestinal contents, fluid and gas accumulate. This causes bowel dilatation and increased intraluminal pressure. Venous congestion develops first, followed by arterial compromise and ischemia. Progressive ischemia can cause necrosis, perforation and peritonitis. Vomiting and third-spacing produce dehydration and electrolyte abnormalities. Severe cases may progress to sepsis, shock and multiorgan failure. --- Q3. Describe the management of small bowel obstruction. Initial management includes NPO, IV fluids, electrolyte correction and nasogastric decompression. Analgesia and antiemetics are given, with close clinical monitoring. CT abdomen with contrast helps identify the level, cause and signs of ischemia. Stable partial adhesive obstruction may initially be managed conservatively. Strangulation, ischemia, perforation, peritonitis or failed conservative treatment requires surgery. Surgical treatment involves adhesiolysis, hernia repair or resection of nonviable bowel as required. --- C. Clinical Case — Peritonitis Clinical Case Presentation 1. Patient Identification Patient: 24-year-old male Occupation: Student Sex: Male Presentation: Emergency department 2. Chief Complaints Severe abdominal pain — 24 hours Vomiting — 12 hours Fever — 12 hours Abdominal distension — 8 hours 3. History of Present Illness Pain initially started around the umbilicus and migrated to the right lower quadrant. Pain subsequently became generalized and severe. Associated fever, anorexia, nausea and vomiting. Patient reports increasing abdominal rigidity and difficulty walking because of pain. No previous similar episode. 4. Past Medical & Surgical History No significant medical illness. No previous abdominal surgery. No history of peptic ulcer disease. 5. Personal History No smoking or alcohol abuse. Normal bowel and urinary habits before the current illness. No recent abdominal trauma. 6. Family History No significant family history of gastrointestinal disease. 7. General Examination Conscious but toxic-looking. Temperature: 39°C Pulse: 118/min BP: 100/65 mmHg Respiratory rate: 24/min Mild dehydration present. 8. Abdominal Examination Abdomen distended. Diffuse severe tenderness. Marked guarding and rigidity. Rebound tenderness present. Bowel sounds markedly reduced. McBurney point tenderness positive. 9. Systemic Examination Cardiovascular: tachycardia. Respiratory: tachypnea; basal air entry preserved. CNS: conscious and oriented. No other major abnormality. 10. Laboratory Investigations WBC: 18,500/µL Neutrophils: 90% CRP: markedly elevated. Hemoglobin: 13.2 g/dL Serum lactate: 3.2 mmol/L Electrolytes: mild dehydration-related abnormalities. Renal function: mildly impaired due to dehydration. 11. Imaging Investigations Ultrasound: Enlarged, non-compressible appendix. Periappendiceal fluid. CT abdomen: Inflamed appendix with appendicolith. Appendiceal wall discontinuity. Periappendiceal collection and free intraperitoneal fluid. Findings consistent with perforation and generalized peritonitis. 12. Differential Diagnosis Perforated acute appendicitis Perforated peptic ulcer Acute cholecystitis with perforation Perforated diverticulitis Intestinal perforation Mesenteric ischemia 13. Clinical Scoring — Alvarado Score Finding Score Migration of pain 1 Anorexia 1 Nausea/vomiting 1 RLQ tenderness 2 Rebound tenderness 1 Fever 1 Leukocytosis 2 Neutrophilia 1 Total 10/10 Interpretation: Very high probability of acute appendicitis. 14. Provisional Diagnosis Perforated acute appendicitis with generalized peritonitis. 15. Final Diagnosis Perforated gangrenous acute appendicitis causing secondary generalized bacterial peritonitis with early sepsis. 16. Treatment / Management Immediate NPO. Two large-bore IV lines. Rapid IV crystalloid resuscitation. IV broad-spectrum antibiotics covering Gram-negative and anaerobic organisms. Analgesia and antiemetics. Urinary catheter and strict fluid balance. Monitor BP, urine output, lactate and vital signs. Urgent surgical source control. 17. Surgical Management Emergency exploratory laparoscopy/laparotomy depending on clinical stability and surgical expertise. Appendectomy with removal of perforated appendix. Peritoneal lavage/source control. Drain placement if clinically indicated. Drainage of any localized abscess. Peritoneal fluid obtained for culture when appropriate. 18. Postoperative Management Continue IV antibiotics according to severity and source control. IV fluids and electrolyte correction. Analgesia and antiemetics. Early mobilization and gradual return to oral diet. Monitor wound, drain output, temperature, WBC and renal function. Monitor for postoperative sepsis or intra-abdominal collection. 19. Complications Sepsis/septic shock Intra-abdominal abscess Wound infection Paralytic ileus Adhesive intestinal obstruction Anastomotic/bowel injury if bowel resection is required Multiorgan dysfunction in severe infection 20. Prognosis Good with early antibiotic therapy and adequate surgical source control. Prognosis worsens with delayed treatment, established sepsis, extensive contamination or organ dysfunction.

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