Gastrointestinal Surgery — MCQs

Gastrointestinal Surgery Indian Medical PG Practice Questions and MCQs

Question 1061: A 50-year-old woman presents with right upper quadrant pain after consuming fatty meals. An ultrasound shows gallstones and a thickened gallbladder wall. Which treatment is indicated for this condition?

A. Cholecystectomy (Correct Answer)
B. ERCP
C. Hepatic artery embolization
D. Liver transplant

Explanation: ***Correct: Cholecystectomy*** - The presence of **gallstones** and **right upper quadrant pain** after fatty meals, along with a thickened **gallbladder wall** on ultrasound, indicates acute cholecystitis. - **Surgical removal of the gallbladder** (**cholecystectomy**) is the definitive treatment for symptomatic cholelithiasis and cholecystitis. - **Laparoscopic cholecystectomy** is the gold standard procedure. *Incorrect: ERCP* - **Endoscopic retrograde cholangiopancreatography (ERCP)** is primarily used for diagnosing and treating **biliary duct obstruction** (e.g., choledocholithiasis) or pancreatic duct issues. - It is not the primary treatment for symptomatic cholelithiasis confined to the gallbladder. *Incorrect: Hepatic artery embolization* - **Hepatic artery embolization** is a procedure typically used in the management of **liver tumors** or certain types of **liver bleeding**. - It has no role in the treatment of gallstones or cholecystitis. *Incorrect: Liver transplant* - **Liver transplantation** is performed for **end-stage liver disease** or acute liver failure. - It is an inappropriate and excessive treatment for simple gallstones or cholecystitis.

Question 1062: Which intervention is appropriate for a patient with a small (<2 cm), symptomatic gallstone located in the neck of the gallbladder?

A. Use of shock waves to fragment gallstones
B. Surgical removal of the gallbladder using a minimally invasive approach (Correct Answer)
C. Dissolution of gallstones using oral medication
D. Procedure to remove stones from the bile duct

Explanation: ***Surgical removal of the gallbladder using a minimally invasive approach*** - For **symptomatic gallstones**, especially those in the neck of the gallbladder causing obstruction, **cholecystectomy** (surgical removal of the gallbladder) is the definitive treatment. - A **minimally invasive approach** (laparoscopic cholecystectomy) is preferred due to quicker recovery and less pain. *Use of shock waves to fragment gallstones* - **Extracorporeal shock wave lithotripsy (ESWL)** is less effective for gallstones in the gallbladder neck, as fragmented stones may still obstruct the cystic duct. - It is typically reserved for **solitary, non-calcified gallstones** that are <2 cm in diameter in patients who are not surgical candidates. *Dissolution of gallstones using oral medication* - **Oral bile acid therapy** (e.g., ursodeoxycholic acid) is a long-term treatment option primarily used for **small, cholesterol-rich gallstones** in patients who are not surgical candidates. - It is often ineffective for symptomatic stones in the gallbladder neck as symptoms are typically due to obstruction rather than chemical composition, and recurrence rates are high once treatment stops. *Procedure to remove stones from the bile duct* - A procedure to remove stones from the bile duct, such as **endoscopic retrograde cholangiopancreatography (ERCP)**, is indicated for **bile duct stones (choledocholithiasis)**, not for stones confined to the gallbladder neck. - This intervention would not address the primary problem of gallstones in the gallbladder itself causing symptoms.

Question 1063: A 70-year-old female with a history of atrial fibrillation on anticoagulation presents with acute mesenteric ischemia. What are the key intraoperative considerations during an exploratory laparotomy?

A. Bowel necrosis assessment and anticoagulation management. (Correct Answer)
B. Surgical duration.
C. Patient positioning.
D. Blood product availability.

Explanation: ***Bowel necrosis assessment and anticoagulation management*** - The primary intraoperative concern in acute mesenteric ischemia is accurately identifying and excising all **necrotic bowel** while preserving viable sections. - Given the patient's history of **atrial fibrillation** and anticoagulation, managing perioperative anticoagulation to minimize both thrombotic and bleeding risks is crucial. - These two considerations are **specific and critical** to this clinical scenario. *Surgical duration* - While prolonged surgical duration can have implications for patient recovery and complications, it is a secondary consideration. - The critical focus remains on the specific pathology of mesenteric ischemia, not just the length of the operation. *Patient positioning* - While patient positioning is a standard intraoperative consideration for all surgeries, it is not a **key** specific consideration for acute mesenteric ischemia. - Standard supine positioning is typically used; the focus should be on the pathology-specific concerns of bowel viability assessment and anticoagulation management. *Blood product availability* - Blood product availability is an important general preoperative and intraoperative consideration for any major surgery due to potential blood loss. - However, it is not as specific to the unique pathology and management strategies required for acute mesenteric ischemia in an anticoagulated patient compared to bowel viability assessment and anticoagulation management.

Question 1064: A 45-year-old male presents with hematemesis and is found to have a bleeding gastric ulcer. What is the most appropriate initial management?

A. Intravenous proton pump inhibitors
B. Endoscopic hemostasis (Correct Answer)
C. Surgical intervention
D. Transfusion of blood products

Explanation: ***Endoscopic hemostasis*** - This is the **most appropriate initial management** for a bleeding gastric ulcer as it allows for direct visualization of the bleeding site and application of therapies such as epinephrine injection, clipping, or electrocautery to stop the hemorrhage. - Endoscopy is both **diagnostic and therapeutic**, providing immediate control of bleeding and reducing the need for more invasive procedures. *Intravenous proton pump inhibitors* - While important in the overall management of bleeding gastric ulcers, **IV PPIs** primarily aim to reduce acid production and help stabilize the clot and prevent re-bleeding, but they do not *stop* active bleeding. - They are typically administered **adjunctively** after endoscopic hemostasis or in preparation for it. *Surgical intervention* - **Surgical intervention** is generally reserved for cases where endoscopic hemostasis fails, when there is massive uncontrolled bleeding, or when there are complications like perforation. - It carries higher risks compared to endoscopy and is not the **first-line treatment**. *Transfusion of blood products* - **Transfusion of blood products** (e.g., packed red blood cells, fresh frozen plasma) is supportive therapy aimed at managing hypovolemic shock and correcting coagulopathy. - It addresses the **consequences of blood loss** but does not directly stop the bleeding source itself.

Question 1065: A patient with a history of Crohn's disease presents with abdominal pain and distension. Imaging reveals dilated loops of bowel with air-fluid levels. What is the next best step in management?

A. IV fluid resuscitation and electrolyte correction
B. Nasogastric tube decompression (Correct Answer)
C. Immediate exploratory laparotomy
D. High-dose intravenous corticosteroids

Explanation: ***Nasogastric tube decompression*** - The presence of **dilated bowel loops** and **air-fluid levels** indicates **bowel obstruction**, likely due to a Crohn's-related stricture or inflammatory mass. - **Nasogastric decompression** is the **immediate priority** to relieve intraluminal pressure, prevent aspiration of gastric contents, reduce distension, and minimize risk of perforation. - In bowel obstruction, NG decompression provides **immediate symptomatic relief** and is the **first physical intervention** performed. - This should be initiated **concurrently** with IV access and fluid resuscitation as part of conservative management. *IV fluid resuscitation and electrolyte correction* - This is **equally essential** in bowel obstruction management and should be started **simultaneously** with NG decompression. - While critically important for correcting **dehydration**, **electrolyte imbalances**, and maintaining hemodynamic stability, it addresses the **systemic consequences** rather than the **direct mechanical problem**. - In the context of "next best step," **NG decompression** takes slight priority as the **immediate mechanical intervention** to decompress the obstructed bowel. *Immediate exploratory laparotomy* - **Surgical intervention** is reserved for: **failed conservative management** (48-72 hours), signs of **strangulation**, **bowel ischemia**, **peritonitis**, or **complete obstruction** with clinical deterioration. - In Crohn's disease, surgery should be **minimized** due to risk of short bowel syndrome with repeated resections. - **Conservative management** (NG decompression + IV fluids + bowel rest) is successful in **60-85%** of partial small bowel obstructions. *High-dose intravenous corticosteroids* - Corticosteroids treat **inflammatory flares** of Crohn's disease but do **not resolve mechanical obstruction** caused by strictures or fibrosis. - While they may be part of the **overall treatment plan** for underlying inflammatory disease, they are not the **immediate priority** for acute obstructive symptoms. - **Mechanical obstruction** requires **mechanical decompression**, not medical management alone.

Question 1066: A 70-year-old man presents with dysphagia and weight loss. Endoscopy reveals a mass in the lower esophagus. What is the next step in management?

A. Endoscopic biopsy (Correct Answer)
B. Barium swallow
C. CT scan
D. Esophageal manometry

Explanation: ***Endoscopic biopsy*** - A suspected **malignant mass identified during endoscopy** requires tissue confirmation for definitive diagnosis and staging. - Biopsy will determine the **histological type of cancer** (e.g., adenocarcinoma or squamous cell carcinoma) and grade, which guides subsequent treatment. *Barium swallow* - While a barium swallow can identify filling defects and strictures in the esophagus, it is a **diagnostic imaging study** and cannot provide tissue for histological diagnosis. - An **endoscopy has already identified a mass**, making further imaging for mass identification redundant at this stage without tissue confirmation. *CT scan* - A CT scan is crucial for **staging esophageal cancer** (assessing local invasion, nodal involvement, and distant metastases) once the diagnosis is confirmed by biopsy. - Performing a CT scan before tissue diagnosis is premature, as the mass's nature (benign vs. malignant) is not yet established. *Esophageal manometry* - Esophageal manometry measures the **motor function of the esophagus**, typically used to diagnose esophageal motility disorders like achalasia or esophageal spasm. - It is **not indicated for evaluating a suspicious mass** in the esophagus, as it does not provide information about the tissue pathology or malignancy.

Question 1067: What factors influence the choice between conservative management and surgical intervention in complicated acute diverticulitis?

A. Presence of abscess or bowel obstruction, and response to treatment (Correct Answer)
B. Surgery is always preferred in complicated cases
C. Surgery is only considered if the patient insists on it
D. Decision based on the availability of medical treatment

Explanation: ***Presence of abscess or bowel obstruction, and response to treatment*** - The presence and size of a **diverticular abscess** significantly influence management, with larger or symptomatic abscesses often requiring drainage or surgical intervention. - **Bowel obstruction** is a direct complication of complicated diverticulitis that almost always necessitates surgical management due to the risk of bowel ischemia and perforation. - The **patient's response to initial conservative management** dictates the need for escalation to surgery; lack of improvement or worsening symptoms indicates failure of medical therapy. *Surgery is always preferred in complicated cases* - This statement is incorrect as a significant proportion of complicated diverticulitis cases, particularly those with **small, contained abscesses**, can be successfully managed with conservative measures like antibiotics and percutaneous drainage. - The decision for surgery is guided by specific complications and the patient's clinical trajectory, not a blanket preference for surgical intervention in all complicated cases. *Surgery is only considered if the patient insists on it* - Medical decisions, especially for *complicated acute diverticulitis*, are primarily based on **clinical indications, patient stability**, and potential for complications, not solely on patient preference. - While patient input is important, it does not supersede medical necessity or a surgeon's professional judgment regarding optimal management. *Decision based on the availability of medical treatment* - The availability of medical treatment is generally assumed, and the choice between conservative and surgical management is based on the **severity of diverticulitis and its complications**, not merely whether medical treatment exists. - In most healthcare settings, both antibiotic therapy and surgical options are available to manage complicated diverticulitis.

Question 1068: A patient with an acute onset of severe abdominal pain is found to have peritonitis on physical examination. An abdominal X-ray shows free air under the diaphragm. What is the most likely cause?

A. Cholecystitis
B. Appendicitis
C. Peptic ulcer perforation (Correct Answer)
D. Pancreatitis

Explanation: ***Peptic ulcer perforation*** - The presence of **free air under the diaphragm** on an abdominal X-ray is pathognomonic for a **perforated viscus**, and acute severe abdominal pain with peritonitis points strongly to a **perforated peptic ulcer**. - A perforated ulcer allows gastric or duodenal contents to leak into the peritoneal cavity, leading to **chemical peritonitis** and subsequently bacterial peritonitis. *Cholecystitis* - **Cholecystitis** is inflammation of the gallbladder, typically causing **right upper quadrant pain**, fever, and leukocytosis. - While it can lead to severe pain, it does not typically cause **free air under the diaphragm** unless there's a rare perforation of the gallbladder itself. *Appendicitis* - **Appendicitis** causes **right lower quadrant pain** (often starting periumbilical), nausea, vomiting, and fever. - Although it can lead to generalized peritonitis if ruptured, it does not directly cause **free air under the diaphragm**. *Pancreatitis* - **Pancreatitis** typically presents with severe **epigastric pain** radiating to the back, often accompanied by nausea, vomiting, and elevated lipase/amylase. - It does not directly cause **free air under the diaphragm** unless there is a rare complication like perforation of a pseudocyst into the peritoneal cavity.

Question 1069: In a patient with acute diverticulitis confirmed by CT, what is the most common complication that may necessitate surgery?

A. Hemorrhage
B. Abscess formation
C. Fistula
D. Perforation (Correct Answer)

Explanation: ***Perforation*** - **Perforation** is the most common complication of acute diverticulitis that necessitates emergency surgery, occurring in 15-25% of hospitalized patients with acute diverticulitis - Free perforation leads to **generalized peritonitis**, which is a life-threatening condition requiring urgent surgical intervention (Hartmann's procedure or primary resection) - Even contained perforation may require surgical intervention if not responsive to conservative management - This is the **primary indication for emergency surgery** in acute diverticulitis *Abscess formation* - **Abscess formation** occurs in 15-20% of acute diverticulitis cases and is indeed a common complication - However, many abscesses (especially those <4-5 cm) are successfully managed **non-operatively** with IV antibiotics - Larger abscesses can often be treated with **percutaneous drainage** followed by elective surgery - While some abscesses require surgery, they are often managed conservatively initially, making perforation the more common surgical indication *Hemorrhage* - **Hemorrhage** from diverticula causes significant lower GI bleeding but typically occurs **separate from acute diverticulitis** - Diverticular bleeding usually stops spontaneously in 70-80% of cases - When surgery is needed for bleeding, it's usually in the setting of diverticulosis, not acute inflammatory diverticulitis - Not a common complication requiring surgery during acute diverticulitis episodes *Fistula* - **Fistula formation** is a **chronic complication** of recurrent diverticulitis, not an acute presentation - Results from chronic inflammation eroding into adjacent organs (colovesical, colovaginal, coloenteric fistulas) - Requires elective surgery but is not an acute complication necessitating emergency intervention - Much less common than perforation or abscess formation

Question 1070: A patient with esophageal varices presents with acute upper gastrointestinal bleeding. Which treatment is most appropriate for controlling the bleeding?

A. Thermal coagulation
B. Esophageal variceal banding (Correct Answer)
C. Systemic antibiotics
D. Immediate surgery

Explanation: ***Esophageal variceal banding*** - **Endoscopic variceal ligation (EVL) or banding** is the preferred method for controlling acute bleeding from esophageal varices due to its high success rate and safety profile. - It involves placing elastic bands over the bleeding varices to **occlude blood flow** and promote thrombosis, effectively stopping the hemorrhage. *Thermal coagulation* - **Thermal techniques**, such as heater probe or argon plasma coagulation, are generally reserved for non-variceal upper GI bleeding. - They are less effective and carry a higher risk of complications (e.g., perforation) when applied to the thin-walled, high-pressure esophageal varices. *Systemic antibiotics* - **Systemic antibiotics** are crucial for preventing complications like **spontaneous bacterial peritonitis** or other infections in patients with acute variceal bleeding. - However, antibiotics do not directly control the bleeding itself; they are used as an adjunct therapy. *Immediate surgery* - **Immediate surgery** for acute variceal bleeding is a last resort, generally considered only when endoscopic and pharmacological treatments have failed, or if there are specific contraindications to less invasive approaches. - Surgical shunts or devascularization procedures carry significant morbidity and mortality, and are rarely the first-line treatment.

Practice by Chapter

Esophageal Disorders

Practice Questions

Gastric Disorders

Practice Questions

Small Intestine Pathology

Practice Questions

Appendicitis

Practice Questions

Inflammatory Bowel Disease

Practice Questions

Intestinal Obstruction

Practice Questions

Gastrointestinal Bleeding

Practice Questions

Diverticular Disease

Practice Questions

Anorectal Disorders

Practice Questions

Colorectal Neoplasms

Practice Questions

Gastrointestinal Stomas

Practice Questions

Bariatric Surgery Principles

Practice Questions

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