Gastrointestinal Surgery Practice Questions

Q: A 38-year-old man with Crohn's disease presents with a 3-day history of increasing abdominal pain, distension, and inability to pass gas or stool. CT shows dilated small bowel loops with a transition point in the terminal ileum and bowel wall thickening. What factor most influences the decision between conservative and surgical management?

Presence of fever and leukocytosis. ***Presence of fever and leukocytosis*** - **Fever** and **leukocytosis** are critical indicators of **bowel ischemia**, **perforation**, or severe infection, suggesting a complicated obstruction requiring urgent surgical intervention. - In the absence of these systemic signs of toxicity, a conservative approach with fluid resuscitation, bowel rest, and corticosteroids might be appropriate for a Crohn's disease exacerbation causing partial obstruction. *Degree of bowel wall thickening* - While **bowel wall thickening** is characteristic of Crohn's disease and contributes to luminal narrowing, its presence alone does not dictate immediate surgical intervention unless accompanied by signs of severe inflammation or impending complications. - The degree of thickening can be a chronic finding in Crohn's and might respond to medical therapy if there are no signs of infection or ischemia. *History of previous bowel resections* - A history of **previous resections** is relevant for surgical planning (e.g., risk of short bowel syndrome) but does not, in itself, determine the primary decision between conservative vs. surgical management for an acute obstructive episode. - It influences the operative approach if surgery is chosen, but not necessarily the initial choice for managing the current exacerbation. *Duration of symptoms* - The **duration of symptoms** provides context for the chronicity of the obstruction but is not the sole determinant for immediate surgical intervention. - A longer duration without signs of peritonitis or ischemia might even suggest a more chronic, partial obstruction that responds to medical management.

Q: A 28-year-old pregnant woman at 32 weeks gestation presents with acute appendicitis. She is hemodynamically stable but has significant right lower quadrant pain and leukocytosis. The obstetric team is concerned about preterm labor risk, while the surgical team recommends immediate appendectomy. Synthesize the risks and benefits to determine the optimal management approach.

Immediate open appendectomy via muscle-splitting incision. ***Immediate open appendectomy via muscle-splitting incision*** - Appendicitis in pregnancy, especially in the third trimester, carries significant risks of **perforation**, **peritonitis**, and **preterm labor** if left untreated, making immediate surgical intervention crucial. - While laparoscopic approaches are often preferred, an **open approach** via a transverse muscle-splitting incision may be opted for in the third trimester due to the enlarged uterus altering anatomy and potentially obscuring laparoscopic views. *Conservative management with antibiotics until delivery* - This approach is generally **not recommended** for acute appendicitis due to the high risk of **perforation** and subsequent maternal and fetal complications, including peritonitis, sepsis, and preterm labor. - Delaying surgery significantly increases the chances of disease progression, which can lead to a more complex and dangerous situation for both the mother and the fetus. *Immediate delivery followed by appendectomy* - Delivering the fetus at 32 weeks gestation, even if stable, would expose the newborn to risks associated with **preterm birth**, such as respiratory distress syndrome and other neonatal morbidities. - The primary goal at 32 weeks is to prolong the pregnancy if possible, and appendectomy with fetal monitoring is a safer alternative than early iatrogenic delivery. *Laparoscopic appendectomy with CO2 insufflation modifications* - While laparoscopic appendectomy can be performed in pregnancy, the **large gravid uterus** in the third trimester often makes it technically challenging and increases the risk of uterine injury with standard port placement and CO2 insufflation pressures. - Open appendectomy is often preferred in the third trimester to minimize uterine manipulation and ensure adequate visualization without the risks associated with elevated intra-abdominal pressures from CO2 insufflation.

Q: A patient presents with an umbilical mass, which was previously reducible but has now become irreducible with discharge coming out, as shown in the image. What is the most appropriate management?

Umbilical excision with mesh hernioplasty. ***Umbilical excision with mesh hernioplasty*** - The presence of an **irreducible umbilical mass with discharge** indicates a complicated umbilical hernia, likely with **incarceration, strangulation, or infection**. - Management requires **excision of compromised tissue** (umbilicus and surrounding necrotic/infected skin) followed by **hernia defect repair**. - **Mesh hernioplasty** provides strong, durable reinforcement and prevents recurrence. - **Note:** In heavily contaminated fields, primary tissue repair or biologic mesh may be preferred over synthetic mesh, or staged repair may be considered. However, if contamination is minimal after debridement, mesh repair can be performed in the same setting. *Umbilical excision* - While **excision of the compromised umbilical skin and necrotic tissue** is necessary due to the discharge (suggesting infection or necrosis), **excision alone does not address the underlying hernia defect**. - Simply excising the umbilicus without repairing the hernia would lead to **persistent hernia or recurrence**. *Mesh hernioplasty* - A mesh hernioplasty alone is appropriate for **uncomplicated, reducible umbilical hernias** to reinforce the abdominal wall. - However, it **does not account for the irreducibility and skin changes/discharge**, which necessitate **excision of potentially infected or necrotic tissue** first. - Placing mesh without addressing the compromised tissue would risk ongoing infection and mesh complications. *Conservative* - **Conservative management** is reserved for **asymptomatic, reducible umbilical hernias** in adults (especially if small) or for infants where spontaneous closure can occur. - An **irreducible mass with discharge** signifies an **acute surgical emergency** (incarceration, strangulation, or infection) requiring **urgent surgical intervention**, not observation.

Q: Which of the following is not seen with ileal resections?

Cognitive improvement. ***Cognitive improvement*** - Ileal resections are associated with malabsorption of various nutrients, but they do not lead to **cognitive improvement**. In fact, nutrient deficiencies (particularly B12) can negatively impact cognitive function. - The effects of ileal resections are primarily related to **digestion** and **absorption**, causing symptoms like diarrhea, weight loss, and specific vitamin deficiencies, not enhanced brain function. - This is the **most obvious answer** to what is "not seen" with ileal resections. *Microcytic hypochromic anemia* - This type of anemia is caused by **iron deficiency**, which is **NOT a direct consequence** of ileal resection. - **Iron absorption** occurs primarily in the **duodenum and proximal jejunum**, not in the ileum. - Ileal resection typically causes **macrocytic anemia** (due to B12 deficiency), not microcytic anemia. - While microcytic anemia could occur indirectly from chronic blood loss in inflammatory bowel disease, it is not a characteristic feature of ileal resection itself. *Nuclear cytological asynchrony* - **Nuclear cytological asynchrony** (megaloblastic changes) is a **direct consequence** of **vitamin B12 deficiency**, which commonly results from terminal ileal resection. - The **terminal ileum** is the primary site for absorption of **vitamin B12** (cobalamin) bound to intrinsic factor. - This manifests as macrocytic anemia with characteristic bone marrow changes. *Neurological manifestation* - **Vitamin B12 deficiency**, resulting from impaired absorption after ileal resection, directly causes various **neurological symptoms**. - These include **peripheral neuropathy**, **subacute combined degeneration of the spinal cord** (posterior and lateral columns), paresthesias, ataxia, memory impairment, and cognitive changes. - Neurological symptoms may occur even before hematological changes become apparent.

Q: Identify the procedure shown in the image, which is performed in a patient with recurrent GERD.

Nissen fundoplication. ***Nissen fundoplication*** - The image clearly depicts the **fundus of the stomach** being wrapped completely around the lower esophagus and sutured in place, which is the hallmark of a **360-degree Nissen fundoplication**. - This procedure aims to strengthen the **lower esophageal sphincter (LES)** to prevent reflux in patients with recurrent GERD. *Partial gastrectomy* - This procedure involves the **surgical removal of a portion of the stomach** and is typically performed for conditions like gastric cancer or severe ulcers, not primarily for GERD. - The image shows the stomach intact and being wrapped, not resected. *Esophageal banding* - Esophageal banding is a procedure used to treat **esophageal varices** by placing elastic bands around dilated veins, not a surgical intervention for GERD that alters stomach anatomy. - The image shows a gastric maneuver, not banding of the esophagus. *Toupet fundoplication* - A Toupet fundoplication involves a **partial (270-degree) wrap** of the fundus around the esophagus, leaving a small portion unwrapped. - The image distinctly illustrates a **complete 360-degree wrap**, distinguishing it from a Toupet fundoplication.

Q: Which of the following is the most commonly performed repair for a direct inguinal hernia?

Lichtenstein repair. ***Lichtenstein repair*** - The **Lichtenstein repair** is a **tension-free mesh repair** and is the most commonly performed technique for direct inguinal hernias due to its low recurrence rates. - This technique involves placing a **synthetic mesh** over the deficient posterior wall of the inguinal canal, reinforcing the weakened area. *Bassini's repair* - **Bassini's repair** is a tissue-based repair that involves suturing the conjoined tendon to the inguinal ligament. - It creates tension on the repair, which historically led to **higher recurrence rates** compared to mesh repairs. *Herniotomy* - **Herniotomy** is the surgical removal of the **hernia sac** without repairing the defect in the abdominal wall. - This procedure is typically reserved for **pediatric patients** with indirect inguinal hernias due to the good intrinsic muscle tone and relatively small defect, but it is not the primary repair for direct inguinal hernias in adults. *All of the options* - While all listed procedures are methods for hernia management, only the **Lichtenstein repair** is considered the most commonly performed repair for direct inguinal hernias in current practice. - The other options are less commonly performed or reserved for specific patient populations.

Q: A surgeon examined the case of hernia. Forcefully reduces the sac in abdominal cavity, without actually pushing back the contents. Identify the type of hernia.

Reduction en masse. ***Reduction en masse*** - **Reduction en masse** is a dangerous complication that occurs during attempted hernia reduction where the entire hernia sac, along with its incarcerated contents, is pushed back into the abdominal cavity. - The key feature is that **the contents remain trapped within the sac** after reduction, creating a false sense of successful reduction. - The scenario explicitly describes this: "forcefully reduces the sac... without actually pushing back the contents" - this is the textbook definition of reduction en masse. - This complication is dangerous because the incarcerated/strangulated bowel remains undetected inside the abdomen, potentially leading to **peritonitis and bowel necrosis**. - The hernia defect appears reduced externally, but the obstruction persists internally. *Incarcerated hernia* - An **incarcerated hernia** is the state where hernia contents are trapped and cannot be reduced back into the abdominal cavity. - This represents the **pre-existing condition** before the forceful reduction attempt was made. - While incarceration may have been present initially, the question asks about the outcome after the surgeon "forcefully reduces the sac" - this action creates a reduction en masse. *Sliding hernia* - A **sliding hernia** involves a retroperitoneal organ (colon, bladder, ovary) forming part of the hernia sac wall itself. - This is a structural variant unrelated to the reduction complication described in the scenario. *Maydl's hernia* - **Maydl's hernia** (W-hernia or retrograde strangulation) involves a loop of bowel where both ends remain in the abdomen while the intermediate segment is trapped in the hernia sac. - The strangulated segment is the intra-abdominal portion, not the part in the sac. - This is a specific type of hernia content configuration, not related to the reduction complication described.

Q: A 23-year-old man presents to the emergency department with bloody vomitus. The patient is an alcoholic and has presented similarly before. He is given ondansetron; however, he continues to vomit. The patient complains of sudden substernal chest pain and dysphagia after another bout of vomiting. His temperature is 99°F (37.2°C), blood pressure is 117/60 mmHg, pulse is 122/min, respirations are 15/min, and oxygen saturation is 99% on room air. Physical exam is notable for an uncomfortable man with subcutaneous emphysema in the patient’s neck and supraclavicular areas. Which of the following is the most likely diagnosis?

Esophageal rupture. ***Esophageal rupture*** - The sudden onset of **substernal chest pain** and **dysphagia** following forceful vomiting, particularly in a patient who continues to vomit despite antiemetics, is highly suggestive of esophageal rupture, also known as **Boerhaave syndrome**. - The presence of **subcutaneous emphysema** in the neck and supraclavicular areas is a classic sign, indicating gas leakage from the ruptured esophagus into the surrounding soft tissues, confirming the diagnosis. *Esophageal varices* - Esophageal varices are a common cause of **bloody vomitus** in alcoholics due to portal hypertension. However, they typically present with painless upper gastrointestinal bleeding and do not explain the sudden onset of **severe chest pain**, dysphagia, or subcutaneous emphysema following vomiting. - Variceal bleeding is primarily a **hemorrhagic event**, not a perforation event, and the patient's vitals (blood pressure 117/60 mmHg) do not indicate massive bleeding despite bloody vomitus. *Tension pneumothorax* - Tension pneumothorax presents with severe respiratory distress, hypotension, tracheal deviation, and absent breath sounds on the affected side. While it can cause **subcutaneous emphysema**, it does not typically follow a sudden bout of vomiting with preceding esophageal symptoms like dysphagia. - The patient's blood pressure is stable (117/60 mmHg), and there is no mention of severe respiratory distress or tracheal deviation, which would be crucial for a diagnosis of tension pneumothorax. *Mallory Weiss syndrome* - Mallory-Weiss syndrome involves a **mucosal tear** at the gastroesophageal junction due to forceful vomiting, leading to upper gastrointestinal bleeding, which explains the bloody vomitus. - However, it is a **partial-thickness tear** and does not typically cause the severe **substernal chest pain**, dysphagia, or subcutaneous emphysema associated with a full-thickness esophageal rupture.

Q: A 25-year-old man presents to his gastroenterologist for trouble swallowing. The patient states that whenever he eats solids, he regurgitates them back up. Given this patient's suspected diagnosis, the gastroenterologist performs a diagnostic test. Several hours later, the patient presents to the emergency department with chest pain and shortness of breath. His temperature is 99.5°F (37.5°C), blood pressure is 130/85 mmHg, pulse is 60/min, respirations are 12/min, and oxygen saturation is 99% on room air. On physical exam, the patient demonstrates a normal cardiopulmonary exam. His physical exam demonstrates no tenderness of the neck, a normal oropharynx, palpable crepitus above the clavicles, and minor lymphadenopathy. Which of the following is the best next step in management?

Gastrografin swallow. ***Gastrografin swallow*** - This patient likely has an **esophageal perforation** following a diagnostic procedure, possibly **endoscopy or manometry** for suspected achalasia given the dysphagia, regurgitation, and subsequent symptoms. - A **Gastrografin swallow** is the best initial diagnostic step because it is water-soluble, allowing for detection of a leak without causing severe complications if aspirated into the lungs or mediastinum. *Barium swallow* - This is generally not recommended for suspected esophageal perforation as **barium** is a corrosive agent that can cause a severe inflammatory reaction known as **mediastinitis** if it leaks into the mediastinum. - While it offers superior mucosal detail, the risks associated with extravasation outweigh its benefits in this emergent setting. *Urgent surgery* - While **surgical repair** is the definitive treatment for significant esophageal perforations, it should only be performed after definitive diagnosis and localization of the perforation. - Performing surgery without imaging confirmation would be inappropriate and potentially lead to unnecessary intervention or missing the actual site of injury. *Ultrasound* - **Ultrasound** has limited utility in diagnosing esophageal perforation due to the location of the esophagus behind the trachea and sternum, making it largely inaccessible to acoustic waves. - It also cannot effectively detect the leakage of contrast material from the esophageal lumen.

Question 1

A 38-year-old man with Crohn's disease presents with a 3-day history of increasing abdominal pain, distension, and inability to pass gas or stool. CT shows dilated small bowel loops with a transition point in the terminal ileum and bowel wall thickening. What factor most influences the decision between conservative and surgical management?

Accepted Answer

Presence of fever and leukocytosis

Answer

Degree of bowel wall thickening

Answer

History of previous bowel resections

Answer

Duration of symptoms

Question 2

A 28-year-old woman presents with right lower quadrant pain, nausea, and fever. CT shows appendiceal wall thickening and fat stranding. Her white blood cell count is 13,000/μL with 85% neutrophils. However, she is 12 weeks pregnant. What is the most appropriate management considering the clinical scenario?

Accepted Answer

Open appendectomy via right lower quadrant incision

Answer

Antibiotic therapy to avoid surgery in pregnancy

Answer

Observation with serial examinations due to pregnancy

Answer

Laparoscopic appendectomy regardless of pregnancy

Question 3

A 28-year-old pregnant woman at 32 weeks gestation presents with acute appendicitis. She is hemodynamically stable but has significant right lower quadrant pain and leukocytosis. The obstetric team is concerned about preterm labor risk, while the surgical team recommends immediate appendectomy. Synthesize the risks and benefits to determine the optimal management approach.

Accepted Answer

Immediate open appendectomy via muscle-splitting incision

Answer

Conservative management with antibiotics until delivery

Answer

Immediate delivery followed by appendectomy

Answer

Laparoscopic appendectomy with CO2 insufflation modifications

Question 4

A patient presents with an umbilical mass, which was previously reducible but has now become irreducible with discharge coming out, as shown in the image. What is the most appropriate management?

Accepted Answer

Umbilical excision with mesh hernioplasty

Answer

Umbilical excision

Answer

Mesh hernioplasty

Answer

Conservative

Question 5

Which of the following is not seen with ileal resections?

Accepted Answer

Cognitive improvement

Answer

Microcytic hypochromic anemia

Answer

Nuclear cytological asynchrony

Answer

Neurological manifestation

Question 6

Identify the procedure shown in the image, which is performed in a patient with recurrent GERD.

Accepted Answer

Nissen fundoplication

Answer

Partial gastrectomy

Answer

Esophageal banding

Answer

Toupet fundoplication

Question 7

Which of the following is the most commonly performed repair for a direct inguinal hernia?

Accepted Answer

Lichtenstein repair

Answer

Bassini's repair

Answer

Herniotomy

Answer

All of the options

Question 8

A surgeon examined the case of hernia. Forcefully reduces the sac in abdominal cavity, without actually pushing back the contents. Identify the type of hernia.

Accepted Answer

Reduction en masse

Answer

Sliding hernia

Answer

Incarcerated hernia

Answer

Maydl's hernia

Question 9

A 23-year-old man presents to the emergency department with bloody vomitus. The patient is an alcoholic and has presented similarly before. He is given ondansetron; however, he continues to vomit. The patient complains of sudden substernal chest pain and dysphagia after another bout of vomiting. His temperature is 99°F (37.2°C), blood pressure is 117/60 mmHg, pulse is 122/min, respirations are 15/min, and oxygen saturation is 99% on room air. Physical exam is notable for an uncomfortable man with subcutaneous emphysema in the patient’s neck and supraclavicular areas. Which of the following is the most likely diagnosis?

Accepted Answer

Esophageal rupture

Answer

Esophageal varices

Answer

Tension pneumothorax

Answer

Mallory Weiss syndrome

Question 10

A 25-year-old man presents to his gastroenterologist for trouble swallowing. The patient states that whenever he eats solids, he regurgitates them back up. Given this patient's suspected diagnosis, the gastroenterologist performs a diagnostic test. Several hours later, the patient presents to the emergency department with chest pain and shortness of breath. His temperature is 99.5°F (37.5°C), blood pressure is 130/85 mmHg, pulse is 60/min, respirations are 12/min, and oxygen saturation is 99% on room air. On physical exam, the patient demonstrates a normal cardiopulmonary exam. His physical exam demonstrates no tenderness of the neck, a normal oropharynx, palpable crepitus above the clavicles, and minor lymphadenopathy. Which of the following is the best next step in management?

Accepted Answer

Gastrografin swallow

Answer

Barium swallow

Answer

Urgent surgery

Answer

Ultrasound

Gastrointestinal Surgery — MCQs

Gastrointestinal Surgery — MCQs

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