Gastrointestinal Surgery — MCQs

A 35 year old man presents to Emergency with acute onset pain abdomen radiating to whole abdomen and abdominal distension for one day. On examination, he has tenderness and guarding all over abdomen with pulse rate of 100/m and BP 116/84 mmHg. Chest X-ray erect position shows gas under bilateral domes of diaphragm. Probably he is suffering from:

Q989

A 35 year old female had laparoscopic ventral hernia repair using polypropylene mesh in January 2015. In June 2015, she is again admitted with features of subacute intestinal obstruction and is managed conservatively. She continues to have recurrent colicky pain after that. Most probably she is suffering from:

Q990

All are rare types of lateral hernia of abdominal wall, EXCEPT:

Gastrointestinal Surgery Indian Medical PG Practice Questions and MCQs

Question 981: All of the following signs are considered in Alvarado score for acute appendicitis except

A. Elevated temperature
B. Rectal tenderness (Correct Answer)
C. Rebound tenderness
D. Right iliac fossa tenderness

Explanation: ***Rectal tenderness*** - While rectal tenderness can be a sign of appendicitis, it is **not included in the Alvarado score**. The Alvarado score focuses on more direct indicators of peritoneal irritation and systemic response. - The score is composed of symptoms like **migratory right iliac fossa pain**, anorexia, nausea/vomiting, and signs like right iliac fossa tenderness, rebound tenderness, elevated temperature, leukocytosis and shift to the left. *Elevated temperature* - An **elevated body temperature** (fever) is a recognized component of the Alvarado score, indicating a systemic inflammatory response. - This sign contributes one point to the total score. *Rebound tenderness* - **Rebound tenderness** in the right lower quadrant is a crucial sign of peritoneal irritation and is explicitly included in the Alvarado score. - This clinical finding contributes one point to the total score. *Right iliac fossa tenderness* - **Tenderness in the right iliac fossa** (RLQ tenderness) is a primary clinical sign of appendicitis and is a significant component of the Alvarado score. - This sign contributes two points to the total score, reflecting its importance.

Question 982: The scolicidal agents used in the surgery of a hydatid cyst include all of the following except

A. 15% glutaraldehyde (Correct Answer)
B. Absolute alcohol
C. 0.5% silver nitrate
D. 20% (hypertonic) saline

Explanation: ***15% glutaraldehyde*** - **15% glutaraldehyde** is NOT a standard scolicidal agent used during hydatid cyst surgery. - While glutaraldehyde is an effective disinfectant and sterilizing agent, it is **not routinely used as a scolicidal agent** in hydatid cyst surgery. - It is **highly toxic to tissues** and can cause severe local damage, making it unsuitable for intraoperative use in the peritoneal cavity. - Standard scolicidal agents are safer and more established for this specific purpose. *Absolute alcohol* - **Absolute alcohol (95-100% ethanol)** is an effective scolicidal agent used in hydatid cyst surgery. - It kills protoscolices rapidly and has documented efficacy in preventing **secondary hydatidosis**. - While it can be irritating to tissues, it is still employed clinically with appropriate precautions to minimize spillage. *0.5% silver nitrate* - **0.5% silver nitrate** solution is an effective scolicidal agent that causes disruption of the scolex membranes. - It has been shown to kill scolices and reduce the risk of **secondary hydatidosis**. - It is one of the established agents used in hydatid cyst surgery. *20% (hypertonic) saline* - **Hypertonic saline (20%)** is the **most widely used** scolicidal agent due to its osmotic effect, which causes scolices to rupture. - It is **relatively safe** and highly effective, making it the preferred choice in most surgical protocols. - Spillage should still be minimized to avoid complications like hypernatremia or electrolyte imbalance.

Question 983: Regarding laparoscopic cholecystectomy, which of the following statements is correct?

A. It is primarily done for cholecystitis in the third trimester of pregnancy
B. It is associated with higher rate of bile duct injuries than open cholecystectomy (Correct Answer)
C. It is safer than open cholecystectomy in patients with cardiorespiratory disease
D. It is contraindicated in acute cholecystitis

Explanation: ***It is associated with higher rate of bile duct injuries than open cholecystectomy*** - **Historically**, laparoscopic cholecystectomy has been associated with a **higher rate of bile duct injuries** (0.4-0.6%) compared to open cholecystectomy (0.1-0.2%), particularly during the **learning curve period** in the 1990s. - Contributing factors include **limited visualization**, **altered anatomy** in acute inflammation, **reliance on 2D imaging**, and **misidentification of anatomic structures**. - Bile duct injuries, such as **common bile duct (CBD) laceration** or **transection**, can lead to significant morbidity. - **Note**: With increased surgeon experience and adoption of the **critical view of safety** technique, these rates have decreased, though the risk remains slightly higher than open surgery in some studies. *It is primarily done for cholecystitis in the third trimester of pregnancy* - **Laparoscopic cholecystectomy** during pregnancy is generally considered safe for symptomatic **gallstone disease**, with the **second trimester** being the optimal time for surgery. - In the **third trimester**, surgical considerations like **increased uterine size**, technical difficulty, and **fetal well-being** make laparoscopic surgery more challenging, and it is usually **deferred until after delivery** unless an emergency. - The primary indication for **cholecystectomy** is symptomatic gallstones or complications like **acute cholecystitis**, not specifically third trimester pregnancy. *It is safer than open cholecystectomy in patients with cardiorespiratory disease* - While **laparoscopic cholecystectomy** is generally associated with **less postoperative pain**, **reduced pulmonary complications**, and **faster recovery**, it involves **pneumoperitoneum** (CO2 insufflation), which increases intra-abdominal pressure. - **Pneumoperitoneum** can cause **decreased venous return**, **increased systemic vascular resistance**, **hypercarbia**, and **decreased lung compliance**, which may stress patients with severe **cardiorespiratory disease**. - The safety profile depends on individual patient factors, severity of cardiorespiratory disease, and anesthetic management. In many cases, the benefits of minimally invasive surgery outweigh the risks, but careful patient selection is essential. *It is contraindicated in acute cholecystitis* - This is **incorrect**. **Laparoscopic cholecystectomy** is the **gold standard treatment** for acute cholecystitis. - **Early laparoscopic cholecystectomy** (within **72 hours** of symptom onset) is preferred as it reduces complications, shortens hospital stay, and has better outcomes compared to delayed surgery. - Acute cholecystitis is an **indication**, not a **contraindication** for laparoscopic approach.

Question 984: The following statements regarding Meckel's diverticulum in adults are true except

A. It usually presents on the mesenteric border of small intestine (Correct Answer)
B. Bleeding is a common complication
C. Incidental removal is often recommended in younger patients with risk factors
D. It is a remnant of omphalomesenteric duct

Explanation: ***It usually presents on the mesenteric border of small intestine*** - Meckel's diverticulum is a **true diverticulum** arising from the **anti-mesenteric border** of the ileum, typically 2 feet from the ileocecal valve. - Its mesenteric positioning would be highly atypical and contradict its embryological origin as a remnant of the **vitelline duct**. - This statement is **FALSE** - it arises from the anti-mesenteric border, making it the correct answer to this "except" question. *Bleeding is a common complication* - **Bleeding** is indeed a common complication in adults, often due to **ectopic gastric mucosa** (present in ~50% of cases) within the diverticulum causing ulceration. - This complication can manifest as **painless rectal bleeding**. - This statement is **TRUE**. *Incidental removal is often recommended in younger patients with risk factors* - Current evidence-based guidelines recommend **selective removal** based on risk factors including age <50 years, palpable abnormalities (thickening, nodularity), narrow neck, length >2cm, or presence of bands. - In younger patients with risk factors, the lifetime risk of complications justifies prophylactic removal. - In older adults or those without risk factors, the morbidity of resection may outweigh the lifetime risk of complications. - This statement is **TRUE**. *It is a remnant of omphalomesenteric duct* - Meckel's diverticulum is the most common congenital anomaly of the gastrointestinal tract, representing a persistent portion of the **embryonic vitelline (omphalomesenteric) duct**. - This duct normally connects the fetal midgut to the yolk sac and should completely regress by the 7th week of gestation. - This statement is **TRUE**.

Question 985: Dumping syndrome can occur after

A. Whipple's operation
B. Nissen fundoplication
C. Heller's operation
D. Billroth-II operation (Correct Answer)

Explanation: ***Billroth-II operation*** - This procedure involves a **gastrojejunostomy** where the stomach is connected directly to the jejunum, bypassing the duodenum. This design allows for rapid emptying of gastric contents into the small intestine. - The rapid transit of **hyperosmolar chyme** into the small bowel draws fluid into the lumen, leading to symptoms like abdominal pain, bloating, diarrhea, and vasomotor symptoms (e.g., palpitations, sweating) [1]. *Whipple's operation* - While it involves extensive gastrointestinal reconstruction, a **Whipple's operation** (pancreaticoduodenectomy) typically includes a gastrojejunostomy that is less prone to severe dumping than a Billroth II, as it often preserves a significant portion of the duodenum or creates a more controlled gastric outflow. - The primary aim of a Whipple is to resect the head of the pancreas, duodenum, gallbladder, and bile duct, with subsequent reconstruction involving multiple anastomoses, but usually not one specifically designed to rapidly empty into the jejunum without duodenal transit. *Nissen fundoplication* - This procedure is performed to treat **gastroesophageal reflux disease (GERD)** by wrapping the top of the stomach (fundus) around the lower esophagus to strengthen the lower esophageal sphincter. - It aims to prevent reflux, not to alter the rate of gastric emptying in a way that typically causes dumping syndrome. *Heller's operation* - **Heller's myotomy** is a surgical procedure to treat **achalasia**, a disorder where the lower esophageal sphincter fails to relax properly. It involves cutting the muscle fibers of the lower esophageal sphincter to facilitate the passage of food into the stomach. - This operation addresses a motility issue of the esophagus and generally does not affect gastric emptying in a manner that leads to dumping syndrome.

Question 986: What is the most common hernia in females?

A. Femoral hernia
B. Obturator hernia
C. Inguinal hernia (Correct Answer)
D. Spigelian hernia

Explanation: ***Inguinal hernia*** - **Inguinal hernias** are the most common type of hernia in females, accounting for approximately **70% of all hernias** in women. - While less common in females than males, inguinal hernias still represent the majority of hernias in the female population. - They occur through the **inguinal canal** and can be either indirect (through the deep inguinal ring) or direct (through Hesselbach's triangle). - Present as a **bulge in the groin** above the inguinal ligament. *Femoral hernia* - **Femoral hernias** are the second most common hernia in females, accounting for approximately 30% of hernias in women. - They have a **higher female-to-male ratio** compared to inguinal hernias (femoral hernias are more common in women than men relatively). - Occur through the **femoral canal** below the inguinal ligament, medial to the femoral vein. - Higher risk of **strangulation** due to the rigid boundaries of the femoral ring. - This option is incorrect because despite being relatively more common in females than males, femoral hernias are still **less common than inguinal hernias** in the female population overall. *Spigelian hernia* - A rare type of hernia occurring through the **Spigelian aponeurosis**, lateral to the rectus abdominis muscle. - Not specifically more common in females and represents a small fraction of all hernias. *Obturator hernia* - A very rare hernia passing through the **obturator foramen**. - More common in elderly, thin females but still extremely rare overall. - May present with **Howship-Romberg sign** (inner thigh pain on hip extension/rotation) due to obturator nerve compression.

Question 987: A young male is undergoing emergency surgery for a clinical diagnosis of acute appendicitis. Intraoperatively minimal pus was found but the appendix was normal. What is the next step of management?

A. Close the abdomen without doing anything
B. Search for perforated Meckel’s diverticulum (Correct Answer)
C. Right hemicolectomy
D. Appendectomy

Explanation: ***Search for perforated Meckel's diverticulum*** - When the appendix appears normal despite a strong clinical suspicion of appendicitis and **minimal pus** is present, it is crucial to investigate for alternative causes of **right lower quadrant pain** and localized peritonitis. - A **Meckel's diverticulum** is the most common congenital anomaly of the gastrointestinal tract (present in ~2% of population) and can mimic appendicitis when inflamed or perforated, necessitating a thorough search in such scenarios. - Standard practice: Examine the **terminal ileum up to 2 feet proximal to the ileocecal valve** to identify Meckel's diverticulum. *Close the abdomen without doing anything* - Closing the abdomen without identifying the source of the minimal pus and the patient's symptoms would be an **incomplete and potentially negligent** approach. - Doing so risks leaving an **undiagnosed and untreated problem**, which could lead to severe complications such as ongoing sepsis or perforation. *Right hemicolectomy* - **Right hemicolectomy** is an extensive surgical procedure typically reserved for conditions like large bowel obstructions, advanced tumors, or severe inflammatory bowel disease. - Performing a right hemicolectomy based on minimal pus and a normal appendix would be an **overly aggressive and inappropriate response** without a clear indication. *Appendectomy* - While an **incidental appendectomy** of a normal-appearing appendix is sometimes performed to prevent future diagnostic confusion, this alone **does not address the immediate problem**. - The critical error here is **failing to identify the source of the pus** that was found intraoperatively. Simply removing a normal appendix leaves the underlying pathology untreated. - The presence of pus mandates a thorough exploration to find its source—most commonly a **Meckel's diverticulum** in this clinical scenario.

Question 988: A 35 year old man presents to Emergency with acute onset pain abdomen radiating to whole abdomen and abdominal distension for one day. On examination, he has tenderness and guarding all over abdomen with pulse rate of 100/m and BP 116/84 mmHg. Chest X-ray erect position shows gas under bilateral domes of diaphragm. Probably he is suffering from:

A. Acute pancreatitis
B. Appendicular perforation
C. Ruptured liver abscess
D. Gastric perforation (Correct Answer)

Explanation: ***Gastric perforation*** - The presence of **bilateral pneumoperitoneum** (gas under both domes of diaphragm) on erect chest X-ray is **pathognomonic for hollow viscus perforation**, with gastric/duodenal perforations being the most common cause. - The clinical presentation of **acute onset generalized abdominal pain**, **tenderness and guarding all over abdomen**, combined with bilateral free air perfectly matches **gastric perforation**. *Acute pancreatitis* - Typically presents with severe **epigastric pain radiating to the back**, often with elevated **serum amylase/lipase**, but does **NOT cause pneumoperitoneum**. - While severe pancreatitis can cause peritonitis, it involves **inflammatory exudate** rather than free air under the diaphragm. *Appendicular perforation* - Usually presents with **localized right iliac fossa pain** initially before generalizing, unlike the immediate generalized presentation described. - Though perforation can cause pneumoperitoneum, it's **less likely to cause prominent bilateral free air** compared to upper GI perforations. *Ruptured liver abscess* - Would typically have a preceding history of **fever, right upper quadrant pain**, and systemic signs of infection before rupture. - Rupture releases **purulent material and exudate** into the peritoneum rather than free air, so **pneumoperitoneum would not be present**.

Question 989: A 35 year old female had laparoscopic ventral hernia repair using polypropylene mesh in January 2015. In June 2015, she is again admitted with features of subacute intestinal obstruction and is managed conservatively. She continues to have recurrent colicky pain after that. Most probably she is suffering from:

A. Recurrence of hernia
B. New hernia
C. Acute appendicitis
D. Bowel adhesion to mesh (Correct Answer)

Explanation: ***Bowel adhesion to mesh*** - The patient's history of **laparoscopic ventral hernia repair** using polypropylene mesh, followed by recurrent colicky pain and a subacute intestinal obstruction, strongly suggests **adhesion formation involving the mesh and bowel**. - **Polypropylene mesh** is known to induce an inflammatory response, leading to scar tissue formation and potential adhesion to nearby organs, which can cause chronic pain and obstruction. *Recurrence of hernia* - While hernia recurrence is possible, the presentation primarily with **recurrent colicky pain** and a single episode of **subacute intestinal obstruction** is less characteristic of a simple recurrence, which often presents with a palpable bulge or more direct obstructive symptoms. - The conservative management of the obstruction episode further suggests a non-strangulated or irreducible recurrence, which would typically warrant surgical intervention if severely symptomatic. *New hernia* - A new hernia is unlikely given the history of a recent repair at a different site, unless specified. - The symptoms are more directly attributable to complications related to the previous surgery and the implanted mesh. *Acute appendicitis* - **Acute appendicitis** typically presents with right lower quadrant pain, fever, and leukocytosis, which are not described in the patient's symptoms of recurrent colicky pain and subacute obstruction. - The onset of symptoms months after a hernia repair, and their chronic, recurrent nature, makes acute appendicitis an improbable diagnosis.

Question 990: All are rare types of lateral hernia of abdominal wall, EXCEPT:

A. Spigelian
B. Obturator
C. Inferior lumbar (Correct Answer)
D. Superior lumbar

Explanation: ***Inferior lumbar*** - While still considered rare, **inferior lumbar hernias** (also known as **Petit's hernias**) are relatively more common among the listed lateral hernias. - They occur through the **inferior lumbar triangle** (Petit's triangle), bounded by the latissimus dorsi, external oblique, and iliac crest. - Among lumbar hernias, inferior lumbar hernias comprise approximately **20-25%** of cases, making them less rare than superior lumbar hernias. *Spigelian* - **Spigelian hernias** are rare lateral hernias occurring through the **Spigelian aponeurosis** (fascia of transversus abdominis muscle lateral to the rectus abdominis). - Account for only **0.12-2%** of all abdominal wall hernias. - Often **interparietal** (between muscle layers), making clinical diagnosis difficult. *Obturator* - **Obturator hernias** are extremely rare, accounting for **0.05-0.4%** of all hernias. - Protrude through the **obturator canal** in the pelvis. - More common in elderly, emaciated women and often present as small bowel obstruction. - **Note:** Technically a pelvic hernia rather than an abdominal wall hernia, but included in rare lateral hernia classifications. *Superior lumbar* - **Superior lumbar hernias** (also known as **Grynfeltt-Lesshaft hernias**) are the rarest type, comprising only **1-2%** of all abdominal wall hernias. - Occur through the **superior lumbar triangle** (Grynfeltt's triangle), bounded by the 12th rib, erector spinae, and internal oblique. - More prone to incarceration than inferior lumbar hernias.

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Esophageal Disorders

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Gastric Disorders

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Small Intestine Pathology

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Appendicitis

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Inflammatory Bowel Disease

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Intestinal Obstruction

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Gastrointestinal Bleeding

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Diverticular Disease

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Anorectal Disorders

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Colorectal Neoplasms

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Gastrointestinal Stomas

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Bariatric Surgery Principles

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