Gastrointestinal Surgery Practice Questions

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

Rectal tenderness. ***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.

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

15% glutaraldehyde. ***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.

Q: Dumping syndrome can occur after

Billroth-II operation. ***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.

Q: What is the most common hernia in females?

Inguinal hernia. ***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.

Q: 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?

Search for perforated Meckel’s diverticulum. ***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.

Q: 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:

Gastric perforation. ***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**.

Q: 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:

Bowel adhesion to mesh. ***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.

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

Inferior lumbar. ***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.

Question 1

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

Accepted Answer

Rectal tenderness

Answer

Elevated temperature

Answer

Rebound tenderness

Answer

Right iliac fossa tenderness

Question 2

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

Accepted Answer

15% glutaraldehyde

Answer

Absolute alcohol

Answer

0.5% silver nitrate

Answer

20% (hypertonic) saline

Question 3

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

Accepted Answer

It is associated with higher rate of bile duct injuries than open cholecystectomy

Answer

It is primarily done for cholecystitis in the third trimester of pregnancy

Answer

It is safer than open cholecystectomy in patients with cardiorespiratory disease

Answer

It is contraindicated in acute cholecystitis

Question 4

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

Accepted Answer

It usually presents on the mesenteric border of small intestine

Answer

Bleeding is a common complication

Answer

Incidental removal is often recommended in younger patients with risk factors

Answer

It is a remnant of omphalomesenteric duct

Question 5

Dumping syndrome can occur after

Accepted Answer

Billroth-II operation

Answer

Whipple's operation

Answer

Nissen fundoplication

Answer

Heller's operation

Question 6

What is the most common hernia in females?

Accepted Answer

Inguinal hernia

Answer

Femoral hernia

Answer

Obturator hernia

Answer

Spigelian hernia

Question 7

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?

Accepted Answer

Search for perforated Meckel’s diverticulum

Answer

Close the abdomen without doing anything

Answer

Right hemicolectomy

Answer

Appendectomy

Question 8

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:

Accepted Answer

Gastric perforation

Answer

Acute pancreatitis

Answer

Appendicular perforation

Answer

Ruptured liver abscess

Question 9

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:

Accepted Answer

Bowel adhesion to mesh

Answer

Recurrence of hernia

Answer

New hernia

Answer

Acute appendicitis

Question 10

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

Accepted Answer

Inferior lumbar

Answer

Spigelian

Answer

Obturator

Answer

Superior lumbar

Gastrointestinal Surgery — MCQs

Gastrointestinal Surgery — MCQs

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