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Egyptian Board General Surgery study materials
Egyptian Board General Surgery study resources

Egyptian Board General Surgery practice questions

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Question 1Basic Sciences Applied to Surgery (anatomy, physiology, pathology, microbiology, pharmacology)

During a laparoscopic cholecystectomy, the surgeon must identify the critical view of safety. Which anatomical structure must be clearly demonstrated before clipping and cutting the cystic duct and cystic artery?

  1. The right hepatic artery and portal vein
  2. The common bile duct and pancreatic duct junction
  3. The cystic plate (liver bed) cleared of fat and fibrous tissue Correct answer.
  4. The hepatoduodenal ligament with the portal triad

Explanation

The critical view of safety requires clearing the hepatocystic triangle of fat and fibrous tissue and separating the gallbladder from the cystic plate, leaving only two structures entering the gallbladder. This ensures the cystic duct and cystic artery are correctly identified before division.

Question 2Basic Sciences Applied to Surgery (anatomy, physiology, pathology, microbiology, pharmacology)

A 45-year-old man presents with a 3 cm firm, painless mass in the tail of the parotid gland. Fine-needle aspiration suggests a pleomorphic adenoma. Which anatomical structure is most at risk during surgical excision of this tumor?

  1. The marginal mandibular branch of the facial nerve Correct answer.
  2. The lingual nerve
  3. The hypoglossal nerve
  4. The spinal accessory nerve

Explanation

The marginal mandibular branch of the facial nerve courses near the inferior border of the mandible and is at risk during surgery in the tail of the parotid gland. Injury leads to weakness of the depressor anguli oris and asymmetry of the lower lip.

Question 3Basic Sciences Applied to Surgery (anatomy, physiology, pathology, microbiology, pharmacology)

A 60-year-old woman undergoes total thyroidectomy. Postoperatively, she develops perioral numbness and carpopedal spasm. Which electrolyte abnormality is the most likely cause?

  1. Hypocalcemia Correct answer.
  2. Hyperkalemia
  3. Hypomagnesemia
  4. Hypernatremia

Explanation

Transient hypocalcemia due to parathyroid gland ischemia or inadvertent removal is a common complication of total thyroidectomy. It presents with perioral paresthesia, carpopedal spasm, and a positive Chvostek or Trousseau sign.

Question 4Basic Sciences Applied to Surgery (anatomy, physiology, pathology, microbiology, pharmacology)

A 70-year-old man with a history of atrial fibrillation presents with acute abdominal pain out of proportion to examination. CT angiography shows occlusion of the superior mesenteric artery. Which segment of the bowel is most likely to be ischemic?

  1. The rectum
  2. The stomach
  3. The jejunum and ileum Correct answer.
  4. The duodenum

Explanation

The superior mesenteric artery supplies the midgut, which includes the jejunum, ileum, and right colon. Occlusion therefore causes ischemia of these segments, while the stomach and duodenum receive collateral supply and the rectum is supplied by the inferior mesenteric artery.

Question 5Basic Sciences Applied to Surgery (anatomy, physiology, pathology, microbiology, pharmacology)

A 55-year-old man with cirrhosis and portal hypertension has a large bleeding varix at the gastroesophageal junction. Which venous anastomosis is responsible for this portosystemic shunt?

  1. Splenic vein and left renal vein
  2. Left gastric vein and esophageal veins Correct answer.
  3. Paraumbilical veins and epigastric veins
  4. Superior rectal vein and middle rectal vein

Explanation

Esophageal varices develop at the anastomosis between the left gastric (coronary) vein, a tributary of the portal vein, and the esophageal veins, which drain into the azygos system. This is the most common site of variceal bleeding in portal hypertension.

Question 6Basic Sciences Applied to Surgery (anatomy, physiology, pathology, microbiology, pharmacology)

A 30-year-old woman is scheduled for surgery and is found to have a prolonged activated partial thromboplastin time (aPTT) with a normal prothrombin time (PT). Which coagulation factor deficiency is most likely?

  1. Fibrinogen
  2. Factor VII
  3. Factor VIII Correct answer.
  4. Factor X

Explanation

The aPTT measures the intrinsic and common pathways, while the PT measures the extrinsic and common pathways. Isolated prolongation of the aPTT suggests a deficiency in factor VIII, IX, XI, or XII, with factor VIII deficiency (hemophilia A) being the most common.

Question 7Basic Sciences Applied to Surgery (anatomy, physiology, pathology, microbiology, pharmacology)

A 65-year-old man with chronic obstructive pulmonary disease undergoes emergency laparotomy. Which acid-base disturbance is most likely to occur postoperatively due to retained carbon dioxide?

  1. Metabolic alkalosis
  2. Respiratory alkalosis
  3. Respiratory acidosis Correct answer.
  4. Metabolic acidosis

Explanation

Retention of carbon dioxide due to hypoventilation, common in patients with COPD after surgery, leads to respiratory acidosis. The increase in PaCO2 lowers the pH and triggers renal compensation with bicarbonate retention.

Question 8Basic Sciences Applied to Surgery (anatomy, physiology, pathology, microbiology, pharmacology)

A 50-year-old woman develops a wound infection after appendectomy. Gram stain shows gram-positive cocci in clusters, and the organism is catalase-positive and coagulase-positive. Which organism is most likely responsible?

  1. Pseudomonas aeruginosa
  2. Escherichia coli
  3. Streptococcus pyogenes
  4. Staphylococcus aureus Correct answer.

Explanation

Staphylococcus aureus is a gram-positive coccus that grows in clusters, is catalase-positive, and is coagulase-positive. It is a common cause of surgical site infections, especially from endogenous skin flora.

Question 9Basic Sciences Applied to Surgery (anatomy, physiology, pathology, microbiology, pharmacology)

A 40-year-old man is admitted with a perforated peptic ulcer. Which antibiotic regimen is appropriate for empirical coverage of gram-negative bacilli and anaerobes?

  1. Azithromycin alone
  2. Penicillin G alone
  3. Vancomycin alone
  4. Ceftriaxone plus metronidazole Correct answer.

Explanation

Perforated peptic ulcer leads to chemical and bacterial peritonitis with gram-negative bacilli and anaerobes. A third-generation cephalosporin such as ceftriaxone combined with metronidazole provides appropriate empirical coverage.

Question 10Basic Sciences Applied to Surgery (anatomy, physiology, pathology, microbiology, pharmacology)

A 25-year-old man is given succinylcholine during induction of anesthesia. He develops masseter muscle rigidity and hyperthermia. Which pharmacological agent is the specific treatment for this condition?

  1. Neostigmine
  2. Dantrolene Correct answer.
  3. Atropine
  4. Naloxone

Explanation

Malignant hyperthermia is a pharmacogenetic disorder triggered by volatile anesthetics and depolarizing muscle relaxants such as succinylcholine. Dantrolene, which inhibits calcium release from the sarcoplasmic reticulum, is the specific antidote.

Question 11Basic Sciences Applied to Surgery (anatomy, physiology, pathology, microbiology, pharmacology)

A 55-year-old woman with breast cancer is started on tamoxifen. Which serious adverse effect requires monitoring during therapy?

  1. Nephrotoxicity
  2. Cardiotoxicity
  3. Endometrial carcinoma Correct answer.
  4. Pulmonary fibrosis

Explanation

Tamoxifen is a selective estrogen receptor modulator that acts as an antagonist in breast tissue but as a partial agonist in the endometrium. This can lead to endometrial hyperplasia and carcinoma, so abnormal vaginal bleeding warrants investigation.

Question 12Basic Sciences Applied to Surgery (anatomy, physiology, pathology, microbiology, pharmacology)

A 65-year-old man with peripheral arterial disease undergoes angiography. Which artery is most commonly used for percutaneous access in this procedure?

  1. Femoral artery Correct answer.
  2. Axillary artery
  3. Radial artery
  4. Carotid artery

Explanation

The common femoral artery is the most commonly used access site for diagnostic and interventional angiography because of its large caliber, superficial location, and compressibility. Radial access is an alternative but is less common for peripheral angiography.

Question 13Basic Sciences Applied to Surgery (anatomy, physiology, pathology, microbiology, pharmacology)

A 60-year-old man with a history of alcohol abuse presents with hematemesis. Endoscopy shows bleeding esophageal varices. Which pharmacological agent is used to reduce portal pressure acutely?

  1. Epinephrine
  2. Propranolol
  3. Octreotide Correct answer.
  4. Vitamin K

Explanation

Octreotide, a somatostatin analogue, causes splanchnic vasoconstriction and reduces portal venous pressure, making it effective for acute variceal bleeding. Propranolol is used for prophylaxis, not acute control.

Question 14Basic Sciences Applied to Surgery (anatomy, physiology, pathology, microbiology, pharmacology)

A 30-year-old woman has a suspected ectopic pregnancy. Which structure is most likely to be the site of implantation if the pregnancy is ectopic?

  1. Ovary
  2. Abdominal cavity
  3. Ampulla of the fallopian tube Correct answer.
  4. Cervix

Explanation

The ampulla is the most common site of ectopic pregnancy, accounting for about 70% of cases. Other sites include the isthmus, fimbria, ovary, and abdominal cavity, but they are much less frequent.

Question 15Basic Sciences Applied to Surgery (anatomy, physiology, pathology, microbiology, pharmacology)

A 50-year-old man undergoes surgery for a tumor in the pancreatic head. Which structure is most likely to be involved first by direct extension of the tumor?

  1. The duodenum
  2. The superior mesenteric artery
  3. The common bile duct Correct answer.
  4. The portal vein

Explanation

Tumors of the pancreatic head are anatomically close to the common bile duct and often cause obstructive jaundice by direct compression or invasion. The portal vein and superior mesenteric artery are also nearby but are typically involved later.

Question 16Basic Sciences Applied to Surgery (anatomy, physiology, pathology, microbiology, pharmacology)

A 70-year-old woman has a large femoral hernia. Which anatomical structure forms the medial boundary of the femoral ring?

  1. Pectineal ligament
  2. Inguinal ligament
  3. Femoral vein
  4. Lacunar ligament Correct answer.

Explanation

The femoral ring is bounded medially by the lacunar ligament, laterally by the femoral vein, anteriorly by the inguinal ligament, and posteriorly by the pectineal ligament. The lacunar ligament is the key medial boundary.

Question 17Basic Sciences Applied to Surgery (anatomy, physiology, pathology, microbiology, pharmacology)

A 40-year-old man sustains a stab wound to the right upper quadrant. He is hypotensive and has a positive FAST scan. Which organ is most commonly injured in blunt and penetrating trauma to the right upper quadrant?

  1. Liver Correct answer.
  2. Kidney
  3. Pancreas
  4. Spleen

Explanation

The liver is the most commonly injured intra-abdominal organ in both blunt and penetrating trauma, particularly in right upper quadrant injuries. Its large size and fixed position make it vulnerable.

Question 18Basic Sciences Applied to Surgery (anatomy, physiology, pathology, microbiology, pharmacology)

A 55-year-old man with cirrhosis and ascites is undergoing surgery. Which physiological change is most likely to affect drug metabolism?

  1. Increased hepatic blood flow
  2. Increased renal clearance
  3. Decreased plasma protein binding Correct answer.
  4. Increased first-pass metabolism

Explanation

Cirrhosis reduces hepatic synthesis of albumin, leading to decreased plasma protein binding and an increased free fraction of drugs. This can increase the pharmacological effect and risk of toxicity.

Question 19Basic Sciences Applied to Surgery (anatomy, physiology, pathology, microbiology, pharmacology)

A 60-year-old man with a history of myocardial infarction is undergoing major surgery. Which perioperative medication has been shown to reduce the risk of cardiac events?

  1. Calcium channel blockers
  2. Alpha-blockers
  3. Beta-blockers Correct answer.
  4. Nitrates

Explanation

Perioperative beta-blockade reduces myocardial oxygen demand and has been shown to decrease cardiac morbidity in high-risk patients undergoing major surgery. However, it must be initiated cautiously to avoid hypotension and bradycardia.

Question 20Basic Sciences Applied to Surgery (anatomy, physiology, pathology, microbiology, pharmacology)

A 45-year-old woman is diagnosed with a pheochromocytoma. Which preoperative medication regimen is most appropriate to control blood pressure and prevent intraoperative hypertensive crisis?

  1. ACE inhibitor alone
  2. Beta-blocker followed by alpha-blocker
  3. Diuretic alone
  4. Alpha-blocker followed by beta-blocker Correct answer.

Explanation

Preoperative preparation for pheochromocytoma requires alpha-blockade first to control blood pressure and allow volume expansion, followed by beta-blockade to control reflex tachycardia. Giving a beta-blocker first can precipitate a hypertensive crisis due to unopposed alpha stimulation.

Question 21Surgical Principles and Perioperative Care (asepsis, wound healing, hemostasis, fluid and electrolyte management, nutrition, transfusion, anesthesia basics)

During a clean elective hernia repair, the surgeon performs surgical hand antisepsis with a chlorhexidine-based scrub. Which statement best describes the primary purpose of this step in aseptic technique?

  1. It sterilizes the skin of the hands and forearms so that no microorganisms remain
  2. It removes all bacterial spores from the subungual spaces, which are the main source of infection
  3. It reduces the transient and resident flora on the hands to lower the risk of surgical site contamination Correct answer.
  4. It creates a chemical barrier that prevents glove perforation from introducing bacteria

Explanation

Surgical hand antisepsis aims to reduce, not eliminate, transient and resident skin flora to a level that minimizes wound contamination during the operation. Skin cannot be sterilized, and spores in subungual areas are reduced by mechanical cleaning rather than eradicated. The effect is a quantitative reduction in bioburden, not a physical barrier against glove tears.

Question 22Surgical Principles and Perioperative Care (asepsis, wound healing, hemostasis, fluid and electrolyte management, nutrition, transfusion, anesthesia basics)

A 45-year-old man is scheduled for elective laparoscopic cholecystectomy. According to standard preoperative fasting guidance for adults, which fasting interval is most appropriate before induction of anesthesia?

  1. Clear liquids for 2 hours and light solids for 6 hours Correct answer.
  2. Solids for 4 hours and clear liquids for 1 hour
  3. No fasting is required for laparoscopic procedures
  4. Clear liquids for 6 hours and light solids for 12 hours

Explanation

Current adult fasting guidance recommends at least 2 hours for clear liquids and 6 hours for light meals before anesthesia to reduce aspiration risk while avoiding unnecessary dehydration. Prolonged fasting beyond these intervals offers no added safety and may cause discomfort or hypoglycemia. Solid food requires longer gastric emptying than clear fluids.

Question 23Surgical Principles and Perioperative Care (asepsis, wound healing, hemostasis, fluid and electrolyte management, nutrition, transfusion, anesthesia basics)

A postoperative patient has a serum sodium of 122 mmol/L and is symptomatic with confusion. Which fluid strategy is most appropriate for initial correction?

  1. Slow correction with hypertonic saline aiming for a limited rise over 24 hours Correct answer.
  2. Rapid infusion of 5% dextrose to dilute the sodium further
  3. Rapid correction with hypertonic saline to reach normal sodium within 4 hours
  4. Free water restriction alone with no hypertonic saline

Explanation

Symptomatic hyponatremia requires hypertonic saline, but correction must be gradual because overly rapid elevation risks osmotic demyelination. A controlled rise over 24 hours, generally limited to about 8–10 mmol/L in the first day, balances symptom relief against neurologic injury. Rapid normalization is dangerous.

Question 24Surgical Principles and Perioperative Care (asepsis, wound healing, hemostasis, fluid and electrolyte management, nutrition, transfusion, anesthesia basics)

A trauma patient receives 6 units of packed red blood cells in the resuscitation bay. Which laboratory abnormality is most likely to require calcium replacement?

  1. Hyperkalemia
  2. Hypernatremia
  3. Hypocalcemia Correct answer.
  4. Hypochloremia

Explanation

Citrate used as a preservative in stored blood binds ionized calcium, and massive transfusion can cause hypocalcemia with neuromuscular irritability and cardiac effects. Hyperkalemia can also occur from stored red cells, but citrate-induced calcium binding is the classic reason for calcium replacement. Sodium and chloride changes are not the primary concern.

Question 25Surgical Principles and Perioperative Care (asepsis, wound healing, hemostasis, fluid and electrolyte management, nutrition, transfusion, anesthesia basics)

A patient with a clean-contaminated wound is being assessed on postoperative day 5. Which finding most strongly suggests a surgical site infection rather than normal healing?

  1. Localized erythema with warmth and purulent discharge Correct answer.
  2. Mild serous drainage from the wound edges
  3. A healing ridge with mild tenderness
  4. A small amount of clear fluid under an intact dressing

Explanation

Purulent discharge with spreading erythema and warmth indicates infection and requires evaluation and likely drainage. Serous drainage, mild tenderness, and a healing ridge are common in uncomplicated wounds. Clear fluid under an intact dressing is not itself evidence of infection.

Question 26Surgical Principles and Perioperative Care (asepsis, wound healing, hemostasis, fluid and electrolyte management, nutrition, transfusion, anesthesia basics)

A 30-year-old woman is undergoing surgery and has a documented allergy to latex. Which intraoperative measure is most appropriate to reduce the risk of an allergic reaction?

  1. Avoid latex-containing equipment and use a latex-free environment Correct answer.
  2. Use latex gloves but double-glove over them
  3. Premedicate with antihistamines and proceed with standard latex gloves
  4. Place a latex tourniquet over the gown to minimize skin contact

Explanation

The definitive approach for latex allergy is avoidance of latex-containing products and creation of a latex-free environment, including gloves, tubing, and tourniquets. Premedication does not make latex exposure safe in a sensitized patient. Double-gloving over latex still exposes the patient to latex allergens.

Question 27Surgical Principles and Perioperative Care (asepsis, wound healing, hemostasis, fluid and electrolyte management, nutrition, transfusion, anesthesia basics)

Which statement about the phases of wound healing is most accurate for a primarily closed clean surgical incision?

  1. Fibroblasts are the dominant cells in the first 24 hours of healing
  2. Inflammatory, proliferative, and remodeling phases overlap, with wound strength steadily increasing over weeks to months Correct answer.
  3. Wound strength returns to that of uninjured skin by the end of the first week
  4. Collagen deposition begins immediately and reaches maximum strength by day 3

Explanation

Wound healing proceeds through overlapping inflammatory, proliferative, and remodeling phases, and tensile strength increases gradually over weeks and months. It does not peak within days or return to normal skin strength in the first week. Neutrophils and macrophages, not fibroblasts, dominate the earliest phase.

Question 28Surgical Principles and Perioperative Care (asepsis, wound healing, hemostasis, fluid and electrolyte management, nutrition, transfusion, anesthesia basics)

A patient with acute blood loss has a hemoglobin of 7.2 g/dL and is hemodynamically stable with no active bleeding. According to restrictive transfusion principles, which approach is most appropriate?

  1. Consider transfusion based on clinical status and symptoms rather than the hemoglobin value alone Correct answer.
  2. Withhold transfusion until hemoglobin falls below 5 g/dL
  3. Transfuse immediately regardless of symptoms
  4. Transfuse platelets instead of red cells

Explanation

Restrictive transfusion practice uses hemoglobin thresholds around 7–8 g/dL together with clinical assessment, because stable patients may tolerate lower values. Transfusion decisions should incorporate symptoms, ongoing bleeding, and comorbidity rather than a single number. Platelets are not a substitute for red cell oxygen-carrying capacity.

Question 29Surgical Principles and Perioperative Care (asepsis, wound healing, hemostasis, fluid and electrolyte management, nutrition, transfusion, anesthesia basics)

A patient with a large bowel obstruction is being prepared for surgery. Which fluid and electrolyte abnormality is most likely to be present on admission?

  1. Metabolic alkalosis with hypokalemia
  2. Hypochloremic metabolic alkalosis Correct answer.
  3. Hyperkalemic metabolic acidosis
  4. Respiratory acidosis with hypernatremia

Explanation

Vomiting and sequestration in bowel obstruction can cause loss of chloride and hydrogen ions, producing a hypochloremic metabolic alkalosis, often with hypokalemia. Hyperkalemic acidosis is more typical of renal failure or acidosis states. Respiratory acidosis is not the primary pattern in bowel obstruction.

Question 30Surgical Principles and Perioperative Care (asepsis, wound healing, hemostasis, fluid and electrolyte management, nutrition, transfusion, anesthesia basics)

A patient is undergoing a major abdominal operation and is receiving balanced crystalloid. Which principle best guides intraoperative fluid administration?

  1. Give the maximum tolerated volume to prevent hypoperfusion
  2. Use goal-directed therapy guided by clinical and hemodynamic endpoints to avoid both hypovolemia and overload Correct answer.
  3. Administer only colloids because crystalloids do not remain intravascular
  4. Restrict all fluids until blood loss exceeds 2 liters

Explanation

Goal-directed fluid therapy uses clinical and hemodynamic targets to balance adequate perfusion against the harms of fluid overload. Both excessive and inadequate fluid can impair wound healing and organ function. Colloids are not required for all patients and carry their own risks.

Question 31Surgical Principles and Perioperative Care (asepsis, wound healing, hemostasis, fluid and electrolyte management, nutrition, transfusion, anesthesia basics)

A patient with severe acute pancreatitis has been unable to eat for 7 days. Which nutritional strategy is most appropriate?

  1. Start total parenteral nutrition immediately regardless of gut function
  2. Restrict protein to prevent pancreatic stimulation
  3. Continue no oral intake and give only intravenous dextrose
  4. Start enteral nutrition, preferably nasojejunal, when tolerated Correct answer.

Explanation

Enteral nutrition is preferred in severe acute pancreatitis once the patient is hemodynamically stable, because it maintains gut integrity and reduces infectious complications. Parenteral nutrition is reserved for patients who cannot tolerate enteral feeding. Protein restriction is not appropriate and worsens catabolism.

Question 32Surgical Principles and Perioperative Care (asepsis, wound healing, hemostasis, fluid and electrolyte management, nutrition, transfusion, anesthesia basics)

A patient is scheduled for elective surgery and is taking warfarin for atrial fibrillation. Which perioperative consideration is most important?

  1. Replace warfarin with aspirin on the morning of surgery
  2. Continue warfarin at the usual dose through the operation
  3. Plan perioperative anticoagulation management with the team, often including bridging, based on thrombotic and bleeding risk Correct answer.
  4. Stop warfarin 1 day before surgery without any monitoring

Explanation

Perioperative warfarin management requires balancing the risk of thromboembolism against bleeding, often with bridging anticoagulation for high-risk patients and INR monitoring. Simply continuing or abruptly stopping warfarin without a plan is unsafe. Aspirin is not an equivalent substitute for anticoagulation in atrial fibrillation.

Question 33Surgical Principles and Perioperative Care (asepsis, wound healing, hemostasis, fluid and electrolyte management, nutrition, transfusion, anesthesia basics)

During a procedure, a patient receives a local anesthetic and develops perioral numbness, tinnitus, and confusion. Which complication should be suspected first?

  1. Hypoglycemia
  2. Local anesthetic systemic toxicity Correct answer.
  3. Anaphylaxis to latex
  4. Malignant hyperthermia

Explanation

Perioral numbness, tinnitus, and confusion are early neurologic features of local anesthetic systemic toxicity, which can progress to seizures and cardiac arrest. Malignant hyperthermia presents with hyperthermia and rigidity after volatile agents or succinylcholine. Anaphylaxis and hypoglycemia do not typically produce this specific sequence.

Question 34Surgical Principles and Perioperative Care (asepsis, wound healing, hemostasis, fluid and electrolyte management, nutrition, transfusion, anesthesia basics)

A patient with a chronic nonhealing ulcer has a wound culture growing Pseudomonas aeruginosa. Which factor most directly impairs wound healing in this setting?

  1. Adequate protein intake
  2. Use of moist wound dressings
  3. Persistent bacterial bioburden and inflammation Correct answer.
  4. Mild surrounding erythema

Explanation

High bacterial burden sustains inflammation, damages tissue, and delays collagen deposition and epithelialization. Erythema may be part of the inflammatory response but is not itself the main driver. Moist dressings and adequate protein support rather than impair healing.

Question 35Surgical Principles and Perioperative Care (asepsis, wound healing, hemostasis, fluid and electrolyte management, nutrition, transfusion, anesthesia basics)

A patient with a small surgical wound has oozing that does not stop with direct pressure. Which initial hemostatic measure is most appropriate?

  1. Reapply direct pressure with gauze and elevate the area if feasible Correct answer.
  2. Explore the wound under general anesthesia as the first step
  3. Immediately transfuse fresh frozen plasma
  4. Apply a tourniquet proximal to the wound

Explanation

The first step in controlling local bleeding is sustained direct pressure, often with elevation, to promote clot formation. Tourniquets are reserved for limb-threatening hemorrhage and are not appropriate for a small wound. Plasma transfusion and operative exploration are later steps if pressure fails.

Question 36Surgical Principles and Perioperative Care (asepsis, wound healing, hemostasis, fluid and electrolyte management, nutrition, transfusion, anesthesia basics)

A patient is being evaluated for preoperative risk. Which finding is most consistent with an increased risk of aspiration during induction of anesthesia?

  1. A history of seasonal allergies
  2. Full stomach or delayed gastric emptying Correct answer.
  3. Mild anemia
  4. A history of well-controlled hypertension

Explanation

A full stomach or delayed gastric emptying increases the volume and acidity of gastric contents available for aspiration during induction. Hypertension, mild anemia, and seasonal allergies do not directly increase aspiration risk. Airway protection strategies are planned accordingly.

Question 37Surgical Principles and Perioperative Care (asepsis, wound healing, hemostasis, fluid and electrolyte management, nutrition, transfusion, anesthesia basics)

A patient with a large burn is in the resuscitation phase. Which fluid principle best guides initial management?

  1. Give potassium-rich fluids to correct expected hypokalemia
  2. Restrict fluids to avoid edema
  3. Calculate crystalloid requirements from burn size and body weight and titrate to urine output Correct answer.
  4. Use colloid-only resuscitation from the start

Explanation

Burn resuscitation uses formulas based on burn surface area and body weight to estimate crystalloid needs, then titrates to clinical endpoints such as urine output. Colloid-only regimens are not standard initial therapy, and fluid restriction worsens hypoperfusion. Potassium is typically not the focus of initial fluid choice.

Question 38Surgical Principles and Perioperative Care (asepsis, wound healing, hemostasis, fluid and electrolyte management, nutrition, transfusion, anesthesia basics)

A patient with a prosthetic heart valve requires surgery. Which perioperative transfusion consideration is most relevant?

  1. Anticoagulation and bleeding risk must be balanced against thrombotic risk from the valve Correct answer.
  2. Platelet transfusion is contraindicated in all valve patients
  3. Fresh frozen plasma should be given routinely to all valve patients
  4. Hemoglobin should be kept above 14 g/dL to protect the valve

Explanation

Patients with prosthetic valves have a heightened thrombotic risk, so perioperative anticoagulation and transfusion decisions must balance bleeding against thrombosis. Routine plasma transfusion and very high hemoglobin targets are not standard. Platelet transfusion is not universally contraindicated.

Question 39Surgical Principles and Perioperative Care (asepsis, wound healing, hemostasis, fluid and electrolyte management, nutrition, transfusion, anesthesia basics)

A patient is recovering from surgery and has a serum potassium of 3.1 mmol/L with muscle weakness. Which management approach is most appropriate?

  1. Restrict potassium intake
  2. Give intravenous potassium rapidly as a bolus
  3. Replace potassium gradually with monitoring and address the underlying cause Correct answer.
  4. Give sodium bicarbonate to shift potassium into cells

Explanation

Hypokalemia with symptoms requires careful potassium replacement, preferably oral or controlled intravenous administration with monitoring, plus correction of the cause such as vomiting or diuretics. Rapid bolus potassium can cause fatal arrhythmias. Restriction would worsen the deficit.

Question 40Surgical Principles and Perioperative Care (asepsis, wound healing, hemostasis, fluid and electrolyte management, nutrition, transfusion, anesthesia basics)

Which statement best describes the role of sterile drapes and gowns in preventing surgical site infection?

  1. They create a barrier that reduces transfer of microorganisms from staff and environment to the wound Correct answer.
  2. They allow the surgeon to work without hand antisepsis
  3. They replace the need for instrument sterilization
  4. They sterilize the operative field and eliminate all skin bacteria

Explanation

Sterile drapes and gowns act as barriers that limit microbial transfer from personnel and the environment to the surgical field. They do not sterilize skin or eliminate all bacteria, and they do not substitute for hand antisepsis or instrument sterilization. Aseptic technique is a combination of measures.

Question 41Trauma and Emergency Surgery (including damage control, resuscitation, burns, and critical care)

In an adult with major trauma, which finding best defines the onset of the decompensated phase of shock (the 'lethal triad' trigger zone) rather than the compensated phase?

  1. Base deficit greater than 6 mmol/L with falling urine output despite fluid Correct answer.
  2. Haemoglobin of 10 g/dL on arrival
  3. Heart rate of 105/min with cool peripheries
  4. Anxiety and mild tachypnoea with normal blood pressure

Explanation

Compensated shock maintains perfusion pressure with tachycardia and vasoconstriction, whereas a rising base deficit above about 6 mmol/L with oliguria signals failure of compensation and impending acidosis, coagulopathy and hypothermia. Haemoglobin and isolated tachycardia do not grade shock severity reliably in acute haemorrhage.

Question 42Trauma and Emergency Surgery (including damage control, resuscitation, burns, and critical care)

A hypotensive patient with blunt abdominal trauma responds transiently to a 1 L crystalloid bolus then deteriorates again. According to damage control resuscitation principles, the best next step is:

  1. Start vasopressors to restore mean arterial pressure above 65 mmHg
  2. Activate massive transfusion with balanced blood products and proceed to rapid haemorrhage control Correct answer.
  3. Give two further litres of crystalloid before considering blood
  4. Obtain a CT scan with contrast to localise the bleeding source

Explanation

Transient response identifies ongoing bleeding; the priority is early balanced transfusion (low crystalloid) plus immediate surgical or angiographic control. Large crystalloid volumes worsen coagulopathy, acidosis and dilution.

Question 43Trauma and Emergency Surgery (including damage control, resuscitation, burns, and critical care)

Which transfusion strategy is recommended in the initial resuscitation of a trauma patient with massive haemorrhage?

  1. Red cell concentrate alone until laboratory coagulation results return
  2. Balanced high fresh frozen plasma and platelet ratio with red cells, avoiding large crystalloid volumes Correct answer.
  3. Crystalloid 30 mL/kg followed by red cells
  4. Colloid resuscitation until systolic pressure exceeds 120 mmHg

Explanation

Damage control resuscitation uses a balanced ratio of plasma and platelets to red cells (approximately 1:1:1) with minimal crystalloid, because early coagulopathy of trauma is present before laboratory results are available.

Question 44Trauma and Emergency Surgery (including damage control, resuscitation, burns, and critical care)

A patient with a pelvic fracture and haemodynamic instability remains hypotensive after binder placement and blood products. Which intervention is the most appropriate next step in a damage control pathway?

  1. Removal of the binder to allow clinical reassessment
  2. Rapid infusion of 4 L crystalloid to normalise blood pressure
  3. Immediate definitive open reduction and internal fixation of the pelvis
  4. Angioembolisation or preperitoneal packing after excluding other bleeding sources Correct answer.

Explanation

Unstable pelvic ring injury with ongoing bleeding is managed by mechanical stabilisation plus haemorrhage control, either angioembolisation for arterial bleeding or preperitoneal packing in the exsanguinating patient. Definitive fixation is delayed until physiology is restored.

Question 45Trauma and Emergency Surgery (including damage control, resuscitation, burns, and critical care)

In the primary survey of a trauma patient, which action takes priority when a tension pneumothorax is suspected clinically?

  1. Insertion of a chest drain after confirming absence of breath sounds on auscultation
  2. Immediate decompression by finger thoracostomy or needle decompression without waiting for imaging Correct answer.
  3. Intubation and positive pressure ventilation before decompression
  4. Urgent portable chest radiograph to confirm the diagnosis

Explanation

Tension pneumothorax is a clinical diagnosis and a immediately life-threatening condition; decompression must precede imaging and, ideally, precede positive pressure ventilation, which can worsen the tension.

Question 46Trauma and Emergency Surgery (including damage control, resuscitation, burns, and critical care)

A patient with penetrating neck trauma has active bleeding from zone II and is haemodynamically unstable. The most appropriate management is:

  1. CT angiography before any intervention
  2. Topical pressure alone with delayed endoscopy
  3. Immediate surgical exploration of the neck Correct answer.
  4. Observation with serial haemoglobin measurements

Explanation

Haemodynamic instability with active bleeding after penetrating neck injury mandates immediate operative exploration; imaging is reserved for stable patients. Hard signs of vascular injury override zone-based selective algorithms.

Question 47Trauma and Emergency Surgery (including damage control, resuscitation, burns, and critical care)

Which statement about the use of tranexamic acid in trauma is correct?

  1. It is effective only when administered after 24 hours
  2. It replaces the need for surgical haemostasis in abdominal bleeding
  3. It should be given as early as possible, ideally within three hours of injury, in patients with significant bleeding Correct answer.
  4. It is contraindicated in all patients receiving massive transfusion

Explanation

Tranexamic acid reduces mortality when given early after trauma with significant haemorrhage, with the greatest benefit within three hours; it is an adjunct to, not a substitute for, haemorrhage control.

Question 48Trauma and Emergency Surgery (including damage control, resuscitation, burns, and critical care)

A burn patient weighing 70 kg has 30% total body surface area partial and full thickness burns. Using the Parkland formula, what volume of crystalloid should be given in the first 8 hours from the time of injury?

  1. 4200 mL Correct answer.
  2. 8400 mL
  3. 16800 mL
  4. 2100 mL

Explanation

Parkland formula gives 4 mL/kg/%TBSA over 24 hours, half in the first 8 hours: 4 x 70 x 30 = 8400 mL total, so 4200 mL in the first 8 hours. The clock starts at the time of injury, not at arrival.

Question 49Trauma and Emergency Surgery (including damage control, resuscitation, burns, and critical care)

Which finding in a burn patient should prompt immediate escharotomy of a circumferential limb burn?

  1. Progressive loss of distal pulses with a tense, unyielding eschar Correct answer.
  2. Superficial partial thickness blistering with intact sensation
  3. Mild dependent oedema with palpable distal pulses
  4. Localised erythema without swelling

Explanation

Circumferential full-thickness burns produce an unyielding eschar that compromises perfusion; loss of distal pulses or Doppler signals with a tense limb is the indication for escharotomy. Superficial burns and mild oedema do not require it.

Question 50Trauma and Emergency Surgery (including damage control, resuscitation, burns, and critical care)

A patient arrives with inhalational injury after a house fire. Which combination best predicts the need for early intubation?

  1. Conjunctival injection alone
  2. Hoarseness, carbonaceous sputum and stridor with facial burns Correct answer.
  3. Mild cough with clear sputum and normal oxygen saturation
  4. Isolated singed nasal hairs with a normal voice

Explanation

Stridor, hoarseness, carbonaceous sputum and facial burns indicate upper airway oedema that will progress; intubation should be performed early before oedema makes it impossible. Isolated singed hairs or mild cough can be observed.