Free ABS Qualifying Sample Questions

With the vast amount of knowledge that is potentially testable on the ABS Qualifying Exam (QE), it can be hard to see the forest through the trees. It’s important to take your time when studying. Don’t rush yourself. And get all the help you can by exploring the resources available to you. Below are 3 free sample questions from TrueLearn’s ABS Qualifying SmartBank to show you want you would get with a subscription.

First Free ABS QE Sample Question

A 35-year-old woman presents with an incidental finding on a trauma CT scan of multiple cystic structures within the pancreas (see below). She is referred for the evaluation of this finding. She is a nonsmoker and a social drinker. She denies any recent weight loss or prior bouts of pancreatitis. Each cyst does not appear to have direct communication with the main pancreatic duct. Percutaneous aspiration of the cystic structure is performed. Analysis of the fluid shows a low level of amylase and a CEA level of 0.35 ng/mL.

What is the most likely diagnosis of this cystic mass?

• A) serous cystadenoma
• B) mucinous cystic neoplasm
• C) pancreatic pseudocyst
• D) pancreatic metastasis
• E) pancreatic adenocarcinoma

The Answer and Explanation

The correct answer is: A

The lack of communication with the main pancreatic duct is classic for both mucinous cystic neoplasms (MCN) and serous cystadenomas (SCN). The central calcification surrounded by multiple cysts (indicated by the arrow in the referenced CT scan) is pathognomonic for SCN and the fluid in the cyst of a SCN is low in CEA, while that in the MCN is high in CEA.

Analysis of Pancreatic Cystic Fluid

Serous cystadenoma of the pancreatic head. This patient demonstrates a typical appearance of a serous cystadenoma (arrow) with central calcifications and innumerable cysts creating a “mass.”

• Answer B: The level of CEA is high in MCNs.
• Answer C: There is no history of alcohol abuse or multiple bouts of pancreatitis that would explain the presence of a pseudocyst. Additionally, the low amylase makes this diagnosis unlikely.
• Answer D: There is no reason to suspect any occult malignancy. Therefore, metastases to the pancreas are unlikely. Also, a metastasis would be solid, not cystic in nature.
• Answer E: Pancreatic adenocarcinoma would not appear cystic on imaging.

Bottom Line: Central calcification surrounded by multiple cysts is pathognomonic for serous cystadenoma. The fluid in the cyst of a serous cystadenoma is low in CEA, while that in a mucinous cystic neoplasm is high in CEA.

TrueLearn Insight: The ability to differentiate pancreatic cystic structures via fluid analysis is important for surgical board exams.

For more information, see:

• Dudeja V, Christein JD, Jensen EH, Vickers SM. Chapter 55: Exocrine pancreas. In: Townsend CM, Beauchamp RD, Evers BM, Mattox K, eds. Sabiston Textbook of Surgery: The Biological Basis of Modern Surgical Practice. 20th ed. Philadelphia, PA: Elsevier; 2017:1520-1525.
• Brugge WR. The use of EUS to diagnose cystic neoplasms of the pancreas. Gastrointest Endosc. 2009;69(2 suppl):S203-S209.
• Image source: Wikimedia Commons

Second ABS Qualifying Question

A Swan-Ganz catheter is placed into a dialysis-dependent patient with cold, clammy skin. The readings show a pulse rate of 94/min, with a cardiac index of 1.5 L/min/m², a pulmonary capillary wedge pressure of 20 mm Hg, and systemic vascular resistance of 3000 dynes/sec/cm^-5. Which of the following is the best management option for the patient?

• A) norepinephrine and IV antibiotics
• B) milrinone
• C) dobutamine
• D) rapid infusion of 2 liters of crystalloid
• E) IV hydrocortisone

The Answer and Explanation

The correct answer is: C

The readings from the Swan-Ganz catheter suggest the patient is in cardiogenic shock. Listed below are the normal ranges for the cardiac index, pulmonary capillary wedge pressure, and systemic vascular resistance. The best medical management for cardiogenic shock is the addition of a contractility agent, such as dobutamine. 

The patient is dialysis-dependent. Milrinone is relatively contraindicated in patients with kidney failure.

• Answer A: Norepinephrine is the initial vasopressor of choice in septic and could be considered in cardiogenic shock. However, IV antibiotics would be an appropriate treatment option for a patient in septic shock. Septic shock would show a low systemic vascular resistance.
• Answer B: The patient is dialysis-dependent, and milrinone is relatively contraindicated in patients with kidney failure as it is renally cleared. In dialysis-dependent patients, its blood levels can rise precipitously and cause severe hypotension.
• Answer D: Rapid infusion of crystalloid would be an appropriate treatment for hypovolemic shock. Hypovolemic shock would show a low pulmonary capillary wedge pressure, whereas this patient has an elevated wedge pressure, which makes hypovolemia unlikely.
• Answer E: IV hydrocortisone is appropriate to treat a patient with adrenal insufficiency. A patient with acute adrenal insufficiency would typically have an increased cardiac index and decreased systemic vascular resistance.

Bottom Line: Cardiogenic shock is treated with a contractility agent and by fixing the primary coronary problem, like percutaneous coronary intervention for acute myocardial infarction.

For more information, see:

• Stephen A, Adams C, Cioffi W. Chapter 21: Surgical critical care. In: Townsend C, Beauchamp RD, Evers BM, et al, eds. Sabiston Textbook of Surgery: The Biological Basis of Modern Surgical Practice. 20th ed. Philadelphia: Elsevier; 2017:547-576.
• Use of vasopressors and inotropes: UpToDate

Third Free Sample Question

A 36-year-old male chef is brought to the trauma bay after accidentally stabbing himself at work with a paring knife. He has a 2-cm stab wound to the right of his umbilicus. He is hemodynamically stable. His examination is significant for localized tenderness around the wound without signs of peritonitis. Local wound exploration demonstrates possible violation of the anterior abdominal fascia, but it is not clear if the patient’s peritoneal cavity has been violated due to his body habitus. Which of the following is the best course of action?

• A) discharge from trauma bay
• B) admission for serial abdominal exams
• C) diagnostic peritoneal lavage
• D) CT scan of abdomen and pelvis
• E) exploratory laparotomy

The Answer and Explanation

The correct answer is: B

The question presents a scenario of an anterior abdominal stab wound. The anterior abdomen is the area from the costal margins to the inguinal ligaments between the anterior axillary lines (see image).

Abdominal anatomy with the anterior abdomen bounded by asterisks. 

Data have shown that anterior stab wounds only violate the peritoneal cavity a minority of the time (approximately 25-33%). Even in patients with peritoneal penetration, only 50% will present with indications for a laparotomy. In the remaining 50%, only half will become symptomatic and require a laparotomy. Thus, a push has been made in the past few decades for selective nonoperative management of anterior abdominal stab wounds to avoid the morbidity of non-therapeutic laparotomy. 

A local wound exploration under semi-sterile conditions is the first step. If it can be confirmed that violation of the anterior abdominal fascia has not occurred, the wound is irrigated, a tetanus immunization is administered, and the patient is discharged. In most centers, a hemodynamically stable patient without peritonitis with penetration of the anterior aponeurosis or peritoneum will undergo serial physical examinations for 24 hours. Almost all patients with continued intraperitoneal bleeding or peritonitis from hollow viscus injury will become symptomatic within 6 to 16 hours, which should then prompt laparotomy.

The incidence of obesity is increasing in the population and therefore is encountered more often in the trauma population. At times, abdominal examinations may be difficult in obese patients. However, the physician is still able to detect the presence or absence of peritoneal signs either by palpation or percussion. On the other hand, local wound exploration is usually done in the trauma bay of the ER with less than ideal lighting and usually uses a small incision in which the surgeon is trying to navigate through several centimeters of adipose tissue in an obese patient to see the fascia and therefore may not see any violation clearly.

A study by Bloom et al. in 2015 concluded that admission and serial abdominal examinations (looking for signs of peritonitis or worsening of findings) in obese trauma patients who were the victims of penetrating abdominal traumas is a preferred approach to immediate exploratory laparotomy, which is preferred in thinner trauma patients who had suffered penetrating abdominal trauma.

• Answer A: Discharge from the trauma bay without observation would be inappropriate in this patient. If the patient’s anterior abdominal fascia were confirmed to be intact, discharge from the trauma bay would be acceptable.
• Answer C: Diagnostic peritoneal lavage (DPL) involves lavaging the peritoneal cavity with warm saline through a small incision made around the umbilicus to determine if there are any intra-abdominal injuries. Enthusiasm for DPL has waned over time due to inexperience in many centers and the possibility of false-positive results from intraperitoneal blood related to injury to the anterior abdominal wall. The focused assessment with sonography for trauma (FAST) exam has largely replaced the use of DPL in most centers.
• Answer D: CT scan is utilized in cases where the patient is not alert and able to undergo a reliable abdominal examination. In many cases, it can show a fascial defect but not in all cases (depending on body habitus and CT scan resolution). This patient is able to undergo serial abdominal examinations to show any degree of peritonitis.
• Answer E: In the past few decades, selective nonoperative management of anterior stab wounds in hemodynamically stable patients without signs of peritonitis has become standard of care to avoid the morbidity of non-therapeutic laparotomy. Exploratory laparotomy is reserved for anterior stab wound patients who are hemodynamically unstable or have signs of peritonitis.

Bottom Line: Selective nonoperative management of anterior stab wounds in hemodynamically stable patients without signs of peritonitis has become standard of care to avoid the morbidity of non-therapeutic laparotomy. If the anterior abdominal fascia has been violated on local wound exploration, admission for serial abdominal examinations is the preferred course of action.

For more information, see:

• Feliciano DV. Penetrating abdominal trauma. In: Cameron JL, Cameron AM, eds. Current Surgical Therapy. 13th ed. Philadelphia, PA: Elsevier; 2020:1162-1166.
• Martin MJ et al. Evaluation and management of abdominal stab wounds: A Western Trauma Association decisions algorithm. J Trauma Acute Care Surg. 2018; 85(5):1007-1015.
• Bloom MB, Ley EJ, Liou DZ, et al. Impact of body mass index on injury in abdominal stab wounds: implications for management. J Surg Res. 2015;197(1):162-166.
• Image source: Wikimedia Commons

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To learn more about the exam itself, check out our article on everything you need to know for the ABS Qualifying exam.