CST EXAM ACTUAL EXAM VERSIONS (VERSION A AND B) COMPLETE QUESTIONS
WITH DETAILED VERIFIED ANSWERS (100% CORRECT ANSWERS) /ALREADY GRADED
A+/NEWEST UPDATE!!!
Question 1
Which of the following surgical procedures is performed specifically to decrease gastric acid
secretions in patients with peptic ulcer disease?
A) Pyloroplasty
B) Vagotomy
C) Billroth I
D) Gastrostomy
E) Nissen fundoplication
Correct Answer: B) Vagotomy
Rationale: A vagotomy involves the surgical interruption of the vagus nerve (cranial nerve
X). Because parasympathetic fibers of the vagus nerve stimulate gastric parietal cells to
secrete hydrochloric acid, severing these nerve pathways reduces gastric acid output and
decreases gastrin production, treating chronic or recurrent peptic ulcers. Pyloroplasty is
often performed alongside a truncal vagotomy to counteract delayed gastric emptying
caused by denervation of the pyloric sphincter, but it does not directly decrease acid
secretion.
Question 2
A patient who underwent an open appendectomy five days ago presents to the emergency
department with severe colicky abdominal pain, absolute constipation, abdominal distension, and
feculent vomiting. Which of the following conditions is most likely occurring?
A) Acute cholecystitis
B) Obstructed bowel
C) Diverticulitis
D) Strangulated incisional hernia
E) Appendiceal stump leakage
Correct Answer: B) Obstructed bowel
Rationale: Postoperative small bowel obstruction (SBO) frequently develops as a result of
intra-abdominal fibrous adhesions forming after surgical interventions, such as an
appendectomy. Classical hallmarks of mechanical bowel obstruction include crampy
abdominal pain, obstipation (inability to pass flatus or stool), progressive abdominal
distension, and nausea with vomiting that may become feculent as intestinal contents
stagnate.
Question 3
Which anatomical structure shares a common arterial blood supply with the head of the pancreas
and must therefore be resected along with it during a classic pancreaticoduodenectomy (Whipple
procedure)?
A) Spleen
, 2
B) Duodenum
C) Kidney
D) Urinary bladder
E) Transverse colon
Correct Answer: B) Duodenum
Rationale: The head of the pancreas and the C-loop of the duodenum share an extensive
microvascular and macrovascular blood supply via the superior and inferior
pancreaticoduodenal arteries. Because interrupting these arterial arcades causes
irreversible devascularization and ischemia to the duodenal tissue, the duodenum must be
excised along with the pancreatic head, distal common bile duct, and gallbladder during a
Whipple procedure.
Question 4
During a cheiloplasty or cleft palate repair, which piece of powered equipment should the
surgical technologist ensure is immediately available and tested on the sterile field?
A) Sagittal saw
B) Surgical drill
C) Ultrasonic aspirator
D) Dermatome
E) Operating microscope
Correct Answer: B) Surgical drill
Rationale: During cleft palate repair, osteotomies or manipulation of bone along the hard
palate may be necessary. A surgical drill fitted with fine burrs is routinely required to
decorticate bone, create burr holes, or facilitate the mobilization and re-anchoring of
palatal osseous flaps to restore normal palatopharyngeal architecture.
Question 5
Which muscle flexes the elbow, acts as a powerful supinator of the forearm, and covers the
anterior portion of the upper arm?
A) Flexor carpi radialis
B) Biceps brachii
C) Brachioradialis
D) Teres major
E) Coracobrachialis
Correct Answer: B) Biceps brachii
Rationale: The biceps brachii is a two-headed muscle situated on the anterior compartment
of the arm. It originates from the scapula (supraglenoid tubercle and coracoid process) and
inserts onto the radial tuberosity and bicipital aponeurosis. It acts across two joints: it is a
primary supinator of the radioulnar joint (especially when the forearm is flexed) and a
major flexor of the elbow joint.
, 3
Question 6
A surgeon explains to a patient that she has advanced, terminal colon cancer requiring a
palliative diverting colostomy to prevent imminent bowel obstruction. The patient responds,
"This cannot be happening to me; the lab results must be mixed up." Which stage of grief
according to the Kübler-Ross model is this patient displaying?
A) Depression
B) Bargaining
C) Denial
D) Anger
E) Acceptance
Correct Answer: C) Denial
Rationale: In Elisabeth Kübler-Ross’s five stages of grief (Denial, Anger, Bargaining,
Depression, Acceptance), denial functions as an initial defense mechanism that buffers the
immediate shock of unexpected traumatic news. Verbalizing that a fatal medical diagnosis
is false or a laboratory error demonstrates this first stage.
Question 7
What is the primary therapeutic purpose of inserting a temporary indwelling double-J ureteral
stent catheter?
A) Monitor urine output continuously in the intensive care unit
B) Bypass calculi obstruction and maintain urinary drainage
C) Chemically dissolve radiolucent uric acid stones
D) Excise impacted renal stones through mechanical fragmentation
E) Prevent postoperative urinary tract infections
Correct Answer: B) Bypass calculi obstruction and maintain urinary drainage
Rationale: A double-J ureteral stent is placed retrograde via cystoscopy into the ureter to
maintain luminal patency, bypass an obstructing ureteral stone (calculus), alleviate
hydronephrosis, and allow postoperative edema to subside while ensuring unimpeded urine
flow from the renal pelvis to the bladder.
Question 8
During an open or arthroscopic Bankart procedure for recurrent anterior shoulder instability,
which instrument is typically utilized to prepare a bleeding bone trough on the anterior glenoid
rim for labral reattachment?
A) Periosteal elevator
B) Bone cutting forceps
C) Shaver with abrader tip
D) Reciprocating bone saw
E) Kerrison rongeur
Correct Answer: C) Shaver with abrader tip
, 4
Rationale: The Bankart lesion involves detachment of the anterior-inferior glenoid labrum
from the glenoid rim. To achieve biological healing, an arthroscopic burr or mechanical
motorized shaver fitted with an abrader tip is used to decorticate and abrade the sclerotic
edge of the anterior glenoid rim down to bleeding cancellous bone, creating an ideal bed for
suture anchor fixation.
Question 9
Which specialized epithelial cells within the gastric glands of the stomach are responsible for the
secretion of hydrochloric acid (HCl) and intrinsic factor?
A) Chief cells
B) G cells
C) Parietal cells
D) Mucous neck cells
E) Enterochromaffin-like cells
Correct Answer: C) Parietal cells
Rationale: Parietal (oxyntic) cells, located predominantly within the fundus and body of the
stomach, synthesize and secrete hydrochloric acid (which activates pepsinogen into pepsin
and maintains a sterilizing, acidic pH) as well as intrinsic factor (a glycoprotein mandatory
for the absorption of vitamin B12 in the terminal ileum). Chief cells produce pepsinogen,
and G cells secrete gastrin.
Question 10
Which neurodiagnostic test records the spontaneous electrical activity of cerebral neurons and is
routinely indicated for evaluating seizure activity in a patient with a traumatic brain injury?
A) Electroencephalogram (EEG)
B) Electromyogram (EMG)
C) Transesophageal echocardiogram (TEE)
D) Arterial oxygen saturation (
𝑆𝑎𝑂2
)
E) Lumbar puncture
Correct Answer: A) Electroencephalogram (EEG)
Rationale: An electroencephalogram (EEG) records cortical electrical signals via
noninvasive surface electrodes placed along the scalp. It is used preoperatively and
intraoperatively to detect seizure foci, assess baseline cerebral activity, determine the depth
of general anesthesia, and identify cerebral ischemia in patients with cranial trauma or
intracranial pathology.
Question 11
Which of the following is considered a type of fenestrated drape used in surgical procedures?
WITH DETAILED VERIFIED ANSWERS (100% CORRECT ANSWERS) /ALREADY GRADED
A+/NEWEST UPDATE!!!
Question 1
Which of the following surgical procedures is performed specifically to decrease gastric acid
secretions in patients with peptic ulcer disease?
A) Pyloroplasty
B) Vagotomy
C) Billroth I
D) Gastrostomy
E) Nissen fundoplication
Correct Answer: B) Vagotomy
Rationale: A vagotomy involves the surgical interruption of the vagus nerve (cranial nerve
X). Because parasympathetic fibers of the vagus nerve stimulate gastric parietal cells to
secrete hydrochloric acid, severing these nerve pathways reduces gastric acid output and
decreases gastrin production, treating chronic or recurrent peptic ulcers. Pyloroplasty is
often performed alongside a truncal vagotomy to counteract delayed gastric emptying
caused by denervation of the pyloric sphincter, but it does not directly decrease acid
secretion.
Question 2
A patient who underwent an open appendectomy five days ago presents to the emergency
department with severe colicky abdominal pain, absolute constipation, abdominal distension, and
feculent vomiting. Which of the following conditions is most likely occurring?
A) Acute cholecystitis
B) Obstructed bowel
C) Diverticulitis
D) Strangulated incisional hernia
E) Appendiceal stump leakage
Correct Answer: B) Obstructed bowel
Rationale: Postoperative small bowel obstruction (SBO) frequently develops as a result of
intra-abdominal fibrous adhesions forming after surgical interventions, such as an
appendectomy. Classical hallmarks of mechanical bowel obstruction include crampy
abdominal pain, obstipation (inability to pass flatus or stool), progressive abdominal
distension, and nausea with vomiting that may become feculent as intestinal contents
stagnate.
Question 3
Which anatomical structure shares a common arterial blood supply with the head of the pancreas
and must therefore be resected along with it during a classic pancreaticoduodenectomy (Whipple
procedure)?
A) Spleen
, 2
B) Duodenum
C) Kidney
D) Urinary bladder
E) Transverse colon
Correct Answer: B) Duodenum
Rationale: The head of the pancreas and the C-loop of the duodenum share an extensive
microvascular and macrovascular blood supply via the superior and inferior
pancreaticoduodenal arteries. Because interrupting these arterial arcades causes
irreversible devascularization and ischemia to the duodenal tissue, the duodenum must be
excised along with the pancreatic head, distal common bile duct, and gallbladder during a
Whipple procedure.
Question 4
During a cheiloplasty or cleft palate repair, which piece of powered equipment should the
surgical technologist ensure is immediately available and tested on the sterile field?
A) Sagittal saw
B) Surgical drill
C) Ultrasonic aspirator
D) Dermatome
E) Operating microscope
Correct Answer: B) Surgical drill
Rationale: During cleft palate repair, osteotomies or manipulation of bone along the hard
palate may be necessary. A surgical drill fitted with fine burrs is routinely required to
decorticate bone, create burr holes, or facilitate the mobilization and re-anchoring of
palatal osseous flaps to restore normal palatopharyngeal architecture.
Question 5
Which muscle flexes the elbow, acts as a powerful supinator of the forearm, and covers the
anterior portion of the upper arm?
A) Flexor carpi radialis
B) Biceps brachii
C) Brachioradialis
D) Teres major
E) Coracobrachialis
Correct Answer: B) Biceps brachii
Rationale: The biceps brachii is a two-headed muscle situated on the anterior compartment
of the arm. It originates from the scapula (supraglenoid tubercle and coracoid process) and
inserts onto the radial tuberosity and bicipital aponeurosis. It acts across two joints: it is a
primary supinator of the radioulnar joint (especially when the forearm is flexed) and a
major flexor of the elbow joint.
, 3
Question 6
A surgeon explains to a patient that she has advanced, terminal colon cancer requiring a
palliative diverting colostomy to prevent imminent bowel obstruction. The patient responds,
"This cannot be happening to me; the lab results must be mixed up." Which stage of grief
according to the Kübler-Ross model is this patient displaying?
A) Depression
B) Bargaining
C) Denial
D) Anger
E) Acceptance
Correct Answer: C) Denial
Rationale: In Elisabeth Kübler-Ross’s five stages of grief (Denial, Anger, Bargaining,
Depression, Acceptance), denial functions as an initial defense mechanism that buffers the
immediate shock of unexpected traumatic news. Verbalizing that a fatal medical diagnosis
is false or a laboratory error demonstrates this first stage.
Question 7
What is the primary therapeutic purpose of inserting a temporary indwelling double-J ureteral
stent catheter?
A) Monitor urine output continuously in the intensive care unit
B) Bypass calculi obstruction and maintain urinary drainage
C) Chemically dissolve radiolucent uric acid stones
D) Excise impacted renal stones through mechanical fragmentation
E) Prevent postoperative urinary tract infections
Correct Answer: B) Bypass calculi obstruction and maintain urinary drainage
Rationale: A double-J ureteral stent is placed retrograde via cystoscopy into the ureter to
maintain luminal patency, bypass an obstructing ureteral stone (calculus), alleviate
hydronephrosis, and allow postoperative edema to subside while ensuring unimpeded urine
flow from the renal pelvis to the bladder.
Question 8
During an open or arthroscopic Bankart procedure for recurrent anterior shoulder instability,
which instrument is typically utilized to prepare a bleeding bone trough on the anterior glenoid
rim for labral reattachment?
A) Periosteal elevator
B) Bone cutting forceps
C) Shaver with abrader tip
D) Reciprocating bone saw
E) Kerrison rongeur
Correct Answer: C) Shaver with abrader tip
, 4
Rationale: The Bankart lesion involves detachment of the anterior-inferior glenoid labrum
from the glenoid rim. To achieve biological healing, an arthroscopic burr or mechanical
motorized shaver fitted with an abrader tip is used to decorticate and abrade the sclerotic
edge of the anterior glenoid rim down to bleeding cancellous bone, creating an ideal bed for
suture anchor fixation.
Question 9
Which specialized epithelial cells within the gastric glands of the stomach are responsible for the
secretion of hydrochloric acid (HCl) and intrinsic factor?
A) Chief cells
B) G cells
C) Parietal cells
D) Mucous neck cells
E) Enterochromaffin-like cells
Correct Answer: C) Parietal cells
Rationale: Parietal (oxyntic) cells, located predominantly within the fundus and body of the
stomach, synthesize and secrete hydrochloric acid (which activates pepsinogen into pepsin
and maintains a sterilizing, acidic pH) as well as intrinsic factor (a glycoprotein mandatory
for the absorption of vitamin B12 in the terminal ileum). Chief cells produce pepsinogen,
and G cells secrete gastrin.
Question 10
Which neurodiagnostic test records the spontaneous electrical activity of cerebral neurons and is
routinely indicated for evaluating seizure activity in a patient with a traumatic brain injury?
A) Electroencephalogram (EEG)
B) Electromyogram (EMG)
C) Transesophageal echocardiogram (TEE)
D) Arterial oxygen saturation (
𝑆𝑎𝑂2
)
E) Lumbar puncture
Correct Answer: A) Electroencephalogram (EEG)
Rationale: An electroencephalogram (EEG) records cortical electrical signals via
noninvasive surface electrodes placed along the scalp. It is used preoperatively and
intraoperatively to detect seizure foci, assess baseline cerebral activity, determine the depth
of general anesthesia, and identify cerebral ischemia in patients with cranial trauma or
intracranial pathology.
Question 11
Which of the following is considered a type of fenestrated drape used in surgical procedures?
