ABSA Surgical Assistant Certification
Exam Prep High-Yield MCQs questions
with Verified Rationales
1. During a total abdominal hysterectomy, which ligamentous structure contains
the uterine artery and vein and must be carefully ligated?
A) Round ligament
B) Broad ligament
, C) Cardinal ligament
D) Ovarian ligament
VERIFIED ANSWER: C) Cardinal ligament
EXPLANATION: The cardinal ligament (lateral cervical ligament) houses the
uterine artery and uterine vein at the base of the broad ligament. Safe
ligation of this structure is a critical step in a hysterectomy to prevent major
pelvic hemorrhage. The round ligament contains the artery of Sampson,
which is much smaller, while the ovarian ligament contains ovarian vessel
branches but not the primary uterine trunk.
2. When positioning a patient in the prone position for a lumbar laminectomy,
which anatomical area requires specific protection to prevent visual
impairment?
A) Supraorbital nerve
B) Optic nerve and globe
C) Brachial plexus
D) Olecranon process
VERIFIED ANSWER: B) Optic nerve and globe
EXPLANATION: Direct, unremitting pressure on the globe of the eye while a
patient is prone can cause ischemic optic neuropathy or central retinal artery
occlusion, leading to permanent blindness. Head Positioners must ensure the
eyes are entirely free of pressure. The brachial plexus is protected by proper
arm positioning, and the olecranon is padded to protect the ulnar nerve.
3. Which of the following suture materials is a synthetic monofilament, non-
absorbable choice frequently selected for vascular anastomoses due to its high
tensile strength and low reactivity?
A) Polypropylene
, B) Polydioxanone
C) Silk
D) Polyglactin 910
VERIFIED ANSWER: A) Polypropylene
EXPLANATION: Polypropylene (Prolene) is a synthetic, non-absorbable
monofilament suture that glides smoothly through vessels with minimal
tissue friction and handles high-pressure cardiovascular dynamics perfectly.
Polydioxanone (PDS) is absorbable. Silk is non-absorbable but braided and
highly reactive. Polyglactin 910 (Vicryl) is an absorbable braided suture.
4. A surgical assistant is participating in an open cholecystectomy. To safely
isolate the gallbladder, which two structures form the boundaries of the
Triangle of Calot?
A) Cystic duct, common hepatic duct, and inferior border of the liver
B) Common bile duct, hepatic artery, and portal vein
C) Cystic artery, celiac trunk, and duodenum
D) Left hepatic duct, right hepatic duct, and gallbladder fundus
VERIFIED ANSWER: A) Cystic duct, common hepatic duct, and inferior border
of the liver
EXPLANATION: The Triangle of Calot is anatomically bounded by the cystic
duct inferiorly, the common hepatic duct medially, and the inferior edge of
the liver superiorly. Identifying this triangle clearly is crucial for isolating the
cystic artery and cystic duct before division, reducing the risk of common bile
duct injury.
5. During an open reduction and internal fixation (ORIF) of a fractured femur, a
surgical assistant notes a sudden drop in the patient's oxygen saturation
accompanied by petechiae on the chest. What intraoperative complication
, should be suspected?
A) Deep vein thrombosis
B) Fat embolism syndrome
C) Air embolism
D) Malignant hyperthermia
VERIFIED ANSWER: B) Fat embolism syndrome
EXPLANATION: Fat embolism syndrome is a well-documented risk during the
manipulation, reaming, or fixation of long-bone fractures (like the femur).
Dislodged fat droplets from the bone marrow enter the systemic circulation,
leading to pulmonary dysfunction (hypoxia), neurological changes, and a
classic petechial rash on the upper body.
6. Which statement accurately describes the correct surgical scrub technique
using an alcohol-based chlorhexidine gluconate (CHG) rub?
A) Wash hands and forearms with soap and water, dry completely, then apply
the rub systematically without water.
B) Apply the rub directly to unwashed, soiled hands to maximize chemical
adherence.
C) Scrub vigorously with a stiff nylon brush for 10 minutes before applying the
rub.
D) Rinse the rub off with sterile water immediately before entering the
operating room.
VERIFIED ANSWER: A) Wash hands and forearms with soap and water, dry
completely, then apply the rub systematically without water.
EXPLANATION: For alcohol-based surgical rubs to be effective, hands must
first be clean of visible soil and completely dry, as water dilutes the alcohol
compound. The product must be rubbed thoroughly over hands and forearms
Exam Prep High-Yield MCQs questions
with Verified Rationales
1. During a total abdominal hysterectomy, which ligamentous structure contains
the uterine artery and vein and must be carefully ligated?
A) Round ligament
B) Broad ligament
, C) Cardinal ligament
D) Ovarian ligament
VERIFIED ANSWER: C) Cardinal ligament
EXPLANATION: The cardinal ligament (lateral cervical ligament) houses the
uterine artery and uterine vein at the base of the broad ligament. Safe
ligation of this structure is a critical step in a hysterectomy to prevent major
pelvic hemorrhage. The round ligament contains the artery of Sampson,
which is much smaller, while the ovarian ligament contains ovarian vessel
branches but not the primary uterine trunk.
2. When positioning a patient in the prone position for a lumbar laminectomy,
which anatomical area requires specific protection to prevent visual
impairment?
A) Supraorbital nerve
B) Optic nerve and globe
C) Brachial plexus
D) Olecranon process
VERIFIED ANSWER: B) Optic nerve and globe
EXPLANATION: Direct, unremitting pressure on the globe of the eye while a
patient is prone can cause ischemic optic neuropathy or central retinal artery
occlusion, leading to permanent blindness. Head Positioners must ensure the
eyes are entirely free of pressure. The brachial plexus is protected by proper
arm positioning, and the olecranon is padded to protect the ulnar nerve.
3. Which of the following suture materials is a synthetic monofilament, non-
absorbable choice frequently selected for vascular anastomoses due to its high
tensile strength and low reactivity?
A) Polypropylene
, B) Polydioxanone
C) Silk
D) Polyglactin 910
VERIFIED ANSWER: A) Polypropylene
EXPLANATION: Polypropylene (Prolene) is a synthetic, non-absorbable
monofilament suture that glides smoothly through vessels with minimal
tissue friction and handles high-pressure cardiovascular dynamics perfectly.
Polydioxanone (PDS) is absorbable. Silk is non-absorbable but braided and
highly reactive. Polyglactin 910 (Vicryl) is an absorbable braided suture.
4. A surgical assistant is participating in an open cholecystectomy. To safely
isolate the gallbladder, which two structures form the boundaries of the
Triangle of Calot?
A) Cystic duct, common hepatic duct, and inferior border of the liver
B) Common bile duct, hepatic artery, and portal vein
C) Cystic artery, celiac trunk, and duodenum
D) Left hepatic duct, right hepatic duct, and gallbladder fundus
VERIFIED ANSWER: A) Cystic duct, common hepatic duct, and inferior border
of the liver
EXPLANATION: The Triangle of Calot is anatomically bounded by the cystic
duct inferiorly, the common hepatic duct medially, and the inferior edge of
the liver superiorly. Identifying this triangle clearly is crucial for isolating the
cystic artery and cystic duct before division, reducing the risk of common bile
duct injury.
5. During an open reduction and internal fixation (ORIF) of a fractured femur, a
surgical assistant notes a sudden drop in the patient's oxygen saturation
accompanied by petechiae on the chest. What intraoperative complication
, should be suspected?
A) Deep vein thrombosis
B) Fat embolism syndrome
C) Air embolism
D) Malignant hyperthermia
VERIFIED ANSWER: B) Fat embolism syndrome
EXPLANATION: Fat embolism syndrome is a well-documented risk during the
manipulation, reaming, or fixation of long-bone fractures (like the femur).
Dislodged fat droplets from the bone marrow enter the systemic circulation,
leading to pulmonary dysfunction (hypoxia), neurological changes, and a
classic petechial rash on the upper body.
6. Which statement accurately describes the correct surgical scrub technique
using an alcohol-based chlorhexidine gluconate (CHG) rub?
A) Wash hands and forearms with soap and water, dry completely, then apply
the rub systematically without water.
B) Apply the rub directly to unwashed, soiled hands to maximize chemical
adherence.
C) Scrub vigorously with a stiff nylon brush for 10 minutes before applying the
rub.
D) Rinse the rub off with sterile water immediately before entering the
operating room.
VERIFIED ANSWER: A) Wash hands and forearms with soap and water, dry
completely, then apply the rub systematically without water.
EXPLANATION: For alcohol-based surgical rubs to be effective, hands must
first be clean of visible soil and completely dry, as water dilutes the alcohol
compound. The product must be rubbed thoroughly over hands and forearms
