Surgical Instruments
Q1. A surgeon is performing a laparotomy and requests an instrument to provide hemostasis
by crushing the tissue and vessel ends while minimizing slippage. The jaws of this instrument
have transverse grooves and are straight or curved. Which instrument is being requested?
A) Kelly forceps
B) Rochester-Carmalt forceps
C) Kocher forceps
D) Mosquito forceps
E) Allis forceps
Detailed Answer:
Correct Answer: C
Kocher forceps (also called Ochsner forceps) have transverse serrations and 1x2 teeth at the tip.
They are designed to crush tissue and occlude blood vessels firmly, providing excellent
hemostasis with minimal slippage. They are heavier than Kelly forceps. Kelly forceps (A) are
similar but have longitudinal serrations and are less traumatic (no teeth). Rochester-Carmalt (B)
have longitudinal serrations and are used for clamping pedicles. Mosquito (D) are smaller,
delicate hemostats. Allis (E) have teeth and are used for grasping tissue, not hemostasis.
Q2. A surgeon is about to close the abdominal fascia and asks for a needle holder. He specifies
that he wants one with a ratchet, a short jaw, and a tungsten carbide insert for a secure grip
on the needle. Which instrument is most appropriate?
A) Mayo-Hegar needle holder
B) Webster needle holder
C) Castroviejo needle holder
D) Ryder needle holder
E) Crile-Wood needle holder
Detailed Answer:
Correct Answer: A
The Mayo-Hegar needle holder is the most common general-purpose needle holder. It has a
ratchet, relatively short jaws, and often has tungsten carbide inserts (TC) to prevent needle
slippage and wear. Webster (B) is a finer, longer needle holder for vascular surgery. Castroviejo
(C) is a spring-loaded, delicate holder for microsurgery. Ryder (D) is for cardiovascular surgery
with a longer shaft. Crile-Wood (E) is a hybrid but less common.
,Q3. A surgical technologist is setting up a tray for a thyroidectomy. The surgeon requests an
instrument to retract the strap muscles and the thyroid gland gently without penetrating the
capsule. Which retractor is most suitable?
A) Army-Navy retractor
B) Richardson retractor
C) Senn retractor
D) Farabeuf retractor
E) Joll's retractor
Detailed Answer:
Correct Answer: E
Joll's retractor is a specialized, curved, self-retaining retractor used specifically in thyroid surgery
to retract the sternothyroid and sternohyoid muscles laterally and expose the thyroid gland. It
has blunt, curved blades. Army-Navy (A) is a handheld, double-ended retractor used for
superficial wounds. Richardson (B) is a large handheld retractor for deep abdominal wounds.
Senn (C) is a small, double-ended retractor with both sharp and blunt ends. Farabeuf (D) is a
handheld retractor with a curved blade for retracting deep wound edges.
Q4. During a bowel resection, the surgeon needs to occlude the bowel lumen to prevent
spillage of contents while also allowing for clamping of the mesentery. Which instrument has
a longitudinal serration pattern and is designed to minimize tissue trauma while providing a
secure grip on the bowel?
A) Kocher clamp
B) Allis clamp
C) Babcock clamp
D) Doyen clamp
E) Satinsky clamp
Detailed Answer:
Correct Answer: C
Babcock clamp is a non-crushing, atraumatic clamp with broad, fenestrated jaws. It is
specifically designed to grasp delicate structures like the bowel, fallopian tubes, or appendix
without causing trauma. Kocher (A) crushes tissue. Allis (B) has teeth and is traumatic. Doyen
(D) is an intestinal clamp with a soft, rubber-covered jaw to occlude the bowel lumen without
crushing. Satinsky (E) is a side-biting vascular clamp.
,Q5. A surgeon is performing a vascular anastomosis and needs a fine, angled, non-crushing
clamp to partially occlude the side of the aorta. Which instrument is most appropriate?
A) Potts-Smith clamp
B) Cooley clamp
C) Satinsky clamp
D) DeBakey clamp
E) Bulldog clamp
Detailed Answer:
Correct Answer: C
The Satinsky clamp (also known as a partial occlusion clamp) is a curved, angled clamp with a
long, atraumatic jaw. It is designed for side-biting occlusion of a vessel, such as the aorta during
a bypass graft anastomosis, without completely stopping flow. Potts-Smith (A) is a straight or
angled vascular clamp for end-to-end anastomosis. Cooley (B) is a smaller, delicate vascular
clamp. DeBakey (D) is an atraumatic vascular clamp with a longer jaw for occluding large
vessels. Bulldog (E) is a small, spring-loaded clamp for temporary occlusion of small vessels.
Q6. The scrub nurse hands the surgeon an instrument with a curved, blunt-tipped jaw and a
ratchet. The surgeon uses it to dissect tissue bluntly and to clamp blood vessels. This
instrument is most likely a:
A) Mixter (right-angle) forceps
B) Kelly forceps
C) Metzenbaum scissors
D) Pennington clamp
E) Heaney clamp
Detailed Answer:
Correct Answer: A
The Mixter forceps (right-angle forceps) is a curved, blunt-tipped hemostat with a ratchet,
commonly used for blunt dissection around structures (e.g., cystic duct, vascular pedicles) and
for passing ligatures around vessels. Kelly (B) is a straight or curved hemostat with a blunt tip
but is not typically used for dissection around a vessel. Metzenbaum (C) are scissors. Pennington
(D) is an atramuatic clamp for crushing. Heaney (E) is a heavy clamp for hysterectomy.
Q7. A surgeon is closing the skin and requests an instrument to hold the skin edges in a
gentle, non-crushing manner to evert the edges for suturing. The instrument has a wide, flat
jaw with fine serrations. This is a:
, A) Adson-Brown forceps
B) DeBakey forceps
C) Russian forceps
D) Tissue forceps (1x2 teeth)
E) Splinter forceps
Detailed Answer:
Correct Answer: A
Adson-Brown forceps (or Adson forceps with teeth) are fine, thumb forceps with a wide, flat jaw
that has fine serrations (or 1x2 teeth on the Brown version). They are used to grasp skin or
delicate tissue with minimal trauma. DeBakey (B) is similar but has a longitudinal groove and is
used in vascular surgery. Russian (C) has a round, cupped jaw. Tissue forceps (D) have 1x2 teeth
and are more traumatic. Splinter forceps (E) are pointed.
Q8. A patient undergoes a laparoscopic cholecystectomy. The surgeon places a trocar through
the abdominal wall. The most important safety feature of a trocar to prevent injury to
underlying structures is:
A) A pyramidal tip
B) A spring-loaded safety shield that covers the tip upon entry
C) A bladeless, dilating tip
D) A transparent cannula
E) A locking mechanism for the cannula
Detailed Answer:
Correct Answer: B
The safety shield (or "safety trocar") is a spring-loaded mechanism that covers the sharp tip of
the obturator as soon as it enters the peritoneal cavity, preventing inadvertent injury to bowel
or vessels. Pyramidal tips (A) are sharp and can cause injury. Bladeless dilating tips (C) are also
used but the safety shield is the primary safety feature. Transparency (D) and locking (E) are
secondary.
Q9. A surgeon is performing a mastectomy and needs an instrument to grasp and retract the
skin flaps without crushing or causing necrosis. The instrument has a wide, curved,
fenestrated blade and is often used for grasping the breast parenchyma. This is a:
A) Allis clamp
B) Babcock clamp
C) Lahey forceps
Q1. A surgeon is performing a laparotomy and requests an instrument to provide hemostasis
by crushing the tissue and vessel ends while minimizing slippage. The jaws of this instrument
have transverse grooves and are straight or curved. Which instrument is being requested?
A) Kelly forceps
B) Rochester-Carmalt forceps
C) Kocher forceps
D) Mosquito forceps
E) Allis forceps
Detailed Answer:
Correct Answer: C
Kocher forceps (also called Ochsner forceps) have transverse serrations and 1x2 teeth at the tip.
They are designed to crush tissue and occlude blood vessels firmly, providing excellent
hemostasis with minimal slippage. They are heavier than Kelly forceps. Kelly forceps (A) are
similar but have longitudinal serrations and are less traumatic (no teeth). Rochester-Carmalt (B)
have longitudinal serrations and are used for clamping pedicles. Mosquito (D) are smaller,
delicate hemostats. Allis (E) have teeth and are used for grasping tissue, not hemostasis.
Q2. A surgeon is about to close the abdominal fascia and asks for a needle holder. He specifies
that he wants one with a ratchet, a short jaw, and a tungsten carbide insert for a secure grip
on the needle. Which instrument is most appropriate?
A) Mayo-Hegar needle holder
B) Webster needle holder
C) Castroviejo needle holder
D) Ryder needle holder
E) Crile-Wood needle holder
Detailed Answer:
Correct Answer: A
The Mayo-Hegar needle holder is the most common general-purpose needle holder. It has a
ratchet, relatively short jaws, and often has tungsten carbide inserts (TC) to prevent needle
slippage and wear. Webster (B) is a finer, longer needle holder for vascular surgery. Castroviejo
(C) is a spring-loaded, delicate holder for microsurgery. Ryder (D) is for cardiovascular surgery
with a longer shaft. Crile-Wood (E) is a hybrid but less common.
,Q3. A surgical technologist is setting up a tray for a thyroidectomy. The surgeon requests an
instrument to retract the strap muscles and the thyroid gland gently without penetrating the
capsule. Which retractor is most suitable?
A) Army-Navy retractor
B) Richardson retractor
C) Senn retractor
D) Farabeuf retractor
E) Joll's retractor
Detailed Answer:
Correct Answer: E
Joll's retractor is a specialized, curved, self-retaining retractor used specifically in thyroid surgery
to retract the sternothyroid and sternohyoid muscles laterally and expose the thyroid gland. It
has blunt, curved blades. Army-Navy (A) is a handheld, double-ended retractor used for
superficial wounds. Richardson (B) is a large handheld retractor for deep abdominal wounds.
Senn (C) is a small, double-ended retractor with both sharp and blunt ends. Farabeuf (D) is a
handheld retractor with a curved blade for retracting deep wound edges.
Q4. During a bowel resection, the surgeon needs to occlude the bowel lumen to prevent
spillage of contents while also allowing for clamping of the mesentery. Which instrument has
a longitudinal serration pattern and is designed to minimize tissue trauma while providing a
secure grip on the bowel?
A) Kocher clamp
B) Allis clamp
C) Babcock clamp
D) Doyen clamp
E) Satinsky clamp
Detailed Answer:
Correct Answer: C
Babcock clamp is a non-crushing, atraumatic clamp with broad, fenestrated jaws. It is
specifically designed to grasp delicate structures like the bowel, fallopian tubes, or appendix
without causing trauma. Kocher (A) crushes tissue. Allis (B) has teeth and is traumatic. Doyen
(D) is an intestinal clamp with a soft, rubber-covered jaw to occlude the bowel lumen without
crushing. Satinsky (E) is a side-biting vascular clamp.
,Q5. A surgeon is performing a vascular anastomosis and needs a fine, angled, non-crushing
clamp to partially occlude the side of the aorta. Which instrument is most appropriate?
A) Potts-Smith clamp
B) Cooley clamp
C) Satinsky clamp
D) DeBakey clamp
E) Bulldog clamp
Detailed Answer:
Correct Answer: C
The Satinsky clamp (also known as a partial occlusion clamp) is a curved, angled clamp with a
long, atraumatic jaw. It is designed for side-biting occlusion of a vessel, such as the aorta during
a bypass graft anastomosis, without completely stopping flow. Potts-Smith (A) is a straight or
angled vascular clamp for end-to-end anastomosis. Cooley (B) is a smaller, delicate vascular
clamp. DeBakey (D) is an atraumatic vascular clamp with a longer jaw for occluding large
vessels. Bulldog (E) is a small, spring-loaded clamp for temporary occlusion of small vessels.
Q6. The scrub nurse hands the surgeon an instrument with a curved, blunt-tipped jaw and a
ratchet. The surgeon uses it to dissect tissue bluntly and to clamp blood vessels. This
instrument is most likely a:
A) Mixter (right-angle) forceps
B) Kelly forceps
C) Metzenbaum scissors
D) Pennington clamp
E) Heaney clamp
Detailed Answer:
Correct Answer: A
The Mixter forceps (right-angle forceps) is a curved, blunt-tipped hemostat with a ratchet,
commonly used for blunt dissection around structures (e.g., cystic duct, vascular pedicles) and
for passing ligatures around vessels. Kelly (B) is a straight or curved hemostat with a blunt tip
but is not typically used for dissection around a vessel. Metzenbaum (C) are scissors. Pennington
(D) is an atramuatic clamp for crushing. Heaney (E) is a heavy clamp for hysterectomy.
Q7. A surgeon is closing the skin and requests an instrument to hold the skin edges in a
gentle, non-crushing manner to evert the edges for suturing. The instrument has a wide, flat
jaw with fine serrations. This is a:
, A) Adson-Brown forceps
B) DeBakey forceps
C) Russian forceps
D) Tissue forceps (1x2 teeth)
E) Splinter forceps
Detailed Answer:
Correct Answer: A
Adson-Brown forceps (or Adson forceps with teeth) are fine, thumb forceps with a wide, flat jaw
that has fine serrations (or 1x2 teeth on the Brown version). They are used to grasp skin or
delicate tissue with minimal trauma. DeBakey (B) is similar but has a longitudinal groove and is
used in vascular surgery. Russian (C) has a round, cupped jaw. Tissue forceps (D) have 1x2 teeth
and are more traumatic. Splinter forceps (E) are pointed.
Q8. A patient undergoes a laparoscopic cholecystectomy. The surgeon places a trocar through
the abdominal wall. The most important safety feature of a trocar to prevent injury to
underlying structures is:
A) A pyramidal tip
B) A spring-loaded safety shield that covers the tip upon entry
C) A bladeless, dilating tip
D) A transparent cannula
E) A locking mechanism for the cannula
Detailed Answer:
Correct Answer: B
The safety shield (or "safety trocar") is a spring-loaded mechanism that covers the sharp tip of
the obturator as soon as it enters the peritoneal cavity, preventing inadvertent injury to bowel
or vessels. Pyramidal tips (A) are sharp and can cause injury. Bladeless dilating tips (C) are also
used but the safety shield is the primary safety feature. Transparency (D) and locking (E) are
secondary.
Q9. A surgeon is performing a mastectomy and needs an instrument to grasp and retract the
skin flaps without crushing or causing necrosis. The instrument has a wide, curved,
fenestrated blade and is often used for grasping the breast parenchyma. This is a:
A) Allis clamp
B) Babcock clamp
C) Lahey forceps
