CFA Hemostasis & Suture Techniques 2

Question 1

Which electrosurgical mode uses a continuous waveform to cut tissue with minimal hemostasis?

Accepted Answer

Cut mode

Answer

Cut mode uses a continuous waveform that rapidly heats tissue to vaporize cells, producing cutting with minimal coagulation effect.

Question 2

A surgeon requests 3-0 Vicryl for a subcutaneous closure. What type of suture material is Vicryl?

Accepted Answer

Absorbable braided synthetic

Answer

Vicryl (polyglactin 910) is an absorbable braided synthetic suture that loses tensile strength over approximately 3–4 weeks.

Question 3

When applying a hemostat to a bleeding vessel, the tip of the instrument should be directed:

Accepted Answer

Parallel to the vessel, grasping only the vessel wall

Answer

The hemostat tip should be parallel to the vessel, grasping only the vessel wall to avoid inadvertently clamping adjacent structures.

Question 4

Bone wax is primarily used to achieve hemostasis by which mechanism?

Accepted Answer

Physical tamponade of bleeding bone channels

Answer

Bone wax mechanically occludes the haversian canals and cancellous spaces of bleeding bone, acting as a physical tamponade agent.

Question 5

Which suture needle type is preferred for anastomosis of delicate vascular structures?

Accepted Answer

Tapered (round body)

Answer

Tapered (round body) needles push tissue aside without cutting, reducing the risk of vessel wall tears during vascular anastomosis.

CFA Practice Test