CSFA Hemostasis and Wound Closure Flashcards
6 cards from real CSFA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CSFA Hemostasis and Wound Closure flashcards as text
Which electrosurgical mode uses a continuous waveform to cut tissue by rapidly heating cells until they vaporize?
Answer: Cut mode
Cut mode uses a continuous high-frequency current that rapidly vaporizes intracellular water, slicing through tissue.
What is the primary purpose of using a pledget in cardiac surgery?
Answer: To reinforce sutures in fragile tissue
Pledgets are small felt or Teflon bolsters used to reinforce sutures in friable or thin cardiac tissue to prevent tearing.
Topical thrombin works by converting which clotting factor to its active form?
Answer: Fibrinogen
Topical thrombin directly converts fibrinogen to fibrin, forming a clot at the site of application.
Which suture material is the first choice for closing a contaminated abdominal wound due to its resistance to infection?
Answer: Polypropylene (Prolene)
Polypropylene is monofilament and non-absorbable, resisting bacterial colonization better than braided or natural sutures in contaminated fields.
A bone wax is used intraoperatively primarily to achieve hemostasis in which structure?
Answer: Cut bone surfaces
Bone wax is a mechanical hemostatic agent applied to cut bone edges to occlude the marrow sinusoids and stop bleeding.
What distinguishes a figure-of-eight suture from a simple interrupted suture?
Answer: It passes through tissue twice in a crossing pattern, distributing tension over a wider area
A figure-of-eight suture crosses over itself, engaging tissue at two points and distributing closure tension more broadly than a simple interrupted suture.