Multiple Choice Questions MCQ

Question 41# Print Question

Regarding free tissue transfer:

A. Primary then secondary ischaemia are mandatory events for free tissue transfer to proceed

B. The no-reflow phenomenon is peculiar to free tissue transfer

C. A pseudo-intima forms within a successful microvascular anastomosis after approximately 10 days

D. The presence of subendothelial damage will cause anastomotic thrombosis and failure

E. None of the above is true

Question 42# Following split thickness skin grafting:
A. The mitotic activity is static
B. The nuclei and cytoplasm decrease in size
C. The epithelium increases in thickness during the first 3 weeks
D. Enzymic activity increases in the first 3 days
E. The fibrocyte population increases in the first 3 days post-graft

Question 43# After the age of 35:
A. The dermis gradually thickens
B. Skin elasticity increases
C. Sebaceous gland content increases
D. The dermis gradually thins
E. There is no loss of sebaceous gland content

Question 44# At the site of a microvascular anastomosis the following events occur in the correct order:
A. Pseudo-intima, platelet aggregation, fibrin formation, endothelium
B. Fibrin formation, platelet aggregation, endothelium, pseudo-intima
C. Platelet aggregation, fibrin formation, pseudo-intima, endothelium
D. Fibrin formation, platelet aggregation, pseudo-intima, endothelium
E. None of the above
The events necessarily occur in the order shown in C. Platelet aggregation is required for fibrin formation which enables the formation of a pseudointima and endothelialisation.

Question 45# The lateral arm free flap is based on:
A. The posterior radial collateral artery
B. The anterior radial collateral artery
C. The posterior ulnar collateral artery
D. The anterior ulnar collateral artery
E. The lateral circumflex humeral artery

Question 41# Regarding free tissue transfer:
A. Primary then secondary ischaemia are mandatory events for free tissue transfer to proceed
B. The no-reflow phenomenon is peculiar to free tissue transfer
C. A pseudo-intima forms within a successful microvascular anastomosis after approximately 10 days
D. The presence of subendothelial damage will cause anastomotic thrombosis and failure
E. None of the above is true
Primary flap ischaemia is a mandatory event of free tissue transfer. Secondary (or tertiary, quaternary and so on) flap ischaemia occurs when the flap experiences another episode of ischaemia following revascularisation. A pseudo-intima usually lines the anastomosis by postoperative day five. The presence of subendothelial damage does not necessarily cause anastomotic thrombosis (and/or failure) but does influence the method by which the anastomosis heals. Therefore, none of the statements (A, B, C or D) are true.