Your-Doctor Multiple Choice Questions (MCQ)

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Category: Plastic Surgery--->Basic principles and basic science
Page: 1

Question 1#Print Question

Which one of the following is true regarding collagen?

a. Its derivation is debated: either from the Greek for ‘strength’ or the Latin for ‘strand’
b. Type 1 collagen is formed from three identical ‘alpha’ chains
c. Type 3 collagen is formed from two different ‘alpha’ chains
d. Every third amino acid in collagen is glycine, the others usually being proline and hydroxyproline
e. Collagen is stabilized by polymerization

Question 2#Print Question

With regards to anticoagulants in microsurgery:

a. Heparin and antithrombin III have similar mechanisms of action
b. Unfractionated and fractionated heparins have different proportions of anti-Factor Xa and antithrombin activity
c. Heparin-induced thrombocytopenia is a more frequent complication of unfractionated prophylactic heparin than of fractionated prophylactic heparin use
d. The antiplatelet drug aspirin is contraindicated in patients younger than 16 years of age
e. Dextran anticoagulation is pharmacologically reversible

Question 3#Print Question

Which landmark publication related to free tissue transfer is correct?

a. The first successful thumb replantation was performed by Komatsu and Tamai in 1967
b. The first clinical series of free tissue transfers was published by Nakayama in 1969
c. Cobbett performed the first successful free great toe-to-hand transfer in humans in 1968
d. McLean and Buncke performed the first free omentum flap in 1971
e. None of the above is true

Question 4#Print Question

Concerning composite tissue allotransplantation, which of the following is true?

a. Corticosteroids are used for both maintenance therapy and treatment of acute rejection episodes and act by inhibiting NF-kB activation and inflammatory cytokine production
b. Antithymocyte globulin (ATG) is an induction agent which binds cell surface antigens, and depletes T cells
c. Tacrolimus (FK 506) blocks the production of IL-2 and has been shown in recent studies to possibly speed up nerve regrowth
d. Mycophenolate mofetil (MMF) prevents T-cell proliferation and differentiation
e. All of the above

Question 5#Print Question

In relation to free tissue transfer, which one is true?

a. The anterolateral thigh free flap, by definition, is based on the descending branch of the lateral circumflex femoral artery
b. The superficial inferior epigastric artery pedicle is absent in approximately 5% of cases
c. The skin paddle of the fibula osteoseptocutaneous free flap is an unreliable indicator of the blood supply to the fibula bone
d. Some surgeons are capable of performing microsurgery without the aid of a surgical microscope
e. None of the above is true

Category: Plastic Surgery--->Basic principles and basic science
Page: 1 of 12