Wound Repair
Which amino acid can promote wound healing?
arginine
Which type of flap is completely undermined and rotated 180 degrees to cover a defect?
propeller
Replantation of which body part may not require a venous anastomosis?
ear
FDA recommendations for breast implant screening
5-6 years after placement with US or MRI every 2-3 years
Most common complication of fat grafting?
resorption
Which type of dressing has the best overall survival of STSG?
wound vac
What changes occur in femoral vein after DIEP? (2)
increased diameter
decreased flow velocity
What is the MOA of papaverine?
phosphodiesterase inhibitor
What is the maximum gap that can be reconstructed with a nerve tube?
3 cm
Which is the primary mechanism of bony healing with cancellous bone graft? cortical bone graft? vascularized bone?
cancellous - osteoinduction
cortical - osteoconduction
vascularized - osteogenesis
For the same cross section, which type of suture is stronger: monofilament or multifilament?
multifilament
What are the three mechanisms of bone healing?
osteoconduction, osteoinduction, osteogenesis
Which two intra-operative factors can increase risk of flap loss?
intraop hypotension
large volume fluid administration
Which disease is Ralstonia pickettii associated with and which irrigation solution is the most effective against it?
BIA ALCL
hypochlorous acid (Vashe)
Which vitamin is essential in collagen formation?
Vitamin C
Absorbable vs permanent:
Polypropylene
Polydioxanone
Poliglecaprone
Polyglactin
Polyester
Polypropylene (Prolene) - permanent
Polydioxanone (PDS) - absorbable
Poliglecaprone (Monocryl) - absorbable
Polyglactin (Vicryl) - absorbable
Polyester (Ethibond) - permanent
What is the estimated take after fat grafting?
50-80%
Which technique may be equivalent to suturing in nerve repair?
What is the primary disadvantage of methyl methacrylate?
Exothermic reaction requiring irrigation to not burn surrounding tissues
Which portion of calvarium to harvest graft from and why?
parietal
relatively flat, away from sagittal sinus, less noticeable***
Which nutrient deficiency may cause skin lesions, hypogeusia, and nyctalopia (<-and what is that)?
zinc
night blindness
What is the term for implanting an axial blood supply into the donor tissue with the intention of later free tissue transfer?
What is the term for engrafting tissue into a reliable vascular bed to create a composite flap with the intention of later free tissue transfer?
1) prefabrication
2) prelamination
Which class of medications can be given during flap salvage and what is a specific goal of use?
thrombolytics (alteplase = tPA)
may decrease fat necrosis
What is a benefit of PEEK over titanium mesh in cranioplasty? What is a benefit of titanium mesh over PEEK?
PEEK is radiolucent, easier surveillance
titanium is not an inlay and can accommodate some cerebral edema
After previous wide undermining, which local flap can still be used?
bipedicled