Surgery facts Flashcards
Least inflammatory nonabsorbable suture?
Polypropylene (prolene)
Most inflammatory nonabsorbable suture
Silk
Longest lasting absorbable suture?
PDS (polydioxanone) 180 days
Graft with less contraction?
Full-thickness skin graft
Graft with less necrosis due to decreased vascular requirement?
Split-thickness skin graft
Local anestetic with the shortest duration?
Procaine
Local anesthetic with longest duration?
Bupivacaine (etidocaine next)
Derivation of muscles of mastication?
First branchial arch
Derivation of facial expression muscles?
Second branchial arch
Muscle needed to pull corners of mouth downward?
Depressor anguli oris (DAO)
Muscle needed to dilate nostrils?
Levator labii superioris alaeque nasi
Sensory innervation to root of nose, lateral nasal sidewalls?
Infratrochlear nerve
Sensory innervation to nasal dorsum and tip?
External nasal branch of anterior ethmoidal nerve
Sensory innervation to tympanic membrane?
Auriculotemporal nerve
Internal and external carotid artery anastomosis?
Dorsal nasal artery (ICA) with angular artery (ECA)
Type of excision best over convex surface?
S-plasty
Type of excision for reducing length of scar?
M-plasty
Process by which synthetic materials (i.e. polyglycolic acid) is absorbed?
hydrolysis
Process by which natural material (cat gut, silk) absorbed?
Proteolysis
Antiseptic with flammable property?
Isopropyl alcohol
Antiseptic inactivated by blood/sputum, +/- contact dermatitis?
Providone-iodine
Antiseptic with neurotoxic effects (teratogenic as well)?
Hexachlorophene
Antiseptic with ototoxicity and ocular irritation?
Chlorhexidine
Scar strength at 2 weeks, 3 weeks, 6 weeks, and 1 year?
5%, 15%, 40%, 80%
Temperature needed for melanocytic destruction?
(-5 degrees celcius)
Temperature to destroy skin cancer?
(-50 degrees celcius vs -25 degrees for benign lesion)
Temperature for destruction of keratinocyte?
(-25 degrees celcius)
Maximum safe dose of lidocaine for tumescent anesthesia?
55 mg/kg
