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In service Prep > Plastics > Flashcards

Plastics Flashcards

1
Q

What are the major nasal tip support mechanisms

A
  1. Size and shape of lower lateral cartilages 2. Attachment of the lower lateral cartilages to the septum 3. Attachment of upper to lower lateral cartilage
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2
Q

What kinds of defects is the bilobed flap best used for in reconstruction?

A

Defects of nasal tip, dorsum, and side wall 1.5 to 2 cm or less

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3
Q

What is the best location to harvest a split Calabrian bone graft from?

A

2 cm inferior to the saggital suture on the parietal bone

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4
Q

How much negative pressure is required to perform cervicofacial liposuction

A

1 atm

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5
Q

How many weeks after injury does type III collagen start being replaced by type I

A

3 weeks

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6
Q

Most common draw back of open approach to rhino

A

Tip and Supra tip edema

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7
Q

What is the blood supply to the temporalis flap

A

Deep temporal artery

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8
Q

Which peel requires neutralization with water or 5% sodium bicarbonate?

A

Glycolic acid peel

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9
Q

How long does it take to establish new blood supply in a full thickness skin graft?

A

3-5 days

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10
Q

What is the syndrome depicted and how could you increase nasal tip projection in this patient

A

Binder syndrome (maxillo-nasal dysplasia), anterior caudal septal strut graft

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11
Q

Which local anesthetics associated with more allergic reactions (amides or esthers)

A

Amides

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12
Q

In what layer does the facial nerve lie in the temporal region?

A

deep to the temporoparietal fascia

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13
Q

What is a normal amount of collumellar show

A

2-3 mm

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14
Q

What is the sunderland classification of nerve injury

A
  1. neuropraxia
  2. axonotmesis: axon transected, endoneurium preserved
  3. neural tube transected: axon, myelin sheath, endoneurium
  4. Violation of perineurium
  5. Complete transection of nerve, pt at risk of forming neuroma
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15
Q

Where does the frontal branch of the facial nerve course deep to the SMAS (important to know in face lift)

A

0.5 cm anterior to the tragus to 1.5 cm lateral to the supraorbital rim

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16
Q

What condition will still be ok to have a rhytidectomy

A

Cutis laxa. Less elastin but normal collagen

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17
Q

What is Crumley’s method for calculating nasal tip projection

A

3-4-5 triangle and establishes a nasal angle of 36 degrees to be ideal

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18
Q

where should you inject botox for forehead rhytids?

A

should mnot extend past midpupillary line and should not come within 1 cm of orbital rim

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19
Q

Which approach to repair of orbital Floor fracture most likely to cause ectropion?

A

Subciliary

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20
Q

what are the minor nasal tip support mechanisms

A

Dorsal cartilagenous septum, interdomal ligament, membranous septum, nasal spine, surrounding skin and soft tissue, alar side walls

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21
Q

What do u use for pretreatment in chemical peel

A

Hydroqionone Retinoin Valtrex

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22
Q

Dedo class IV neck

A

Ptotic platysma

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23
Q

What causes the rocker deformity

A

Extending the lateral osteotomies too high close to the frontal bone

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24
Q

What is the ideal upper eyelid height in men?

A

6-9 mm

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25
Q

Which extraocular muscle is most commonly injured during blepharoplasty?

A

Inferior oblique, due to indiscriminate cautery of the fat pads

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26
Q

What is part of the SMAS

A

Galea aponeurotica Platysma Temporiparietal fascia Parotidomasseteric fascia is NOT part of the smas

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27
Q

People with short nasal bones are at risk for _______ after osteotomies

A

Internal valve collapse Inverted V deformity Consider spreader grafts in your preop planning

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28
Q

what muscles of facial expression are innervated on their superficial surface by facial nerve

A

Buccinator, mentalis, and levator anguli oris

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29
Q

Green tattoos targeted by

A

Ruby and alexandrite laser

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30
Q

What is the Q stitch nidium yag laser used for?

A

Tattoo removal

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31
Q

How common is a common lingual-facial artery trunk?

A

10-15% of cases

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32
Q

What are concave regions of the face that are most likely to heal well with secondary intention?

A

NEET: nose, eye, ear, and temple

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33
Q

Which muscle in mid face is most affected by aging

A

Orbicularis oculi

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34
Q

Lugols solution

A

Potassium Iodide and Elemental Iodide in Water

35
Q

What is Goode’s method for determining nasal projection

A

Uses Frankfurt horizontal plane to calculate the distance from the nasal tip to the alar-facial crease and distance of nasal tip to the nasion

36
Q

Major tip support mechanisms of nasal tip

A

Size shape and resilience of lower lateral cartilages Attachment of medial crural footplate to caudal septum Scroll/where upper and lower lateral cartilages interlock

37
Q

Describe the lengths achieved by different angle z - plasties

A
38
Q

What are the 4 types of pivotal flaps

A

Rotational, transposition, interpolated, and island

39
Q

Jessner Solution

A

resorcinol, salicylic acid, lactic acid, ethanol, trichloracetic acid (35%), medium depth chemical peel

40
Q

What is a dedo class III neck

A

Subcutaneous or subplatysmal adiposis

41
Q

How long does it take to establish new blood supply into a full thickness skin graft

A

3-5 days

42
Q

How to increase projection without increasing rotation?

A

Lateral crural steal Vertical dome division Columellar strut Suture suspension of the tip

43
Q

By what age does the auricle reach 95% of its adult size

A

6

44
Q

What is a Dedo class I neck

A

Smooth and contoured neck

45
Q

Baker Gordon Solution

A

Deep chemical peel, 88% phenol, water, liquid soap, croton oil

46
Q

What’s the most common complication of tip deprojection

A

Alar flaring

47
Q

What order do u do Botox and laser to improve the appearance of facial rhytids

A

Botox then laser two weeks later

48
Q

Dedo class II neck

A

Excess skin

49
Q

Minor tip

A

Interdomal ligaments Cartilaginous dorsal septum Skin soft tissue envelope Nasal spine Alar cartilages Septum

50
Q

What is the tongue in groove technique for decreasing tip projection

A

Moving medial crus back onto caudal septum

51
Q

What is the ideal upper eyelid height in women

A

8-11

52
Q

Red and orange colors in tattoos targeted by

A

Ruby laser

53
Q

What location does the superficial temporal artery pierce the parotidomasseterix fascia?

A

1 cm anterior and 1.75 cm superior to the EAC

54
Q

How long does it take for hair to regrow after a hair transplant

A

3 months

55
Q

what is the ideal upper eye lid crease height in women and men

A

8 - 11 mm for women, and 6 - 9 mm in men

56
Q

What can help eye ptosis after botox

A

Apraclonidine eye drops: sympathomimetic, affects mullers muscle Vysine otc

57
Q

what is a good landmark vein that reliable marks where the frontal branch of facial nerve is in the temporal region in endocopic brow liftt?

A

sentinel vein, branch of the zygomaticotemporal vein

58
Q

How much tip do you need to leave to still safely have tip support

A

7 mm

59
Q

Which antibiotics should you not use when getting Botox

A

Aminoglycosides

60
Q

What should be the vertical height of the ear

A

From the lateral brow to the subnasale

61
Q

What is mustarde sutures

A

To recreate antihelical fold, from concha to scaphoid

62
Q

What are Furnas

A

sutures from conchal bowl to mastoid, conchal set back

63
Q
A
64
Q

What is Gibson’s principle

A

When you score cartilage it weakens it and it is able to bend away from the side you have scored

65
Q

What nerves innervate the auricle

A

great auricular nerve, the auriculotemporal nerve (V3), the lesser occipital nerve, and the greater branch of the vagus nerve (Arnold’s nerve)

66
Q

What is the frankfurt horizontal plane?

A

line drawn from the EAC to the inferior orbital rim

67
Q

What makes up the anterior lamella of the eye

A

Skin and orbicularis oculi

68
Q

What makes up the posterior lamella of the eye

A

levator, conjunctiva

69
Q

What is a risk of lower lid blepharoplasty

A

lower lid retraction if you violate the orbital septum

70
Q

Which layer of orbicularis oculi do you not want to violate during bleph

A

pretarsal

71
Q

What is normal schirmer’s test?

A

>15 mms

72
Q

What is the MRD 1?

A

Distance from the pupillary light reflex to the ciliary line, should be 2.5 mm at least

73
Q

What is MRD 2

A

Distance from mid pupillary line to lower lid mucosa, 5 mm or less

74
Q

What should the length of the distance from lid to supratarsal fold?

A

9-11 mm

75
Q

How medial do you go for bleph

A

At level of punctum

76
Q

Most common mistake of upper bleph

A

underesection of medial orbital fat

77
Q

What is the most commonly injured muscle during blepharoplasty

A

inferior oblique

78
Q

What is the arcus marginalis, what is its relevance?

A

The extension of the orbital septum onto the orbital rim. It is what you want to release during brow lift

79
Q

What class of drug is apraclonidine

A

alpha 2 agonist

80
Q

What kind of graft for nasal reconstruction is leak likely ot resorb?

A

Split calvarial bone graft, bone that is derived from intramembranous ossification rather then endochondral (rib)

81
Q
A
82
Q

What is the tensile strength of a wound at 1 week post op, 3 weeks post op, 5 weeks post op, and 12 months?

A

3%, 30%, 60%, 80% (max)

83
Q

How does hydroquinone work to prevent pigmentation in post skin resurfacing?

A

It is a tyrosine kinase inhibitor, works by preventing conversion of tyrosine to dopa in melanocytes

84
Q

wavelength of Er:YAG and Nd:Yag respectively

A

Nd:YAG (1,320 nm), Er:YAG (2,940 nm)

In service Prep (11 decks)

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