2021 Questions Flashcards
P in primary HPTH
low phosphate, high calcium
opposite in secondary
What is protein C?
strong physiologic anticoagulant
What causes TRALI?
leukocyte antibodies in plasma
WPW treatment
procainamide
What is methemoglobinemia and what does it do to HgB?
oxidized Fe and causes left shift
Why do gases work faster for peds patient?
Higher alveolar ventilation
lower FRC
Ketamine IM dose
4mg/kg
What drug counteracts HTN meds?
ibuprofen
Dantrolene dose and max dose
2.5 and 10
What does lateral pharyngeal space abscess present as?
horners: miosis, ptosis, anhidrosis
Acute hepatotoxicity with APAP and what other drug?
statin
What does substance P do and what is it?
vasodilator, neuropeptide
Adenosine MOA
purine that blocks AV node by inhibiting adenylyl cyclase
When do elastic recoil of chest and lung equal?
FRC
What is volume of distribution dependent on?
lipid solubility
What determines onset of marcaine?
dissociation constant
What do halogenated anesthetics do to the lung?
bronchodilator
What tooth fx is most common?
Ellis III
NF angle
36-40
Nasal projection in Goode ratio
0.55-0.60
Type III nec fasc
clostridium
Bite wound closure and irrigation
high pressure at least 7 psi
What class increases risk of rebleed in hyphema?
3/4
By what mechanism does osteochondroma tumor grow?
lichtenstein: metaplastic changes in periosteum lead to osteoblastic and chondroblastic changes
What syndrome does Kleeblattschadel (clover leaf) present in and how does it present?
Pfeiffer type 2, hydrocephalus
Tip of nose intervention
external branch of anterior ethmoid
What marker is present in TMJ osteoarthritis?
IL-1B, MMP3
What does lichen planus histology present as?
t-cell mediated sub-basilar split with lymphocytes
Where do neurofibromas present and how do they stain?
peripheral nerves, s100
Safe pathologic and clinical margin for SCC
5mm and 1-1.5cm
Cisplatin MOA
interferes with DNA crosslinking
What is the difference between polylactic acid vs collagen membrane?
immune reaction is seen with PLA
Muscle pull in horizontal and vertically unfavorable man fx
masseter in horizontal
M pterygoid in vertical
When is adjuvant chemo indicated in SCC?
extracapsular spread +/- positive margins
Oral SCC location with highest cervical mets rate
FOM
Which has worst predictability for soft tissue graft around implant?
alloderm
Superior lateral pterygoid insertion
medial disc and capsule
What is Treacher Collins a disruption on?
1st and 2nd branchial arches
What type of lever is the mandible?
class III
What is sign of condylar parafunction?
collagen
Tx for osteosarcoma with positive margin
interarterial chemo
How to distinguish GB from periodic familial paralysis
GB- hyponatremic
PFP- hyper/hypokalemic
Cardiac complication of OSA
stroke, CHF
What happens if TAD hits dentin
external root resorption
Peridex decreases PNA by how much?
60%
What week do palatal arches fuse at?
6-10 weeks
Embryonic origin of junctional epithelium
reduced enamel epithelium
What does immediate provisionalization preserve?
marginal soft tissue and crestal bone
Anticoagulation for peds and flaps
dextran
Apfel risk factors for nausea
female, non smoker, h/p PONV, post op opioids
What does sintering of xenograft do?
slows resorption
cetuximab MOA
binds to EGF to inhibit tyrosine kinase
what does chondrosarcoma stain as?
cdk4
cancer stages
T1-S2
T2-S2
T3/N1 (0-3)-S3
T4/N2 (3-6 or multiple)-S4a
least likely of IV meds to cause QT prolongation
midazolam
Wilkes clinical
1-painless clicking 2-intermittent locking 3-limited opening 4-chronic pain 5-crepitus
Wilkes radiographic
1-early reduction 2-late reduction 3-non reducing disc 4-osseous changes 5-perforation
what lab does metabolic syndrome present with?
low HDL
Pt with ASA allergy, what can’t you give them?
dicoflenac
Pradaxa MOA
direct thombin inhibitor
How is articaine metabolized?
plasma esterase
