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Phase 2 - Chambers > Random Facts > Flashcards

Random Facts Flashcards

1
Q

Bregma junction

A

Junction on the median plane of the right and left frontoparietal sutures, or the point of crossing of the coronal and sagittal sutures

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2
Q

What runs through mastoid foramen?

A

caudal meningeal artery

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3
Q

What foramen does the facial nerve run through?

A

stylomastoid foramen along with the stylomastoid artery

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4
Q

What runs through the retroarticular foramen?

A

emissary vein, formerly called retroglenoid vein

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5
Q

What runs through the rostral alar foramen of the skull?

A

Maxillary artery and maxillary nerve

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6
Q

What are the branches of the trigeminal nerve?

A

The different branches are the ophthalmic, maxillary, and mandibular nerves.

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7
Q

What runs through the caudal palatine foramen?

A

Major palatine artery (which is a branch from descending palatine, a branch of maxillary a.)

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8
Q

What is the major proteoglycan of articular cartliage?

A

aggrecan

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9
Q

What is the predominant type of collagen in articular cartilage?

A

type 2

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10
Q

What can happen if you increase sodium levels faster than 0.5 meQ/hr?

A

central pontine myelinolysis

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11
Q

What happens if you decrease sodium faster than 1 mEq/hr?

A

cerebral edema

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12
Q

What fluid should you use to lower hypernatremia?

A

D5W
deficit = 0.6 x kg x (Na present/(Na normal -1))

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13
Q

Things that shift potassium intracellularly (leading to hypokalemia)?

A

alkalosis
insulin
catecholamines
aldosterone
beta agonists

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14
Q

ECG changes at hyperkalemia 6

A

High potassium will decrease resting membrane potential of cardiac myocytes and then hyperpolarize. Leads to bradycardia, spiked t waves

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15
Q

ECG changes with hyperkalemia at 7-8

A

High potassium will decrease resting membrane potential of cardiac myocytes and then hyperpolarize. Prolonge P-R and wide QRS

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16
Q

ECG changes with hyperkalemia at >8.5

A

High potassium will decrease resting membrane potential of cardiac myocytes and then hyperpolarize. Lose P wave, increased S wave. At 10 –> asystole

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17
Q

Where does PTH come from?

A

Chief cells of the parathyroid gland

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18
Q

Where does calcitonin come from?

A

Parafollicular or C cells of the thyroid

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19
Q

What electrolyte abnormalities will you see with refeeding syndrome?

A

hypophosphatemia
hypokalemia
hypomagnesemia

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20
Q

How does PTH influence phosphorus levels?

A

PTH increases renal excretion of phosphorus

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21
Q

What breeds are hypersensitive to hemolysis with hypophosphatemia?

A

Akita
Shiba Inu
Jindo

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22
Q

What percent of oncotic pressure is attributable to albumin?

A

80%

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23
Q

What is the primary extracellular buffer of the body?

A

bicarb. 90-95% is reabsorbed in the proximal tubule of the kidney

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24
Q

What is Virchow’s triad?

A

intravascular vessel wall damage, stasis of flow, and the presence of a hypercoagulable state

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25
what is the Bainbridge reflex?
The Bainbridge reflex (aka, atrial reflex) occurs when the heart rate increases in response to a rise in atrial pressure. This is a compensatory mechanism since increased right atrial pressures frequently result from elevated left heart pressures from decreased cardiac output
26
Halsted's principles
1. gentle tissue handling 2. hemostasis 3. preserve blood supply 4. Asepsis 5. Tissue apposition 6. eliminate dead space 7. Minimize tension
27
Flow of CSF
lateral ventricles --> interventricular foramina --> third ventricle --> mesencephalic aqueduct --> fourth ventricle --> either central canal of spinal cord or the subarachnoid space via lateral apertures
28
What are the three buttresses of the maxilla?
rostral (nasomaxillary) lateral zygomaticomaxillary caudal ptyeromaxillary
29
With thin bone, how wide should the screw pitch be in comparison to bone width (such as in the maxilla)?
screw threads should be at least equal to bone width (this does not make sense in the book) but as an example they said that in bone that is 1-2 mm, the pitch should be 0.5-1 mm. Later in the chapter they say that to develop compression at the fracture site, the bone thickness must be at least 2x thread pitch
30
What are the four zones of the physis?
Resting zone (only vascularized zone) next to epiphysis Proliferative (stacked coins) Hypertrophic (round chondrocytes) Mineralization (columnar chondrocytes, secrete matrix for calcification)
31
What is the shape of vertical force for a single limb in a kinetic study at the trot? At the walk?
Bell shape during trot. M shape during walk
32
What types of values are seen for craniocaudal (Fy) force with braking? With propulsion? With a CrCL tear? With a thoracic limb lameness?
- Craniocaudal force with braking (decceleration) is at the beginning of the stance phase and positive. It is also the larger force in forelimbs - Craniocaudal force with propulsion (acceleration) occurs at the limb pushing off and is negative. It is the greater force in pelvic limbs - dogs with a CrCL injury usually have a decrease in both braking and propulsive forces - patients with a forelimb lameness will usually have braking more affected than propulsion
33
What is the impulse value in a kinetic study?
The area under the force-time curve. Impulse value considers force and contact time
34
What does the L indicate in 316L stainless steel and how does that affect corrosion resistance?
The L refers to the low carbon content of 316L. Low carbon content improves corrosion resistance
35
What are the primary elements of stainless steel (four of them)
iron chromium nickel molybdenum
36
What is the etiology of pes varus in Dachshunds?
eccentric premature closure of the medial portion of the distal tibial physis
37
What are the two methods of joining an axial pattern flap and defect when there is intact skin between the flap and the wound?
Bridging incision or tubing the flap
38
How much plasma is required to increase albumin by 1.0 g/dL?
30-45 ml/kg of plasma is needed to increase albumin by 1.0
39
What is Poiseuille's law?
Flow = Pi*change in pressure*r^4/(8*viscosity*length) Basically, resistance to flow is inversely related to the radius to the fourth power. An increase in radius will greatly decrease resistance to flow
40
What is the Hering Breuer reflex?
stretch reflex controlling the rate and depth of respiration
41
What is the most common fungal pathogen in the nose of dogs? In cats?
dogs - Aspergillus fumigatus cats - Cryptococcus neoformans
42
What is the normal ratio/percent of tracheal diameter to thoracic inlet in a dog? In a bulldog?
In a normal dog, the trachea is 20% of the length of the thoracic inlet. In a bulldog, it is about 12%
43
What does the cranial laryngeal nerve innervate?
the cranial laryngeal nerve comes off the vagus before it goes on its long wandering journey. It innervates the cricothyroideus and provides sensation to the laryngeal mucosa. The caudal laryngeal is the termination of the recurrent laryngeal and innervates all other intrinsic laryngeal muscles
44
What are the stages of laryngeal collapse?
I - everted laryngeal saccules II - cuneiform processes collapse in III - corniculate process collapse in
45
What is the most common long term complication following a transphenoidal hypophysectomy?
diabetes insipidus and hypothyroidism. You may need lifelong vasopressin supplementation for the diabetes insipidus
46
Name differentials for a destructive bone lesion?
Neoplasia (adenocarcinoma is most common in dog) inflammatory rhinitis infectious (fungal) rhinitis foreign body dental dx
47
How big should a stoma be for a cholecystoduodenostomy or cholecystoenterostomy?
At least 4 cm to decrease the risk of stricture of the stoma and allow reflux to flow back into the small intestines. Other complications of this procedure besides stricture of the stoma include dehiscence, cholangiohepatitis, hepatic abscess, acquired PSS, pancreatitis
48
What is metacarpal periostitis?
increased bone density as a result of repetitive stress. Seen in racing greyhounds
49
Where do the pulmonary veins travel in relation to the bronchus?
caudal and ventral aspect of each bronchus
50
What are the five causes of hypoxemia?
hypoventilation low inspired O2 diffusion impairment V/Q mismatch Shunting
51
How does a therapeutic laser supposedly treat MS/ortho pain?
- photons are emitted from the laser and absorbed by cytochrome C in the mitochondria --> increases cellular metabolism - pain relief is from decreased production of inflammatory mediators like PGE2, TNF, COX2 - pain relief may also be from increased endogenous opioid production and reduced nerve conduction velocity - wound healing is enhanced by increased fibroblast proliferation, differentiation, collagen deposition, neovascularization
52
What are the depths of penetration for laser light therapy?
650 nm for superficial tissues like wounds 900 nm for deeper tissues (infrared spectrum)
53
How are surgical site infections classified to the CDC?
superficial, deep, or organ/cavity - superficial - skin or SQ and within 30 days of sx - deep - muscle or fascia and within 30 days or up to a year if there is an implant - organ/cavity - within 30 days of sx or up to a year if there is an implant
54
What is the functional residual volume?
about 45 ml/kg it is the volume of air in the lungs at the end of exhalation. It is also the point at which forces of the lung and chest wall are equal and opposite
55
What parameters does the animal trauma triage ATT score evaluate?
perfusion cardiac function respiratory disease eye/muscle/integument damage skeletal disease neuro disease
56
Eisenmenger syndrome
Eisenmenger syndrome refers to any untreated congenital cardiac defect with intracardiac communication that leads to pulmonary hypertension, reversal of flow, and cyanosis First described for VSD reverse shunting but also can be used for PDA shunt reversal
57
Tetralogy of Fallot
Consists of pulmonic stenosis, perimembranous vsd, overriding aorta, right ventricular hypertrophy
58
What is pulsus paradoxus
Pulsus paradoxus seen with cardiac tamponade. Blood pressure change with inhalation and exhalation: during inspiration, left ventricular end-diastolic volume, left heart output, and arterial pressure are decreased resulting in variation of systolic arterial pressures often greater than 10 mmHg
59
What is electrical alternans?
Electrical alternans is beat-to-beat variability of the QRS complex on electrocardiogram, often found in the setting of pericardial effusion
60

Phase 2 - Chambers (3 decks)

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