mock exam 3 Flashcards

1
Q

examples of valveless circuits (open circuits) include

A

ayres t piece
ether mask

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2
Q

semi open circuits (with an APL valve) include

A

the maples series
bain circuit
jackson rees

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3
Q

the modified brice interview includes

A
  1. what was the last thing you remember before going to sleep?
  2. what was the first thing you remember after waking up?
  3. do you remember anything between going to sleep and waking up?
  4. did you dream during the procedure?
  5. what was the worst thing about your procedure?
    do not straight up ask if they had awareness under anesthesia
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4
Q

for every inch above the heart, the real MAP is how many mmHg below what you see on the monitor?

A

2mmHg

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5
Q

placenta accreta

A

attaches to surface of myometrium

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6
Q

placenta increta

A

invades the myometrium (worse than accreta)

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7
Q

placenta precreta

A

worst. extends beyond uterus

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8
Q

charles’ law

A

pressure is constant
temperature and volume are directly proportional
V/T * P

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9
Q

boyles law

A

temperature is constant
volume and pressure are indirectly proportional
P*V * T

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10
Q

gay lussacs law

A

volume is constant
pressure and temperature are directly proportional
P/T * V

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11
Q

maximum tumescent dose of lidocaine (think liposuction)

A

35-55mg/kg

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12
Q

which components are present in cryprecipitate

A

fibrinogen
fibronectin
vWF
factor 8 (missing in hemophilia A)
factor 13

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13
Q

stop active cooling for the patient with MH when the core temperature decreases to

A

38-38.5c

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14
Q

maximum inflation pressure for LMA classic? (aka inflating the cuff)

A

60cmH2O

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15
Q

what happens to CVP, PAOP, PADP during LV failure?

A

CVP normal
PADP, PAOP increased

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16
Q

what happens to CVP, PAOP, PADP during RV failure?

A

increased CVP
PADP, PAOP normal

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17
Q

what happens to CVP, PAOP, PADP during pHTN?

A

increased CVP, PADP
normal PAOP

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18
Q

zone 3 for MRI is

A

MRi control room

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19
Q

zone 4 for MRI is

A

room with MRI scanner

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20
Q

what is the cause of radial nerve injury and how does it present

A

caused by external pressure at the spiral groove of the humerus. form surgical retractor or IV pole
presents as wrist drop

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21
Q

what is the cause of ulnar nerve injury and how does it present

A

caused by external pressure at the post condylar groove of the humerus
risk associated with pronated arm when patient is in supine position
presents as inability to oppose the 5th finger

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22
Q

pKa value of lidocaine

A

7.9

23
Q

pKa value of bupivicaine

A

8.1

24
Q

pKa value of chlorprocaine

A

8.7

25
Q

pKa value of tetracaine

A

8.5

26
Q

oxybarbiturates defining characteristic and examples

A

oxygen atom at the 2nd position
examples include methohexital, phenobarbital, secobarbitol

27
Q

thiobarbiturates defining characteristic and examples

A

sulfur at the 2nd position (sulfur increases solubility and potency)
examples include thiopental and thiamylal

28
Q

what should be removed for patients with MG?

A

thymus

29
Q

can bronchial blockers be used in kids under 12

A

no

30
Q

can bronchial blockers be used in patients with a tracheostomy?

A

yes

31
Q

nerves most likely to be injured after incorrect lithotomy positioning include

A

sciatic
common peroneal
posterior tibial
saphenous
obturator

32
Q

neuron order in spinothalamic tract

A

first order neuron: dorsal root ganglia
second order neuron: dorsal horn of the spinal cord
third order neuron: thalamus

33
Q

steps involved in the synthesis of NE and EPI

A
  1. tyrosine to dopa via dopamine hydroxylate
  2. dopa to dopamine via dopa decarboxylase
  3. dopamine to NE via dopamine-beta-hydroxylase
  4. NE to EPI via phentolamine N methyltransferase
34
Q

which kind of laser can cause damage to the cornea and what color glasses should we wear

A

carbon dioxide, clear glasses, cornea (not retina) c, c, c

35
Q

block helpful for cancer patients who have pain in pelvic organ region

A

superior hypogastric plexus block

36
Q

how long before surgical incision can vancoymycin be given?

A

2 hours, the only exception to the one hour rule

37
Q

define henrys law

A

amount of gas dissolved in solution is directly proportional to the partial pressure of the gas over the solution

38
Q

define grahams law

A

the rate of gas diffusion is inversely proportional to the square root of its molecular weight

39
Q

what are the two laws incorporated into ficks law/equation

A

grahams law and henrys law

40
Q

ficks law: the rate of transfer of gas through a tissue medium is directly proportional to

A

partial pressure difference (driving force)
diffusion coefficient (solubility)
membrane surface area

41
Q

ficks law: the rate of transfer of gas through a tissue medium is indirectly proportional to

A

membrane thickness
molecular weight

42
Q

in which situations can ficks equation be applied?

A

diffusion hypoxia
patient with COPD and reduced alveolar surface area
calculation of CO

43
Q

arterial oxygen content equation

A

(1.34 * Hgb * SaO2) + (PaO2 * .03)

44
Q

if hgb saturation is 100%, then it carries how many oxygen molecules?

A

2 O2 molecules (8 O2 atoms)

45
Q

if hgb saturation is 75%, then it carries how many oxygen molecules?

A

3 O2 molecules (6 O2 atoms)

46
Q

if hgb saturation is 50%, then it carries how many oxygen molecules?

A

2 O2 molecules (4 O2 atoms)

47
Q

if hgb saturation is 25%, then it carries how many oxygen molecules?

A

1 O2 molecule (2 O2 atoms)

48
Q

debakey classification

A

type 1 involves ascending and descending aorta
type 2 involves ascending aorta only
type 3 involves descending aorta only

49
Q

stanford classification

A

type A involves ascending aorta and may or may not involve the descending aorta
type b involves the descending aorta only

50
Q

crawford classification

A

I-V involve descending thoraco abdominal aorta

51
Q

absolute contraindications to ECT therapy include

A

MI within 4-6 weeks
CVA within 3 months
intracranial surgery within 3 months
brain tumor
unstable cervical spine
pheochromocytoma

52
Q

patient factors in favor of CEA include

A

intolerance of antiplatelet agents
severe renal impairment (contrast dye used for stenting)

53
Q

patient factors in favor of carotid artery stenting include

A

CHF with EF 30%
CAD with unstable angina, stress test, or MI <1 month ago
valvular heart disease
severe obesity
contralateral RLN dysfx

54
Q

aortic valve stenosis is considered severe when the valve orifice is less than

A

0.8cm^2 (normal 2.5-3.5)