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Numbers Flashcards

(14 cards)

1
Q

PVR formula

A

PVR = 80*(PAP – PCWP)/CO, normal 100-200 dyn-s/cm5

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2
Q

SVR formula

A

SVR = 80*(MAP – CVP)/CO, normal 900-1200 dyn-s/cm5

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3
Q

Normal PA systolic is what % of SBP

A

Note that normal PA_systolic is 1/8th systemic SBP, and that pulmonary hypertension is defined as PA_systolic is > 1/4 systemic.

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4
Q

Normal PVR value

A

100-200 dyn-s/cm5

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5
Q

Normal SVR value

A

900-1200 dyn-s/cm5

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6
Q

height and bp change

A

0.7mm Hg for every centimeter cuff is above or below the heart

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7
Q

Normal cardiac output adult

A

4-6.5 ml/min

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8
Q

Alveolar gas equation

A

pAO2 = FiO2 (Patm – pH20) – (paCO2/RER)

pAO2 = (FiO2 x 713 mmHg) – (paCO2/0.8)

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9
Q

normal ICP values

A

normal at rest 5-15
intracranial hypertension 25-40
threshold of death 60
brain death 80

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10
Q

goal CPP in TBI

A

60

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11
Q

dibucaine number

A

percentage that dibucaine inhibits the hydrolysis of benzoylcholine by pseudocholinesterae
normal = 80%
homozygous atypical 20%
heterozygous 40-60%

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12
Q

stump pressure threshhold

A

less than 50 ass’d with hypoperfusion

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13
Q

PFT results predict increased risk postop mech vent

A

FEV < 2L total
maximum breathing capacity <50% predicted
MMEFR <50% predicted (maximal mid expiratory flow rate)

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14
Q

extubation criteria in ICU

A

HD stable

complete reversal nmb

vital capacity >10 mL/kg
tidal volume >6 mL/kg
NIF >20cm H2O
PaO2 >60 with FiO2 <50%
PaCO2<50 mmHg
RR <30

normothermia

adequate pain control

leak test (auscultate breath sounds with cuff down and spont breathing)

following commands

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