Acute Respiratory Distress Syndrome Flashcards

1
Q

What is ARDS other wise known as

A

post traumatic lung

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2
Q

what is ARDS

A

severe damage done to the alveoli and cap wall

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3
Q

what does this severe damage cause

A

injury causes inflammation which causes an increase in permeability (becomes uncontrolled)

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4
Q

Aetiology of ARDS

A
chest trauma
DIC
burns
aspiration
septicemia
near drowning
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5
Q

Patho

A

lung trauma - neutrophil influx - inflammatory cells release free radicals, proteases, phospholipids - these cause damage to the endothelium and alveoli - increase perm - efflux of cells, proteins, fluids - these get into interstitial spaces and the alveoli - problematic 3rd spacing d/t the particles - decreased compliance and impaired gas exchange

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6
Q

Other patho

A

surfactant deficiency and inactivation = atelectasis
thick protein and cell rich exudate lines alveoli = no gas exchange
impervious (resistant) hyaline membrane lines alveoli - no gas exchange - profound hypoxemia

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7
Q

Manifestations

A

acute onset of rest distress
dyspnea, tachypnea,
early respiratory alkalosis (d/t tachypnea)
late metabolic acidosis (d/t anaerobic met = lactic acid)
diffuse consolidation

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8
Q

Treatment

A

early intervention
reverse the cause
resp support
treat complications ( AWARE, AVOID, DEAL)

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