LA pulm 3 Flashcards
FB aspiration, pleural effusion, pneumothorax, pulm HTN, ARDS, sleep apnea
what differentiates costochondritis from Tietze syndrome
Tietze syndrome has the presence of palpable edema
most common foreign body aspirated in children
peanuts
what is mean age for FB aspiration and why
2 years, no molars
complications include bronchiectasis, pneumonia, lung abscess, atelectasis
FB aspiration
definitive dx test for FB aspiration
rigid bronchoscopy, therapeutic as well sometimes
what is the parapneumonic type of pleural effusion
non infected pleural effusion, secondary to bacterial pneumonia
what is the empyema type of pleural effusion
direct infection of pleural space, purulent
what is the hemothorax type of pleural effusion
gross blood; trauma or malignancy
what is the chylothorax type of pleural effusion
increased lymph, persistent turbidity after centrifuge
most common type of pleural effusion
transudative; CHF most common
nephrotic syndrom, cirrohosis, atelectasis, hypoalbuminemia
think transudative pleural effusion due to increased hydrostatic pressure or decreased oncotic pressure
Pulmonary emboli and malignancy in pleural effusion
usually exudative
percussion, fremitus, breath sounds in a pleural effusion
all decreased, dullness
blunting of costophrenic angles/meniscus sign
CXR in pleural effusion
best film for pleural effusion
lateral decubitus
gold standard for pleural effusion from thoracentesis
lights criteria
1. pleural fluid protein : serum protein > 0.5 or
2. pleural fluid LDH : serum LDH >0.6 or
3. pleural fluid LDH >2/3 the upper limit of normal LDH
primary vs secondary pneumothorax
primary is idiopathic
secondary is underlying lung disease
percussion, fremitus, breath sounds in a pneumothorax
hyperresonance, decreased fremitus/breath sounds
what type of CXR(position)
expiratory upright view
companion lines
visceral pleural line running parallel with ribs; pneumothorax
pulm HTN is what pressure
elevated mean pulmonary arterial pressure >20
BMPR2 gene defect
primary pulm htn
pulm HTN auscultation
accenuated S2.
definitive dx in pulm HTN
right heart cath is gold standard
labs: polycythemia with increased hematocrit
pulm HTN
what percentage of PE arise from deep vein in legs
70%
most common sign of a PE
tachypnea
most common abnormal finding in PE
atelectasis
westermark sign
avascular markings distal to the PE
hamptons hump
wedge shaped infiltrate due to PE infarction
EKG: nonspecific ST/T changes and sinus tachycardia
PE
S1Q3T3
most specific for PE
wide deep S wave in lead 1
isolated q and t wave inversion in lead 3
abg in PE
initally respiratory alkalosis and hypoxemia.
respiratory acidosis occurs with more time
d dimer and PE
only helpful if negative and low suspicion for PE
best initial test for PE
gold standard
helical(spiral) CT angiography
pulm angiography gold standard
PE tx if hemodynamically unstable
thromobolytic tx: LMWH
PE tx if hemodynamically stable
IV unfractionated heparin 3 months or LMWH
antidote for LMWH
protamine sulfate
PTT for what
monitor unfractionated heparin
avoid LMWH in who
renal failure,thombocytopenia
major complication with unfractionated heparin
heparin induced thombocytopenia
ARDs and high mortality rate why
acute hypoxemic respiratory and organ failure
hypoxemia without hypercarbia
ARDs
what kinds of pts at risk for ARDs
gram neg sepsis most common. critically ill pts
CXR: bilateral diffuse pulm infiltrates, spares costophrenic angles
similar to what?
ARDs
CHF does not spare the angles
PCWP < 18 and > 18
< 18 is ARDs
>18 is cardio pulm edema
tx of ARDs
CPAP, PEEP, and low tidal volume
sleep apnea sleep study positive with what
lab
15 or more events/hour
polycythemia(due to chronic hypoxemia)
cheyne stokes
cyclic breathing in response to hypercapnia leading to decreased brain blood flow/ increase then decrease in respirations
biots breathing
irregular respirations with irregular periods of apnea: due to damage of medulla oblongata or opioid use
kussmaul respiration
hyperpnea; deep, rapid, continuous respirations due to metabolic acidosis.
CXR: bilateral diffuse reticular(ground glass) opacities and air bronchogram
neonatal respiratory distress syndrome
neonatal respiratory distress syndrome tx
exogenous surfactant via endotracheal tube to open alveoli, continuous CPAP
CXR: coarse, irregular infiltrates with lung hyperinflation
meconium aspiration
signs of respiratory distress after birth(post term), cyanosis, tachypnea
meconium aspiration