Pulmonary Flashcards

1
Q

normal vs restrictive vs obstructive values for pulmonary function tests: FVC

A

normal FVC: 5 L
restrictive: lower
obstructive: normal or lower

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2
Q

normal vs restrictive vs obstructive values for pulmonary function tests: FEV1

A

normal: 3.75 L
restrictive: lower
obstructive: much lower

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3
Q
A
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3
Q

normal vs restrictive vs obstructive values for pulmonary function tests: FEV1/FVC

A

normal: 70-75%
restrictive: higher
obstructive: lower

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4
Q

which blood has a higher hemoglobin saturation and thus higher Po2; venous or arterial blood?

A

arterial

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5
Q

explain the following lung imaging finding:

border between same density organ is lost

A

silhouette sign; usually caused by a pneumonia

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6
Q

explain the following lung imaging finding:

dark markings on abnormal white lung

A

alveoli are fluid filled; air in bronchi visible on xray

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7
Q

at what cardiac size is imaging positive for enlarged cardiac silhouette?

A

if the size of the heart is greater than half the width of the chest

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8
Q

explain the following lung imaging finding:

fundus of stomach appears as a fluid density or air fluid level behind the heart

A

hiatal hernia

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9
Q

explain the following lung imaging finding:

jagged edges at the lateral aspect of the image

A

rib fracture; watch for pneumothorax

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10
Q

explain the following lung imaging finding:

“fluffy” multiple white lines

A

diffuse interstitial pneumonia

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11
Q

explain the following lung imaging finding:

blunt costophrenic angles

A

pleural effusion

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12
Q

causes of lungs appearing too white on xray

A

pneumonia
TB
atelectasis
lung cavity, nodule, or mass
pleural effusion
congestive hearrt failure
chronic interstitial disease (confined to a particular area)

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13
Q

more common causes of diffuse interstitial pneumonia

A

viral agents or mycoplasma

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14
Q

primary and secondary TB infection lung findings

A

primary infxn seen in upper lobes with pleural effusion and hilar lymph node enlargement

secondary infxn xray is normal or shows small calcifications in lungs and lymph nodes

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15
Q

causes of lungs to appear too black on xray

A

pneumothroax (air b/w pleura rising to highest point in chest; black w dec number of vessels)

PE (blood supply to lungs cut off)

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16
Q

____ collects at the highest point in the chest, as opposed to ____ which collects at the lowest point

A

air = highest
fluid = lowest

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17
Q

image of choice for lung / chest masses

A

CT to avoid motion artifact from breathing

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18
Q

NON sedating H1 receptor antagonists names and doses

A

fexofenadine (allegra): 30, 60, 180 mg
loratadine (claritin) : 5-10 mg
certirizine (zyrtec): 5 and 10 mg

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19
Q

NON sedating H1 antagonist AE and CI

A

loratadine & fexofenadine:
CI with use of erythromycin, ketoconazole, or itraconazole due to fatal arrythmias
avoid in severe renal impairment
no grapefruit/OJ/apple for 4 hours

certirizine:
avoid alcohol, sedative, tranquilizers > CNS depression

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20
Q

diphenhydramine medication class and uses

A

sedating h1 receptor antagonists
used for allergic rxns from type 1 allergies and insomnia

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21
Q

diphenhydramine AE and CI

A

AE: seizures, sedation, n/v, dry mouth, epigastric distress, thrombocytopenia, agranulocytosis

CI with CNS depressants and MAO inhibitors

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22
Q

diphenhydramine dosage

A

12.5, 25, 50 mg

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23
Q

epinephrine MOA and uses

A

anaphylactic shock; vasodilation of B2 receptors (and vasoconstriction a1)

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24
Q

epinephrine AE

A

cerebral hemorrhage, CVA, HTN, tachycardia, v fib, shock, n/v, HA, drowsiness

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25
Q

oxymetazoline MOA and uses

A

nasal spray or eye drop; a1 receptor stimulant; vasoconstriction

used for congestion

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26
Q

oxymetazoline AE/CI

A

arrythmia, anaphylaxis, asthmatic episodes, HA

do not use with MAO inhibitors or severe HTN

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27
Q

albuterol MOA and uses

A

short acting b2 adrenergic agonists that causes bronchodilation; acute ashtma; acts in <15 mins, lasts 3-4 hours

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28
Q

medications for short term asthma management

A

short acting beta agonists
anticholinergics
systemic corticosteroids
magnesium sulfate (IV) - emergency

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29
Q

long term asthma control medications

A

inhaled corticosteroids
long acting beta agonists
leukotriene modifiers
mast cell stabilizers
biologics (immune; for severe asthma)

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30
Q

albuterol AE /CI

A

nervousness, tremor, tachycardia, HA, palpitations, n/v, bronchospasm

avoid use with CNS stimulants

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31
Q

ipratropium med class and uses

A

anticholinergic bronchodilator (parasympathoLYTIC); asthma/COPD bronchospasm relief in combo with SABAs; esp in emergency settings

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32
Q

fluticasone/budesonide med type, asthma use, dosage

A

inhaled corticosteroids; dec inflammation in airways
used daily

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33
Q

salmeterol med type, asthma use, dosage

A

long acting beta 2 agonist; used with ICS for long term control, not for acute sx

1-2 inhalations daily; 1.5 hours before exercise for exercise induced

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34
Q

montelukast med type, asthma use, dosage

A

leukotriene modifier, dec inflammation/bronchoconstriction, taken daily PO

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35
Q

cromolyn med type, asthma use, dosage

A

mast cell stabilizer, prevents degranulation of inflammatory mediators from mast cells

usually inhaled/nasal/opti - dosed frequently

prophylaxis only

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36
Q

guaifenesin med class, MOA, uses

A

mucolytic; decreases viscosity of secretions, expectorant (does NOT suppress cough)

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37
Q

acetylcysteine med class, MOA, uses

A

reduces viscocity of respiratory tract fluid; mucolytic at high doses

used for pneumonia, bronchitis, TB, CF, emphysema, etc

antidote for acetominophen overdose

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38
Q

acetylcysteine SE/cautions

A

rhinorrhea, stomatitis, n/v, bronchospasm

activated charcoal dec effectiveness

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39
Q

glucocorticoid AE/caution

A

water retention and CV problems

long term: osteoporosis, peptic ulcer

inhaled steroids less systemically absorbed

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40
Q

steroid drug suffixes

A

-sone
-zone
-onide

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41
Q

cromolyn AE/caution

A

throat irritation
do not use during acute asthma attacks

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42
Q

ipratropium bromide AE/CI

A

arrythmias
not for single use in acute attack bc no sympathetic activity

43
Q

rescue/acute inhalers versus maintenance inhalers

A

rescue/acute:
- sympathomimetics only: epinephrine, albuterol, metoproterenol

maintenance inhalers:
- steroids, advair, intal, atrovent

44
Q

black box warning for long acting beta 2 agonists

A

inc risk of asthma related death; works very well at managing sx, not treating cause of asthma so person is just as asthmatic - sudden rebound attack when meds leave system (usually happening with missed doses)

ex of med: salmeterol

45
Q

a-adrenergic agonists names and MOA/uses

A

psuedoephedrine (sudafed) -
phenylephrine (sudafed PE) - less eff/AEs

decongestants; stimulates a1 receptors > vasoconstriction

46
Q

phenylephrine AE/CI

A

arrythmia, anaphylaxis, asthmatic episodes, HA

DO NOT USE W MAO INHIBITORS or severe HTN

47
Q

pseudoephedrine HCl AE/CI

A

anxiety, nervousness, palpitatinos, HA, insomnia

DO NOT USE WITH MAO INHIBITORS

48
Q

a-adrenergic agonists (pheynephrine, psuedoephedrine) AE

A

exacerbation HF, pulmonary HTN, renal toxicity, visceral ischemia

49
Q

antitussives

A

opiates: codine/hydrocodone; dec central respiratory drive

dextromethorphan (robitussin): cough suppressant, acute coughs/flu

benzonatate: non narcotic, local anesthetic, acute/coughs/flu

50
Q

benzonatate (tesselon pearles) AE/CI

A

ester or PABA allergy, use with other anesthetics

51
Q

cough duration classifications

A

acute: 0-3 weeks
subacute: 3-8 weeks
chronic: >8 weeks

52
Q

acute cough algorithm

A

life threatening (pneumonia, severe asthma/COPD exacerbation, PE, HF)

non life threatening:
- infections (URI, LRI)
- exacerbations (asthma, bronchiectasis, UACS/post nasal drip, COPD)
- environmental/occupational

53
Q

subacute cough algorithm

A
  • postinfectious (pneumonia, pertussis, bronchitis, new onset/exacerbation UACS, ashtma, GERD, bronchitis)
  • non-post infectious: chronic cough workup
54
Q

chronic cough algorithm

A

chest xray if hasn’t been done!

ACEis, smoking, cancer, UACS, GERD, asthma

55
Q

ashtma signs/sx

A

wheezing, dyspnea, cough, nocturnal sx
bilateral wheezing, hyperresonance to percussion, PFTs normal/abnormal

56
Q

conditions that can mimic asthma

A

CHF
PE
GERD
foreign body aspiration
upper airway obstruction > stridor (tumors, tracheal stenosis)

57
Q

how do NSAIDs cause asthma exacerbation?

A

NSAIDS only block COX pathway, so all arachadonate goes through lipoxygenase pathway > leukotrienes

58
Q

exercise induced asthma usually occurs when during exercise?

A

5-10 mins after starting

59
Q

what drugs can induce/exacerbate asthma?

A

ASA
NSAIDs
beta blockers
histamine

60
Q

asthma four step classification

A

(higher step = more chance of death = more medication)

1: mild intermittent (<2/week) - short acting rescue inhaler
2: mild persistent (>2/week, <1/day)
3: moderate persistent (daily)
4: severe persistent (constant)

61
Q

pneumothorax vs

A

pneumothorax: lung being collapsed by area, trachea deviates AWAY from lesion

atelectasis: lung losing body and collapsing in on itself; trachea deviates TOWARD lesion

62
Q

types of pleural effusion

A

transudate (CHF; starling forces)
exudate (infectious; immune proteins)
empyema (walled off infxn)
hemorrhagic (PE)
chyliform (lymph fluid)

63
Q

pleural effusion vs pneumothorax lung sounds

A

pneumo: dec lung sounds
pleual effusion: inc breath sounds

64
Q

bronchiolitis

A

dangerous in infants and elderly; usually viral in nature
xray shows hyperinflation and peribronchial infiltrates

65
Q

acute bronchitis common causes

A

acute inflammation trachea/bronchi usually due to: influenza, RSV, coxsackie, adenovirus, rhinovirus

often follows or is associated with acute sinusitis or pharyngitis

bacteria less common: strep pneumo, h flu, morazella catarrhalis

66
Q

consolidated/lobar pneumonia etiology

A

strep pneumo, h flu, gram neg bacteria, moraxella catarrhalis, staph aureus

klebsiella pneumo in chronic alcoholics, e coli in diabetics

67
Q

atypical/”walking” pneumonia etiology

A

mycoplasma, chlamydia pneumoniae
viral pneumonias

68
Q

what lung pathology should be considered in ddx of altered mental status in the elderly?

A

pneumonia; elderly pts often have fewer/less severe sx or atypical presentations

69
Q

most common causes of hospital acquired pneumonia

A

gram negative bacilli

70
Q

lung abscess etiology, signs/sx

A

mostly bacterial;

50% due to aspiration of bacteria when pt is recumbant (coma, anesthesia, substance use, stroke), or those with problems swallowing or coughing

sx: fever, chills, pain, weakness, wt loss, foul/musty smelling sputum mixed w blood (rusty sputum)

71
Q

TB patho

A

acid-fast intracellular parasitic mycobacteria

usually starting in upper lobes; primary infxn becomes walled off, lesions shrink and heal, leaving behind caseating granulomas

72
Q

testing/dx TB

A

tuberculin skin test; bacteriologic culture is dx
airborne transmission
often asx
reactivation = upper lobe infiltrates on CXR

73
Q

aspergillosis transmission, dx

A

fungal infection caused by soul pathogens; airborne transmission (construction)

XR: solitary lesions, round intracavitary mass

74
Q

cryptococcal pneumonia transmission, dx

A

encapsulated yeast in pigeon droppings; portal of entry in lung but often causes meningitis

asx, XR shows large solitary nodule, pneumonitis

dx biopsy and culture; LP to r/o meningitis

75
Q

cryptococcal pneumonia tx

A

amphotericin B

76
Q

histoplasmosis dx/transmission

A

most common US mycosis; midwest/south central US

asx or atypical pnuemonia; patchy ilfiltrates on XR with hilar/medistinal adenopathy, flu like sx

XR: apical lung lesions, cavitation, fibrosis

dx: sputum culture/biopsy

77
Q

coccidiomycosis/valley fever etiology

A

infectious fungal lung; arthospores become airborne from fungal mycelia in soil

common in deserts after rainstorms

78
Q

coccidiomycosis/valley fever signs/sx/dx

A

incubation up to 28 days: fever, malaise, dry cough, chest pain, night sweats, anorexia

NO hemoptysis

fine macular, urticarial rash, erythema nodosum (good prognosis)

tx: antifungal

79
Q

first two ddx to consider with hemoptysis

A

TB
lung cancer

80
Q

general description of chronic obstructive lung disease

A

airflow limitation from obstruction that is not fully reversible; lungs fill with air behind obstruction and become over inflated. difficult to breathe overcoming that resistance

lung tissue destroyed from chronic infection

81
Q

interstitial (restrictive) lung dz general description

A

infiltration of inflammation and scarring of lung parenchyma > wide spread lung fibrosis > inc elastic recoil, dec compliance

lung is smaller in volume, patient has to work harder to breath against decreased compliance (lungs more like rubber)

82
Q

two major lower respiratory diseases/COPD dx

A

emphysema “pink puffers” - normal pCO2 due to reactive polycythemia adjusting to new normal

chronic bronchitis “blue bloaters” - increased pCO2 bc episodic

83
Q

why would you give a bronchitis patient antibiotics if acute bronchitis is usually viral?

A

if they have an acute exacerbation with chronic bronchitis it is likely bacterial superinfection

84
Q

acute onset of dyspnea or hypoxemia with normal chest XR first ddx

A

PE until proven otherwise

85
Q

PE dx and tx

A

V/Q scan, CT angio
anticoagulation, preventing recurrence

86
Q

cystic fibrosis etiology and patho

A

AR disorder of exocrine glands; in respiratory tract inadquate hydration of tracheobronchial epithelium impairs mucociliary function

dx: >80 adult, >60 kids sweat chloride. pancreatic insufficiency, esp in kids

chronic pseudomonas aeruginosa or staph aureus bronchitis and beconhiectasis with recurrent exacerbation

87
Q

what is bronchiectasis

A

irreversible dilatation of bronchial tree; obtruction can arise from tumor, foreign bodies, impacted mucus, external compression

congenital form rare, cystic fibrosis most common form

88
Q

signs/sx bronchiectasis

A

prurlent sputum, or dry cough
rales and clubbing
recurrent pulmonary infxn
hemoptysis
loss of lung volume and honeycombing and cystic spaces

89
Q

collagen vascular disease etiology/patho

A

common in SLE, scleroderma
2/3 pts with CVD will have clinical pulmonary dz; pleural dz in all CVD except poly/dermatomyosis
pulmonary nodules can occur in RA

90
Q

ddx hemoptysis and hematuria

A

goodpastures

dx IgG deposits in glomeruli and presence of antiglomeruli BM ab in serum

91
Q

silicosis etiologic agent & mechanism of lung injury

A

crystalline silicon dioxide via inhalation; alveoli filled with eosinophilic debris

sandblasting, mining, tunnerling, quarrying, stonecutting, polishing

92
Q

asbestosis etiologic agent & mechanism of lung injury

A

strength/flexiblity/resistance

pulmonary fibrosis with asbestos bodies; pleural collagen plaques, pleural effusion

inc risk bronchogenic carcinoma and mesothelioma

93
Q

most common cause of death due to cancer in the US for men and women

A

bronchogenic carcinoma

94
Q

adenocarcinoma radiologic findings & 5 year survival rate

A

most common
peripheral mass, solitary nodules
27%

95
Q

squamous cell bronchiogenic carcinoma radiologic findings & 5 year survival rate

A

common
hilar mass, atelectasis, post obstructive pn
37%

96
Q

large cell bronchiogenic carcinoma radiologic findings & 5 year survival rate

A

large peripheral mass
27%

97
Q

small cell bronchiogenic carcinoma radiologic findings & 5 year survival rate

A

hilar mass, adenopathy
<1%

98
Q

central vs obstructive apnea

A

central- cessation of air flow, no movemnt of rib cage or abdomen

obstructive - paradoxical motion of rib cage and abdomen without air flow

can also be a mixed type. all typed have fall in O2 sat

99
Q

ARDS etiology/path

A

life threatening condition in which inflammation in the lungs and accumulation of fluid in the air sacs (alveoli) leads to low blood oxygen levels

common causes: pneumonia, septic shock, trauma, aspiration of vomit, chemical inhalation

100
Q

ARDS signs/sx

A

SOB
labored, rapid breathing
low BP/shock
so sick theyre unable to complain of sx

101
Q

acute pulmonary edema is usually associated with what pathology?

A

usually associated with CHF; may appear suddenly with chronic heart failure or be first manifestation of cardiac dz

102
Q

acute pulmonary edema signs/sx

A

severe dyspnea, worse with lying supine
productive frothy pink sputum
diaphoresis
tachycardia
cyanosis
wheezing
rales
CXR: blurred vascular outline, inc heart size and interstitial markings

103
Q

cheyne stokes respiration is often seen when?

A

advanced CHF and neuro dz
alternating tachypnea and apnea

104
Q
A